1. The famine turned the normal modulation of climate into disaster.

2. You will find that the modulation is approximately correct when the flashing can only just be seen over the steady glow.

3. Modulation of transcription by tethered complexes Several major points are evident in comparison of the tethered complexes with the simple platinum compounds.

4. Amplitude modulation ( AM ): The form of modulation.

5. The input signal is pulse modulation.

6. I retrofitted our ommunications to an amplitude modulation.

7. The second is amplitude modulation dot notation.

8. Complementary code keying (CCK) is a nonlinear coded modulation.

9. The soft modulation of her voice soothed the infant.

10. Our fifth concern is with modulation noise.

11. This paper describes a demonstration system of A modulation code optical fiber communication and the basic principles of A modulation. Some demonstration results are also given.

12. In this paper, a reflective intensity modulation optical fiber sensor with simple structure and easy design has been introduced.

12. try its best to gather and build good sentences.

13. The full digital modulation system has high reliability and stability. The practice indicates that the economic and social benefits are gained after reconstruction.

14. Automatic modulation mode recognition of communication signals has found wide application areas, and it is very important for a military software radio interception receiver.

15. Conclusions Environmental modulation of gene expression and pathogenesis inY. pestis, especially the island.

16. Neuronal circuitry for centrifugal modulation in visual information processing. Visual information is transmitted and processed from the retina to the telencephalon where visual perception results.

17. The application of MPPM(Multi-Pulse Position Modulation)in optical wireless communication was studied in this paper, and a new modulation technique described as Improved MPPM(IMPPM)was presented.

18. Gain spectra of the modulation instability as function of birefringence and polarized angel has been given.

19. It has the emphatic clarity of black-figure incision but is capable of much more subtle modulation.

20. They are not found in other contexts except in passing modulation.

21. The demonstration of a central stimulation of alkaline bile flow suggests that bile secretion may be subject to central modulation.

22. Radio used for communication uses a constant frequency carrier with some kind of amplitude modulation.

23. Influence of misalignment between SMF and FMF on depth of modulation(DM)was calculated.

24. With the balanced TE and TM modes, the measured results show that the TE-TM phase-difference modulator of the CPM can be used to realize good optical circular-polarization modulation.

25. The results suggested that VPL may be involved in the modulation of pain sensation by simultaneous electric activities of PEN and PIN in VPL.

26. Objective To study the relationship between the morphologic mechanism of human embryonic epidermic cells and mesenchymal-epithelial transformation (MET) and its modulation factor.

27. The setting is introduced on the relationship between primary frequency modulation speed difference and primary frequency modulation load for current modulated type steam turbines with base-load.

28. This paper develops a voice compress algorithm - SB - ADPCM ( Sub Band - adaptive Differential Pulse Code Modulation ).

29. Part 2 puts forward the circuits of pulse and IF carrier generation and square pulse amplitude modulation and demodulation.

30. Compared with the original circuit, the new system increases the phase modulation depth as predicted, and intensity modulation can be controlled to some extent.

31. This paper discusses the results of system simulation of linear frequency modulation pulse-compression radar and draws some conclusion on its capability of counter-jamming.

32. In the scheme, FSK-FDM technique is used in subcarrier modulation, and the EDFA's supervisory information is transmitted by optical intensity modulation.

33. The bulk potential modulator can realize real-time modulation to parameters of the target MOS device, thus greatly weakening the influence of technological deviation.

34. The phenomenon that the effect of the high frequency modulation is better than that of the low frequency modulation is explained, and general rules of choosing modulator parameters are also presented.

35. High - speed digital modulation is one of the key technologies in communication system.

36. The frequency conversion velocity modulation technique is widely applied in various industries with large economic benefit, especially in pumps system control.

37. Modulation Domain and Pulse Analyzer(MDPA) analyzes signal using a plane domain which is consisted of frequency and time.

38. An all - optical light modulation scheme based on improved prism - waveguide coupling method is developed.

39. The study object of this article is double electro motor frequency conversion velocity modulation system.

40. A new Space Vector Pulse Width Modulation ( SVPWM ) method based on control factor is proposed.

41. Siemens PLC S7-200 as the control center, Anchuan F7 frequency converter as the implementation devices, it realizes changing frequency velocity modulation control for automatic washing machine.

