公开(公告)号：US3805236A

公开(公告)日：1974-04-16

申请号：US32101573

申请日：1973-01-04

Applicant: THOMSON CSF

Inventor： BATTAIL G

IPC: H04L1/00 ,  H03K13/00 ,  H04L1/10

CPC classification number: H04L1/0059

Abstract: A plurality of complex replicas, or estimates, of each transmitted information bit, based on the parity-check equations, are formed in addition to the simple replica which the corresponding received information bit constitutes. To each replica is associated a likelihood magnitude of the form logm(1P)/P where P is the probability of the replica being erroneous. The decision is made by an algebraic adder forming the sum of the likelihoods of different estimates of the information bit, those likelihoods being associated with a plus or minus sign according to whether the binary value of the replica is 0 or 1. The sign of the sum gives the decoded value, and the absolute value of the sum, the likelihood of the decoded value.

Abstract translation: 除了对应的接收信息位构成的简单副本之外，还基于奇偶校验方程形成每个发送的信息位的多个复合副本或估计。 对于每个复制品与logm（1-P）/ P的形式的似然值相关联，其中P是复制品是错误的概率。