发明名称 |
SATELLITE RECEIVER CODE RATE SWITCHING APPARATUS |
摘要 |
A satellite signal receiver (12) includes an input demodulator (7) followed by a Viterbi decoder (26) and a Reed-Solomon decoder (28). A received signal is encoded with information including error-representative information, and exhibits an error correction code rate which is a function of the power level of a satellite transmitted signal. The demodulator (7) produces control signals representing the presence or absence of synchronism with the received signal, and signal quality (e.g. signal-to-noise ratio). The Reed-Solomon decoder (28) produces a control signal indicating whether or not error detection and correction is occurring properly. These control signals are sensed by a control network to change the code rate of the Viterbi decoder if necessary. |
申请公布号 |
WO9515033(A1) |
申请公布日期 |
1995.06.01 |
申请号 |
WO1993US11338 |
申请日期 |
1993.11.22 |
申请人 |
THOMSON CONSUMER ELECTRONICS, INC.;STEWART, JOHN, SIDNEY |
发明人 |
STEWART, JOHN, SIDNEY |
分类号 |
H04B7/185;H04L1/00 |
主分类号 |
H04B7/185 |
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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