42. The sample time - staggered space vector modulation ( STS - SVM ) is a novel modulation strategy with high performance.

42. is a sentence dictionary, on which you can find nice sentences for a large number of words.

43. In a flat fading channel, system can maximize the average output and lower the BER by adjusting the coding scheme, modulation index and transmission power accordingly with the changes of channel.

44. The errors are classified according to their frequency. The amplitude and phase errors of the LFM signal generators using quadrature modulation technology are mapped into baseband.

45. The notation of Muller matrix is one of the three polarized modulation technologies and the powerful design, analysis mathematics tool of polarization modulation system.

46. This evidence suggests that ASM undergoes marked phenotypic modulation in a disease status such as asthma.

47. Based on the idea of the Schmidt orthogonalization and the orthogonal chaotic carriers being generated,() a chaos-based quadrature modulation communication system is proposed and realized.

48. The Organization Committee will appoint special fair arrangement personnel for coordination in arrangement and removal of exhibitors and site light modulation service.

49. Multilevel laser power modulation is a key technology in multilevel optical data storage systems based on photochromism.

50. In this paper, an adaptive modulation system controlled by changing the symbol rate and modulation level is proposed.

51. A novel modulation strategy - duty - cycle space vector modulation strategy is introduced?

52. On the other hand, the use of pulse width modulation (PWM) inverter for BLDCM leads to a high increase of core loss.

53. Then, the sinusoidal pulse-width modulation (SPWM), the space vector pulse-width modulation (SVPWM) and the whole IM drive systems are realized respectively.

54. The general-purpose modulation arithmetic based on software radio, symbol mapping and the realization of pulse shaping filter are discussed.

55. The maximum on-time is kept as a constant and a bias current of the oscillator in the PWM controller is moderated to achieve the off-time modulation.

56. The transmitter path includes a digital modulation circuit receiving multiple channel binary data, and for each channel generating a digital representation of the data.

57. Among which, and are constants. In the BPSK modulation mode, the marine atmosphere channel is defined as.

58. The causes of the phenomena are explored by studying the characteristics of audio frequency power amplifier and the pulse modulation of the high-frequency switch power supply.

59. The basic theory and advantages of filtered multitone modulation (FMT) are studied. An efficient implementation of FMT based on linear-phase FIR filter is proposed and its complexity is discussed.

60. The results show that different from that of pulse amplitude modulation (PAM), the cross-correlation function of PPM cannot be directly used to acquire timing due to the nonlinearity of PPM.

61. To solve this problem, BICM, which combines the bit interleaver and the coded modulation technology, is proposed. The results show that BICM can obtain more gain in Rayleigh channel.

62. The system consists of two modules: gating pulse module and high voltage modulation module.

63. Secondly, a current for it is developed, which consists of a bridge zero modulation current, signal amplifier and analog filter.

64. You need to remember is that pictures are digital modulation method is good.

65. Results show that the lower guide mode acting as the modulation channel is, the larger modulation index can be obtained.

66. Introduces an automatic sped modulation system for welding turner, which is used in the automatic . welding of spiral plane welds.

67. CVSD ( Continuous Variable Slope Delta Modulation ) voice coding enables operation at high bit - error rates.

68. To increase the effectively transmitted bandwidth, digital multiplex channel Weaver complex modulation is employed to implement SSB modulation.

69. Familiar with digital modulation, coding, filtering and anti - collision.

70. Simulation results demonstrate: the chaotic modulation signals generated from the four kinds of chaotic sources can all reduce the peak level of the input current and the output voltage spectrums.

71. In this paper, base-band signal is returned by 2DPSK modulation signal. The algorithms of receiving and sending carrier frequency synchronization in digital communication receiver are suggested.

72. The requirements for modulation techniques to digital mobile communication system are presented and the improved lineally digital modulation schemes are also briefly described.

72. is a online sentence dictionary, on which you can find good sentences for a large number of words.

73. The Configuration and activity theoretical of the placet frequency modulation glary instrument are introduced in this paper.

74. This device can be applied as a modulator or chopper in optical fiber signal transmission system and has a good prospect for its high modulation ratio and low price.

