发明名称 |
Two-thirds rate modulation and coding scheme for Rayleigh fading channels |
摘要 |
The present invention is a method for generating short, non-systematic, non-linear (6,4) codes that may be implemented in a 4-ARY quadrature-quadrature phase shift keying (QQPSK or Q2PSK) system over GF(16). The codewords are non-systematic in that they do not directly contain the information that is to be transmitted and six symbols are sent to represent four symbols. The present invention uses a code construction method that generates two small, hand-optimized codeword sets and combines those two codeword sets to create two larger codeword sets. The two larger codeword sets are then combined to create a codeword set that is stored in a look-up table for use at a transmission station.
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申请公布号 |
US6424690(B1) |
申请公布日期 |
2002.07.23 |
申请号 |
US19990281130 |
申请日期 |
1999.03.29 |
申请人 |
HUGHES ELECTRONICS CORPORATION |
发明人 |
KAY STANLEY E.;ANTIA YEZDI |
分类号 |
H03M13/05;H03M13/21;H04L1/00;H04L27/18;(IPC1-7):H04L23/00 |
主分类号 |
H03M13/05 |
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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