3GPP标准下的比特交织Turbo码高效编译码方案  

Turbo codes for bit-interleave efficient encoding and decoding scheme based on 3GPP standards

作　　者：徐琳[1] 谭进[1] 吴玉成[1] 

机构地区：[1]重庆大学通信工程学院,重庆400044

出　　处：《计算机应用研究》2010年第11期4215-4217,共3页Application Research of Computers

基　　金：中国博士后基金资助项目(20090450787);重庆市教委科技项目(KJ08A09);国家"211工程"创新人才培养计划资助项目(S-09102)

摘　　要：通过对3GPP标准交织器与其他交织器比较说明了其优越性,并对3GPP标准下高阶调制与Turbo码结合的问题进行了研究。仿真结果表明在相同的Turbo码译码错误率下,简化的解调算法比传统软判决信息算法在性能上仅有不到0.3dB的损失,在此基础上给出了一种可提高分集阶数的编译码方案,即在调制前增加比特交织器,解调后进行比特解交织。通过仿真验证,此方法可以获得较好的性能。Based on compared the 3GPP standard interleaver with the others,shows its superiority,relying on the 3GPP standard and investigation of the abllity of Turbo codes combined with high order modulation,the simulation shows that the performance difference of simplified demodulation algorithm and traditional soft-decision algorithm for the same decoding error rate is within 0.3 dB.Given an encoding and decoding scheme which could increase a diversity order.Add bit interleaver before modulation,then bit deinterleaving after demodulation,imulations result show the method can obtain better performance.

关 键 词：交织器 高阶调制 软判决 分集阶数 

分 类 号：TN911.22[电子电信—通信与信息系统]