75. Frequency modulation(FM): the form of modulation in which the frequency of the carrier is varied in accordance with the instantaneous value of the modulating signal.

76. The COFDM modulation part is made up of blocks partition, COFDM symbol forming, DQPSK symbol mapping, frequency interleaving, difference modulation and COFDM modulation and so on.

77. The radar altimeter mounted on high speed vehicle demonstrateswideband doppler modulation characteristic.

78. In order to reject the zero sequence and negative sequence disturbance due to unbalanced load, a solution using two-stage four-leg matrix converter based on carrier modulation strategy was proposed.

79. A simulation method of digital modulation schemes for satellite communications with adjacent channel interference is described and then a method for an efficient simulator is presented.

80. The practices of primary frequency modulation, OPC and FCB in Baosteel Power Plant were reviewed to explain the function of plant control in alleviating system failure.

81. In pulse modulation identification is one of radar reconnaissance key technology. Especially, in pulse modulation identification under low SNR is a hot point of recent researching.

82. LFMCW (Linear Frequency Modulation Continuous Wave) Radar is a radar system which can get the information of range and velocity through modulating the frequency of continuous wave.

83. This paper introduces the pulse wide modulation(PWM) based on minimum root-mean-square value of harmonic current of inverter.

84. While there are different communication systems in different communication services, such as modulation mode and band and transmitting rate and MAC and so on.

85. Image form a variety of modulation algorithm to display the actual results.

86. The results indicate that the natural extracellular matrixes such as collagen (COL), hyaluronic acid (HYA) and phosphoserine (PS) play important roles in the modulation of mineralization.

87. Meanwhile, modulation schemes for deep space communication are provided based on channel features and requirements on data transmission rates.

88. The measurement of telemetry modulation index is discussed, and a new method using 2nd order sideband is proposed to improve measurement results.

89. In this paper, a three-dimensional space vector modulation(3DSVM) algorithm principle is presented and the principle is applied to DSTATCOM in three-phase four-wire system.

90. Objective To study the effect of oxytocin(OT)on pain modulation in spinal cord and its relation to endogenous met-enkephalin and dynorphin A_(1-13).

91. Firstly, this thesis introduces correlative information, such as radar theory, modulation, matching filter, ambiguity function, in the domain of processing of radar signals.

92. In this paper, the compression and coding of video signal are achieved by the hybrid coding method of adaptive differential pulse code modulation(ADPCM) addition entory coding.

93. This article makes an experimental study of gas-phase turbulence modulation by particles with different material density in small particle Reynolds number range.

94. It analyzes the improved LCL phase, shifting modulation resonance power source by use of control system theory and deduces the transfer functions in different levels.

95. As a Doppler-free attosecond ultrafast coherent modulation process, ASPB can be intrinsically extended to any two dipolar forbidden energy-level systems.

96. OFDM is a type of modulation is called orthogonal frequency division multiplexing.

97. The emission spectra were obtained by using the concentration modulation spectroscopic technique.

98. The YB7841 blaster is equipped with TD-2 type of charger that uses switch power with pulse-width modulation, which has complex circuit and is more difficulty to be maintenance.

99. pulse-width modulation ( PWM ) technique is widely applied in many fields.

100. Measurement results validate the multi-mode modulation function and high pulse resolution.

101. The temporal coherence of diode laser was studied by using linear frequency modulation technique with simple, experimental apparatus.

102. Nonlinear frequency modulation (NLFM) whose modulation wave is the square of a saw wave is introduced into the fuze detection system.

103. The results show that, in case of high-order dispersion, the positive and negative quintic nonlinearity also intensifies and weakens the cross-phase modulation instability,[] respectively.

104. There exists an optimal transfer function for the feedback loop which can optimize the performance of intensity modulation.

105. The variable voltage and frequency of three-phase power source based on voltage space vector pulse-width modulation drives induction motor.

106. C - Realize the single chip pulse width modulation process to achieve!

107. Several PWM techniques, such as sinusoidal waveform pulse width modulation, quasi sinusoidal waveform pulse width modulation and cell pulse width modulation, are given.

108. The stability of micro - birefringence optical path difference measuring system based on electro - optic modulation method is studied.

