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Very low variable-rate convolutional codes for unequal error protection in DS-CDMA systems
被引：3
|作者：
Lientz, A
Villasenor, J
机构：
[1] Department of Electrical Engineering, University of California, Los Angeles
关键词：
CDM;
orthogonal-codes;
telescopic protection codes;
variable-rate error protection;
D O I：
10.1109/26.602573
中图分类号：
TM [电工技术];
TN [电子技术、通信技术];
学科分类号：
0808 ;
0809 ;
摘要：
Convolutional codes based on Hadamard sequences can achieve both orthogonality and variable rate, In contrast with other convolutional coding techniques, these codes incur no processing gain penalty in direct-sequence code-division multiple-access (DS-CDMA) systems, We describe here class of such codes called ''telescopic protection codes.'' These codes enable variable-rate error protection in the manner of rate-compatible punctured-convolutional (RCPC) codes, but preserve the Hadamard orthogonality properties necessary to maintain processing gain that RCPC codes lack.
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页码：753 / 755
页数：3
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