发明名称 |
Spread-spectrum GMSK/M-ary radio with oscillator frequency correction |
摘要 |
A communication device includes a transmitter and receiver. The transmitter includes an M-ary encoder configured to generate an M-1 number of distinctive symbols each comprising k bits. M is equal to 2k and k is a positive integer. The transmitter also includes a code generator configured to produce spread spectrum codeword sequences based on the symbols generated by the M-ary encoder and based on a first and a second Gold code polynomials. The transmitter sends a radio signal based on the spread spectrum codeword sequences. The receiver is configured to receive the radio signal. The receiver includes a first shift register configured to receive an input signal generated based on the received radio signal and a second shift register configured to receive and circularly shift a locally generated codeword sequence that is identical to the codeword sequence used to encode the symbols.
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申请公布号 |
US6760393(B1) |
申请公布日期 |
2004.07.06 |
申请号 |
US20000564683 |
申请日期 |
2000.05.04 |
申请人 |
NAVCOM TECHNOLOGY, INC. |
发明人 |
ALISOBHANI JALAL;LEIMAR DONALD K.;WOO RICHARD KAI-TUEN;KAPLAN MARK PHILIP |
分类号 |
H04L27/00;H04L27/20;H04L27/22;(IPC1-7):H04L7/00 |
主分类号 |
H04L27/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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