109. Doping of Au atoms in CNTs shifts the Fermi band downwards, thus reduces the height of the barrier height, resulting in a modulation in nanotube's the transport property of the nanotubes.

110. It also includes, Hall element inputs, a sequencer for commutation control, fixed off time pulse width modulation (PWM) current control and locked rotor protection.

111. Digital mod technology in the digital communication occupies a very important position, commonly used digital modulation are: frequency shift keying (FSK) and phase-shift keying (PSK), and so on.

112. The single phase H-bridge inverter can generate common-mode voltage due to the sine pulse width modulation(SPWM)and vector controller.

113. The performance of time hopping pulse position modulation (TH-PPM) UWB system using this wavelet monocycle was studied under additive white Gaussian noise (AWGN) channel.

114. Multi-level Quadrature Amplitude Modulation is very sensitive to carrier phase noise.

115. The paper discusses and probes into the application of adaptive control in mine hoist direct-current velocity modulation system.

116. To validate the theoretical analysis, a test system for group velocity delay was set up based on RF modulation.

117. At the same time, based on conventional modulation strategies-multi-carrier SPWM applied on multilevel inverter, hybrid modulation strategies are introduced corresponding to hybrid structure.

118. Sweet strawberries, cheese sauce, cream fillings, brandy wine, by the modulation of this peculiar combination of fillings, fragrant and delicate taste, romantic strawberry and chocolate dessert...

119. Direct evidence of astrocytic modulation in the development of rewarding effects induced by drugs of abuse.

120. Modulation Domain and Pulse Analyzer (MDPA) is a powerful instrument for modulation domain analysis, also it is a useful tool for time interval measurement.

121. By using the time variant modulation ratio method, the harmonics can be eliminated and a sinusoidal and balanced output voltage or input current is obtained.

122. Combined with the jamming modulation technology, the classification, basic configuration and operation principle are introduced from the view of the application of electronic jamming.

123. Based on the mathematic model of separately excited DC motor, the control structure of the single- feedback-closed-loop controlled DC velocity modulation system was obtained.

124. The principle of measuring the light velocity with the method of wave modulation by ultrasonic diffraction crystal grating is analysed, and the experiment method is introduced.

125. Each symbol is encoded by the phase shift relative to the last symbol (the Differential part of the modulation scheme).

126. The frequency modulation effects of positive (negative) dipole or unipole forcing source on LFO in the mid-high latitudes are difference.

127. The form of chaotic attractor as well as the performance of phase space location modulation are analysed. The system model and implementation is also described.

128. The process of retrieving intelligence ( data ) from a modulated carrier wave; the reverse of modulation.

129. According to the peculiar capacity modulation mode of digital scroll compressor, the response discipline of condenser's mass flow rate was translated to an external input signal.

130. Gives an analysis on the non linearity in frequency modulation when a varactor modulates directly in a FM ranging fuze, and shows its influence on the precision of ranging.

131. It is feasible that to use CCD device and image processing system in measurement of the modulation transfer function (MTF) of X-ray film and luminescent screen.

132. The transmitting and receiving unit (5) converts the transmission analog baseband signal into a transmission modulation wave signal to output to the network.

132. is a online sentence dictionary, on which you can find excellent sentences for a large number of words.

133. Wave distortions in the intensity modulation on different bias conditions have been analyzed.

134. Automatic modulation recognition and modulation parameters estimation are key problems in non - cooperative communication Software Defined Radio.

135. A novel topologic structure of high frequency AC pulse density modulation converter is proposed, and its operation principle, control scheme and design are described in detail.

136. In this dissertation the pulse compression performances of linear frequency modulation signals (LFM) and the algorithm of MTI/MTD are analyzed.

137. The method comes from the mechanism of reciprocal shift modulation, which transforms the measuring of eigenfrequency into measuring the spike pulse responding to ineffective-modulation optic power.

138. Radar waveforms that can using pulse compression technology are linear frequency modulation, nonlinear frequency modulation, phase coded pulse.

139. Due to additive relative motion between ground jamming emitters and SAR, the spurious phase modulation of transmission signal is produced.

140. Both SPWM andSVPWM adopt three modulating methods: synchronous modulation, asynchronousmodulation and hybrid modulation.

