移动衰落信道中BCH码的两种新的交织方案

TWO NOVEL INTERLEAVING SCHEMES OF BCH CODES IN MOBILE FADING CHANNELS

提出了两种新的交织方案 ,即均匀分布的伪随机交织与Rayleigh分布的伪随机交织 .并对采取这两种交织方案的BCH(63 ,3 9,4 ) ,BCH (1 2 7,78,7)码在移动衰落信道下的纠错性能进行了计算机仿真 ,且与周期交织方案的结果作了比较。仿真结果表明 :在对误码率要求不高时 ,采用伪随机交织方案可减少平均时延 ;

This paper presents two novel pseudonym random interleaving schemes whose interleaving degree obey uniform distribution and Rayleigh distribution.The performance of BCH(63,39,4) and BCH(127,78,7) code using these two schemes and periodic interleaving scheme in mobile fading channels is obtained by simulation.The results show that pseudonym random interleaving can decrease the averge time delay on some occasions and it is also a good cipher scheme.