一种资源友好的零延时Turbo交织器设计  

Design of a Zero Delay Turbo Interleaver with Friendly Resources

作　　者：梁晨 LIANG Chen(The 20th Research Institute of CETC,Xi’an 710068,China)

机构地区：[1]中国电子科技集团公司第二十研究所,陕西西安710068

出　　处：《舰船电子对抗》2023年第3期117-120,共4页Shipboard Electronic Countermeasure

摘　　要：研究了Turbo编码器中二次置换多项式(QPP)交织器的设计优化,提出了一种资源友好的零延时QPP交织器设计方案。在算法上,通过比较器实现取余,简化了QPP交织器递推公式中定义的取余运算,节约了逻辑实现资源。通过对QPP交织器递推公式进行改进,分别对交织地址的奇偶序列进行并行递推,利用乒乓的方式输出交织地址,简化了每一拍时钟的逻辑运算电路,使得交织器可以工作在较高的时钟频率下。在时序上,递推运算实现了交织运算的零延迟,使得交织编码序列与顺序编码序列不存在时延,保证了编码器的工作效率。经验证,交织器设计稳定可靠,具有一定的实用价值。The design optimization of quadratic permutation polynomial(QPP)interleaver in Turbo encoder is studied,and a design scheme of zero-delay QPP interleaver with friendly resource is proposed.In the algorithm,the comparator is used to realize the residual,which simplifies the residual operation defined in the recursive formula of QPP interleaver,and saves the logical implementation resources.By improving the recursive formula of QPP interleaver,the odd and even sequences of the interleaved addresses are recursed in parallel,and the interleaver addresses are outputted by means of ping-pong,which simplifies the logic calculation circuit of each beat clock,and makes the interleaver work at a higher clock frequency.In the time sequence,the recursion operation realizes the zero delay of the interleaving operation,so that there is no delay between the interleaving encoding sequence and the sequential encoding sequence,which ensures the working efficiency of the encoder.It is proved that the design of interleaver is stable and reliable,and has definite practical value.

关 键 词：Turbo编码器 二次置换多项式交织器 零延时 资源友好 

分 类 号：TN921[电子电信—通信与信息系统]