141. For high-speed and low-drive -power light, modulation, the advantages of the use of asymmetric strip line was shown.

142. But SC-FDE cannot finish adaptive modulation utilizing CSI directly like OFDM due to it has to make symbol mapping and detecting in time domain.

143. The system uses vector control theory to co operate the gasoline engine generator set and battery inverter set by means of soft switching pulse density modulation(PDM) converters.

144. Optical heterodyne Zeeman modulation magnetic rotation spectroscopy ( OHZM MRS ) is a high sensitive spectroscopy technique.

145. System performances using the two different pulse amplitude modulation schemes (BPSK and OOK) is compared.

146. Successive approximation method is directed to solve the peak modulation problems.

147. For a loss modulation where the threshold carrier density may change, the neglected term may become comparable to the retained first order small quantity.

148. The brain RAS has been found to be involved in the modulation of cardiovascular and fluid-electrolyte homeostasis, generally complementing the classical roles of the endocrine RAS.

149. A space vector pulse-width modulation(SVPWM)strategy was developed to avoid the failure of dead - time compensation near the zero - current point .

150. In screening technology asas color image in differenc dot have amplitude modulation and FM screening.

151. In pulse code modulation, a basic group of channels assembled by time division multiplexing.

152. The one-piece forged brake caliper body houses two opposed pistons, with a choice of high-power metallic pads or resin pads offering finer modulation.

153. Depending on the synthesizer it is used with, a wide range of effects such as dynamics, pitch bending, modulation, portamento, attack and decay times, can be controlled.

154. The forming of signals, such as those employed in telegraph transmission, by the interruption of a direct current or modulation of a carrier between discrete values of some characteristics.

155. Through simulation on velocity modulation system of water wheel generator, indicated control effect of this control mode surpassed the conventional PID control.

156. The two-frequency serrodyne modulation technique can be used in the digital R-FOG system.

157. In chapter 5 the jamming such as phase modulation noise, binary pseudo random sequence and multiple pseudo targets are discussed.

158. With SM-28 single mode fiber as the leading fibers, depth of modulation (DM) and coupling efficiency (CE) are calculated with relation to core radius and refractive index of core and inner cladding.

159. Reduction of Conducted EMI in switching power supplies using chaotic frequency modulation scheme ( CFMS ) is proposed.

160. Simulates nonlinear effect in optical fiber called Cross Phase Modulation for symmetric regime has been tested.

161. This paper presents an introduction to the network structure, transmission method, frequency spectrum distribution scheme, modulation and multiaddress connection technology concerning HFC.

162. Simulation results show that performance of ARQ system based on AM is better than that of fixed modulation system.

163. A range of options and techniques to induce pressure modulation, velocity modulation or a combination of both, so that uniform drop sequences are obtained,[http:///modulation.html] are known to those skilled in the art.

164. The laser pulse modulation system consists of cavity dumper driver, matching net and acoustooptic energy convertor.

165. The company mainly researches and develops, the production, the sales industry intellectualization actuation velocity modulation system product.

166. TACAN beacon transmits pulse amplitude modulation signals in all direction, including bearing and distance information relative to the beacon.

167. The modulation is driven by the bias current below the threshold.

168. By means of computer simulation, Lissajou figure of the rectangular wave magneto-optical modulation method was investigated, and the principle and precision of this method were studied.

169. The detection theory of resonator fiber optic gyro(R-FOG) based on the serrodyne modulation with two frequencies was introduced, and the correlative detection theory in digital system was analyzed.

170. The 4D means four data symbols (two bits), the PAM5 is Pulse Amplitude Modulation with five signal levels.

171. However, the modulation - demodulation of ultraviolet and voice transmission are the key technologies.

172. The process of a small diameter - power pump beam propagating in BK 7 glass modulation was simulated.

173. A new scheme (LDPC-DSTM) combining irregular low-density parity-check (LDPC) code with differential space-time modulation (DSTM) is used for coded modulation (CM).

174. Because of the loss resistance of varactor and the isolation of circulator, parasitic amplitude modulation exists in reflectionmicrowave linear phase modulator.

