发明名称 |
SOFT-DECISION RECEIVER AND DECODER FOR DIGITAL COMMUNICATION |
摘要 |
A receiver for soft decision and decoding for deriving an appropriate soft- decision value so as to reduce the error rate at the output of a decoder such as a Viterbi decoder. A length V of continuous transmission sequences possible to be generated is set greater than a memory length L of a channel (V>L). By providing branch metric producing circuits as many as 2N (N=2 V) and add/compare/select apparatus (ACS apparatus) of as many as N for respective states corresponding to combinations of transmissio n sequence data of V, the accuracy of a soft-decision value is enhanced. Further, a sof t- decision value producing circuit performs a process not based on path metrics but based on survivor metrics. This allows a digital signal processor to easily perform the proces s.
|
申请公布号 |
CA2180311(A1) |
申请公布日期 |
1997.04.26 |
申请号 |
CA19962180311 |
申请日期 |
1996.07.02 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
NAGAYASU, TAKAYUKI |
分类号 |
H03H21/00;H03M13/00;H03M13/23;H03M13/41;H03M13/45;H04B3/06;H04B7/005;H04L25/08;(IPC1-7):H04L1/22;H04B1/16 |
主分类号 |
H03H21/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|