一种适合于低压PLC信道的组合译码混合ARQ算法

针对低压PLC信道具有传输特性不稳定的特点,提出了一种混合ARQ实用方案.在方案中,采用重发数据的重复率随重发次数增加而增加的策略,以尽快结束重传过程.其次,给出了译码失误率的估算公式.在译码方案中增加译码失误率的判断环节,以保证译码的可信度.整个方案具有算法简单,自适应能力强的特点.

Adaptive Code Combining Algorithms for Hybrid ARQ System Based on Low Power PLC

An algorithms of code combining for hybrid ARQ is presented.In order to end the resending process as quickly as possible,the algorithms adopts a strategy sending the same date R times in one resending frame,and R is increasing with the sequence number of resending.The second,a method to estimate the probability of decoding mistake is given.Using the method the probability of decoding mistake can be estimated and be controlled under a given level.So the credibility of decoding can be ensured.The algorithms is simple,efficient and adaptive to the changing of channel,there for is suitable to the systems with unstable channels,such as the low voltage power line carrier system.