175. This system of modifying the carrier waves is called " Amplitude Modulation, " or " AM ".

176. The soft decode technology of pulse position modulation was proposed.

177. The MTF (Modulation Transfer Function)-based Wiener filter, which is comparatively fast and effective, in frequency domain is adopted to improve the image quality.

178. A transfusion monitor system is designed based on infrared technology with modulation and demodulation.

179. In this dissertation one step pulse modulation method is introduced, which can obtainconduction angle through an on-line operation.

180. Orthognal Frequency Division Multiplexing ( OFDM ) is a multi - carrier digital modulation technique for broad - band wireless communication.

181. This paper presents a differential modulation diversity used in the presence of unknown multi-path.

182. In this dissertation, we studied parameter estimation and modulation identification algorithms of satellite TDMA communication signals.

183. For LFM signal, we demonstrate the method of employing Hamming weighting, spectrum correcting and phase modulation distortion.

184. The sensing error can be improved by sampling instant modulation for DCM DC - DC flyback converters.

185. PWM modulation and IGBT drive circuits determined the quality of welding, controlled the output of driving signal for the IGBT inverter main circuit.

186. To improve the fuze antijamming performance and the distance resolution, presents the main parameters of pseudorandom code source in pseudorandom code modulation fuze.

187. Quadrature Amplitude Modulation(QAM) is used to transfer signals by digital TV system based on DVB_C standard.

188. Pulse modulation may be used to control a bias voltage and an ionization.

189. IGBT combines the features of voltage-control in MOS devices and conductivity modulation in bipolar devices.

190. Pumped-storage plant can take on the tasks of reducing peak and filling valley, emergency reserve, frequency modulation, phase modulation, etc.

191. The article deals with the functions of DC AC series intelligent power inverters, software PWM technology and alternating voltage output modulation technology.

192. According to the frequency modulation function mode, this paper proposes to design the nonlinear frequency modulation(NLFM) signal using the data fitting method.

192. is a sentence dictionary, on which you can find excellent sentences for a large number of words.

193. Position control of d . c . motors has been done by means of pulse width modulation.

194. Objective: To study the antitumor activity and immune modulation of extract from Chlorella pyrenoidosa Chick. (CE).

195. The presence of this functional feedback from the mushroom bodies to the antennal lobes suggests top-down modulation of olfactory information processing in Drosophila.

196. This thesis introduces a series of low cost high precision Linear Frequency Modulation Continuous Wave(LFMCW)ranging radar.

197. The method of complex envelop modulation is employed in generating the target reflecting signal.

198. When the intensity modulation index increases, the optimal frequency modulation index increases.

199. Thus , the present research provides an effective method modulation of primary afferent synaptic transmission.

200. Single sideband amplitude modulation is the major model of the military software radio.

201. Heavy copper rings mounted above and below the T-shaped pole piece reduce non linear and modulation distortion and increase the overload margin.

202. A simple measuring method for effective value of pulse frequency modulation(PFM)is presented against on the needs of designation and analysis of high frequency X-ray generator.

203. For a reflective fiber optic displacement sensor, the influence of fixing error on the intensity modulation characteristics is studied theoretically with a mathematic model.

204. Experimental results indicate that the timing scheme satisfied the requirement of miniaturized three - FOG to modulation - demodulation signal.

205. A novel embedded curvature fiber optic sensor is developed, which base on the light intensity modulation by the variation of structure curvature.

206. CPF effect is the physical basis for chaotic decoding, and it is relative to the modulation frequency.

207. Experiments on electro-optic modulation are usually focused on the application in audio communication based on well defined half-wave voltage.

208. The design theory of PMLSM based on permeance modulation is proposed.

209. The chaotic signal transmitter also includes a modulation controller for controlling the modulation of the chaotic signal according to the quantized transmission signal.

210. The hardware configuration of using DDS chip AD 9956 to realize the linear modulation function is introduced.

211. The soft symbol to bit mapping technique is an effective way to combine the multilevel modulation and binary decoding.

212. The frequency, correlation that outputs relation of n, modulation to wait set condition can store at most 100 group, OK call by need.

213. It uses the 1200 baud Bell 202 tone modulation and the first bit of data is transferred after receiving the first ring tone.

