CAJ | 학술논문

基于非规则重复累加码(IRA)提出一种冗余递增自动重传协议(IR-HARQ)且该自动重传协议的性能取决于速率匹配删截IRA码的性能.在此基础上提出用线性规划结合一维概率密度演化算法解决核心的速率匹配删截IRA码的设计问题,并给出了设计结果.仿真表明:相比于基于turbo码的相应方案,所提方案的性能在短帧(帧长1 024)下大体相仿,而在长帧(帧长4 096)下表现出一定的优势.相比于turbo和低密度校验码,基于IRA码的方案在解码的复杂性以及并行化方面具有独到的优势.
기우비규칙중복루가마(IRA)제출일충용여체증자동중전협의(IR-HARQ)차해자동중전협의적성능취결우속솔필배산절IRA마적성능.재차기출상제출용선성규화결합일유개솔밀도연화산법해결핵심적속솔필배산절IRA마적설계문제,병급출료설계결과.방진표명:상비우기우turbo마적상응방안,소제방안적성능재단정(정장1 024)하대체상방,이재장정(정장4 096)하표현출일정적우세.상비우turbo화저밀도교험마,기우IRA마적방안재해마적복잡성이급병행화방면구유독도적우세.
An incremental redundancy hybrid automatic repeatrequest (IR-HARQ)scheme based on irregular repeat-accumulate (IRA) codes is proposed. The design of rate compatible punctured IRA codes suitable for an IR-HARQ scheme is well formulated and efficiently solved by a linear-programming method, along with a one-dimensional approach for density evolution. Compared to IR-HARQ schemes based on turbo codes, simulation shows that the proposed IR-HARQ schemes based on IRA codes may achieve almost the same performance at a block size of 1 024, but better throughput at a block size of 4 096. The advantages of the proposed scheme in implementation, including decodingcomplexity and parallelism, make it more attractive in practicethan the IR-HARQ schemes based on both turbo and LDPCcodes.