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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[sentencedict.com], 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.