214. A communicator uses BPSK direct - sequence ( DS ) spreading modulation and BPSK data modulation.

215. The triggering angle modulation method of the sine-wave cyclo-converter is carried out, and the operating wave form of the designed system is put forward.

216. Similarly, the introduction of voice encoding techniques using pulse code modulation contributed to the concept's evolution.

217. A new lithology identification method based on axial amplitude modulation signal of drill string is proposed.

218. The phase modulation has some more advantages against CW, which uses ASK ( amplitude shift keying ).

219. This opens the possibility of a new type of cross modulation, where a beam of light at one of the absorption frequencies can turn on or off the light of the other.

220. It is clearly clarified the conceptions of quadrature modulation, quadrature exciting, quadrature receiving, and quadrature demodulation in the MRI system.

221. We also analysed the influence of amplitude modulation and frequency (or phase ) modulation on Interferometer Direction Finder.

222. The core circuit of local oscillator signal part, quadrature modulation part and frequency multiplier and amplifier part is designed and implemented.

222.

223. Through analyzing cutting waves and pulse width modulation, a new method of tracing current is presented.

224. The second, we summarize the optical heterodyning modulation technology, and calculate the spectrum of optical mm-wave signal generated by this modulation technology.

225. An assessment of modulation classifiers for ISI channels [ J ].

226. Two kinds of typical wideband signal, Frequency Modulation (FM) signal and Frequency Spread signal, is analyzed qualitatively with Wideband Ambiguity Function.

227. An analytic expression of the self-phase modulation induced by chirp in non-Kerr-like optical fibers with saturable nonlinearity is derived taking into account the fiber loss.

228. Even if correlation coefficient reaches 0.8 , STBC - AM still outperforms simple adaptive modulation schemes.

229. In order to make a research on the software radio, this thesis focuses on key techniques for radio receiver including: DDC technology, the channelization model, modulation and demodulation algorithm.

230. As an attosecond ultrafast modulation process, SFPB can be extended intrinsically to any sum-frequency of energy-levels.

231. EYS was the key basis of spinning technology determination direction and amplitude modulation.

232. The detection problems of single-component linear frequency modulation (LFM) signal are studied.

233. Model of QPSK modulation code integrity, and can be used directly.

234. CD23 plays a role in the development and progress of B - NHL and that this lymphokine might have great significance (pharmacological modulation ) in the treatment of B - NHL.

235. The simplest way to process power is using pulse width modulation ( PWM ) control of the switch.

236. Sub harmonic SPWM modulation is often used for medium frequency inverters.

237. Therefore, we use unipolar switching pulse width modulation scheme to realize a filterless Class - D power amplifier.

238. The fuzzy control already has obtained the satisfactory effect in the alternating and direct velocity modulation system and the servo system.

239. The performance of time-hopping pulse position modulation (TH-PPM) UWB system using MHP is studied under additive white Gaussian noise(AWGN)channel.

240. Morse code is a very simple example of pulse - code modulation.

241. Finally, the generating scheme of its modulation code is described. The theoretical analysis has shown that the fuze can provide good ant jamming per...

242. In this case the information source provides an electrical signal to a transmitter comprising an electrical stage which drives an optical source to give modulation of the lightwave carrier.

243. A method of phase modulation in which the two significant conditions differ in phase by radians.

244. Endogenous descending inhibitory system plays an important role in the modulation of nociceptive transmission.

245. Therefore, the ration requirement has been made to the sideband spectrum of radiophone signal in frequency modulation in the present standard.

246. It can be shown that, compared to low-oversampling multibit designs, pulse-density modulation converters are much more sensitive to jitter when producing low-frequency audio signals.

247. The traditional methods for identifying beat wave and amplitude modulation wave are shortage. The main disadvantage of these methods is that they can' t correctly identify in some cases.

248. Pointed out the relation of cascade units' number and carrier phase-shifted angle,[http://] and the modulation ratio (M)'s impact on the output voltage.

249. The automatic identification of the modulation types has been applied to many fields such as signal identification, interference identification, radio interception, monitoring, etc.

250. The research contents mainly consist of symbol rate estimation, carrier frequency offset estimation, modulation recognition and blind demodulation.