1. Spread spectrum technique can improve the robustness of watermarking.

2. The frequency diversity spread spectrum multiple access (FD/SSMA) is a new spread spectrum system, which is based on the theory of parallel data transmission.

3. A new chaotic spread spectrum communication system FFH-FMDCSK is presented, which is based on FMDCSK and fast frequency hopping techniques.

4. The spread spectrum codes and the simulation performance of single cell LAS-CDMA (Large Area Synchronized Code Division Multiple Access) system are studied.

5. Spread spectrum was conducted first, and then it was embedded into watermark by means of integer modulo .

6. In spread spectrum communication system, the capability of pseudo-noise (PN) code can impact the performance of the whole system directly.

7. But using spread spectrum communication on power line can attain reliability's demand . "

8. The EMC81057 Clock Oscillator is an advanced spread spectrum modulator with a standard TTL or CMOS compatible output that meets clock requirements of all major CISC, RISC, and DSP processors.

9. Spread spectrum technology competes in the unregulated portion of the radio electromagnetic spectrum.

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10. In a lot of antijamming techniques for direct spread spectrum system (DSSS), the DSSS signal is approximately considered as a stationary process.

11. Spread Spectrum Watermark complete source code can be used directly.

12. Basing on spread spectrum theory , CDMA system need use many orthogonal code to distinguish different channels and users .

13. Deriving from direct sequence spread spectrum, efficient spread spectrum can solve the inconsistency in transmission bandwidth and process gain, and improve the anti-jamming ability of the system.

14. The transmitter unit mainly consisted of differential encoding, spread spectrum and BPSK modulation and so on.

15. It uses ARM and spread spectrum together and gives hardware of pronunciation communication module, extended memory of main control module, spread spectrum treating module, CPLD module and so on.

16. A better method for direct sequence spread spectrum ( DSSS ) receiver to decrease the acquisition time is proposed.

17. Finally, making use of autocorrelation function characteristic of spread spectrum sequence, watermark information was detected. In the detection process, it is not requisite for initial carrier image.

18. By combining error-correcting code with Direct Sequence Spread Spectrum, we can improve not only the system anti-interference capability but also the reliability and security of the system.

19. According to the signal synchronization of LEO's direct sequence spread spectrum (DSSS) communication, a method based on software radio platform was described.

20. Using quasi-stochastic property and ergodic theory of chaos, a kind of new hybrid DS/SFH spread spectrum communication scheme is presented based on VSSsynchronization technique.

21. By using 32 bit Cyclic Code Shift Keying(CCSK) code-word S0 to establish spread spectrum space, the tamed spread spectrum was completed.

22. Contributed to the acquisition and Code tracing for the DS spread spectrum com munication systems, this paper presents the scheme of sliding search self-synchronization for a DS system.

23. Computer simulations show that it is superior to the conventional approaches in most cases and thus is a good approach for narrow-band interference suppression in spread spectrum systems.

24. Pseudo random sequence has broad applications in stream cipher , channel coding, and spread spectrum communication.

25. Division Multiple Access System ( CDMA ) is a Multi - User wireless Communication system depending on spread spectrum code.

26. The main ways of anti - interferences are adaptive array, spread spectrum and processing in frequency domain.

27. Secondly, the coefficients quantization - based image watermarking using spread spectrum communication was discussed.

28. An anti-jamming algorithm for narrow-band interference in direct sequence spread spectrum systems , which is based on the adaptive IIR notch filtering is introduced.

29. This paper introduces an AFC algorithm for a zero - intermediate frequency direct - sequence spread spectrum digital receiver ...

30. Time-frequency analysis method is an effective method of identifying the narrow-band interference in the wide-band spread spectrum signal.

31. In order to solve the problem of direct sequence spread spectrum signal's check and recognition, a blind estimate algorithm is proposed, it based on cyclic spectrum theory and matrix transform.

32. Consequently a practical algorithm is provided for spread spectrum communication and channel code to use irreducible polynomials.

33. Analysis shows that this MSK spread spectrum communication system in the underwater acoustic channel is feasible.

34. To investigate the blind estimation of the symbol rate of a long code direct sequence spread spectrum(DSSS) signal, an algorithm based on autocorrelation processing is proposed.

35. Interconnection channel equipments' impedance mismatch is the key influence factor of system range performance in spread spectrum ranging system.

36. In order to lower the transmission power the Spread Spectrum Technique is introduced into the ionosonde.

37. PSK spread spectrum system that uses the digital correlator is explored and designed.

38. The spread spectrum technology is introduced to reduce EMI on the mother board.

39. The frequency hopping spread spectrum systems in the generator of jamming signal by programming is introduced.

40. The characteristics of pseudorandom spread spectrum sequence in the DSSS/BPSK signal exhibit the essential difference between the DSSS/BPSK signal and other conventional signals in communications.

41. The advantage of adaptive equalization over coding and spread spectrum is that a modem with adaptive equalization provides high data rates without any loss in bandwidth efficiency.

42. The ownership prover insert the watermark into the host signal using symmetric watermark technology based on spread spectrum.

43. In addition, we introduce the integration of the spread spectrum technology and the digital watermark technology, so this digital technology has a strong haleness and safety.

44. Pseudo-random sequence, as a code, has broad applications in spread spectrum communication, stream cipher, channel coding.

45. A fast simulation environment has been developed using MATLAB and SIMULINK for behavioral level simulation of spread spectrum clock generator based Fractional-N frequency synthesizers.

46. Spectra expanding of Spread spectrum communication system makes use of the spread spectrum function to realize, the typical spread spectrum function is pseudo random sequence code.

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47. The results of the computer simulation show that the characteristics of self-encoded spread spectrum sequences obtained with AR filter meet the requirements of SESS system.

48. This paper improves on Spread Spectrum Pulse Spacing Modulation (SS-PSM) system and presents a new method based on Symbol Spacing Modulation (SSM).

49. Audio information hiding algorithm based on spread spectrum is generally detected by correlation threshold but the orthogonal of pseudorandom sequence is always destroyed by perception reshaping.

50. To satisfy the high speed data processing requirement of automatic orientation in complex environment, based on the spread spectrum(SS) communication system, a digital correlator by VHDL is presented.

51. Spread spectrum communication uses much larger bandwidth than original information using pseudo noise ( PN ) sequences .

52. According to the characteristic of Through-the-Wall Surveillance (TWS), a novel TWS detector scheme is proposed which is based on sinusoidal frequency modulation and spread spectrum technologies.

53. The design of spread spectrum code sequence is constructing pseudo-random sequence which is possessed of different structure and good performances in order to satisfy the need of CDMA system.

54. In view of the acquisition in spread spectrum wireless data communication system, a new way using PN matched filter is proposed in this paper, which increase the efficiency of communication greatly.

55. The design of bit decision algorithm is a key technique for the DS spread spectrum sequence to be received correctly.

56. A new quasi - orthogonal hybrid spread spectrum communication algorithm and its realized scheme are proposed.

57. A method based on phase correction is proposed to enhance the performance of suppressing narrow-band interference of base-band direct sequence spread spectrum (DSSS) receiver.

58. It is supported by spread spectrum transmission and microcellular architecture technique.

59. Then digital matched filter (DMF), which is used to synchronize spread spectrum code, especially the multi-rate sampling in DMF is studied.