Pseudo-random number sequence output unit, transmitter,...

Pulse or digital communications – Spread spectrum

Reexamination Certificate

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C375S146000, C375S147000

Reexamination Certificate

active

07099366

ABSTRACT:
A transmitter, receiver, and communication system that utilize a pseudo-random number sequence (PRNS) output unit that provides a PRNS of length N. The PRNS output unit generates the PRNS responsive to a number (s) of prescribed positive integers (qx), a prescribed real impulse constant (r), and a prescribed non-zero real constant (C), where 1<x<s. The PRNS output unit includes an input acceptance section that accepts the number (s) of real number sequence initial values (Yx), and the number (s) of integer parameters (px); and a calculation section that uses the prescribed real impulse constant (r), the prescribed non-zero real constant (C), the real number sequence initial values (Yx), the integer parameters (px). and the prescribed positive integers (qx) to calculate a recurrence formula that is used to generate a PRNS (z′[y]) of length N, and that outputs the PRNS (z′[y]), where 1<y<N.

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Chi-Chung Chen, et al., “Optimal Chaotic Spread Spectrum Sequences for Uplink CDMA Systems”, IEEE Symposium on Adaptive Systems for Signal Processing, Communications, and Control, XP-010521626, Oct. 1, 2000, pp. 135-140.
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