Invention Grant
- Patent Title: Anti-jam communications having selectively variable peak-to-average power ratio including a chaotic constant amplitude zero autocorrelation waveform
- Patent Title (中): 抗干扰通信具有选择性地可变的峰均功率比,包括混沌恒幅零自相关波形
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Application No.: US12496214Application Date: 2009-07-01
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Publication No.: US08379689B2Publication Date: 2013-02-19
- Inventor: Alan J. Michaels , David B. Chester
- Applicant: Alan J. Michaels , David B. Chester
- Applicant Address: US FL Melbourne
- Assignee: Harris Corporation
- Current Assignee: Harris Corporation
- Current Assignee Address: US FL Melbourne
- Agency: Fox Rothschild, LLP
- Agent Robert J. Sacco
- Main IPC: H04B1/00
- IPC: H04B1/00

Abstract:
A spread spectrum communication system includes a channel encoder configured for modulating a carrier signal with data to form an information signal. A spreading sequence generator is configured for generating a spreading sequence having a phase angle dependent upon a chaotic sequence and contiguously distributed over a predetermined range. The chaotic sequence also has a magnitude which is selectively dependent upon the pseudo-random number or chaotic sequence. The invention also includes a multiplier configured for forming a spread spectrum signal by multiplying the information signal by the spreading sequence. The spreading sequence generator is responsive to a magnitude control signal for controlling the selective dependency of said magnitude. The magnitude can be constant to form a constant amplitude zero autocorrelation signal. Alternatively, the magnitude can be allowed to vary in selectively controlled chaotic or pseudo-random manner to vary a peak to average power ratio.
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