基于DSTBC的多级接收器  

Multistage Receiver based on DSTBC

作　　者：程智慧[1] 李东伟[2] 王军生[1] 练岚香[2] 

机构地区：[1]海军装备技术研究所,北京102442 [2]北京理工大学,北京100081

出　　处：《通信技术》2011年第5期140-142,共3页Communications Technology

摘　　要：差分空时分组码(DSTBC)由于具有全空间分集且译码过程无需信参估计而备受青睐。在准静态衰落信道下,差分空时相干检测和传统相干检测有3 dB的衰减;在快衰落信道高信噪比下,DSTBC性能衰减更甚。一种基于Chiavaccini E和Vitetta G M文章所提的多级DSTBC架构应运而生,该架构适用于当信噪比从中等强度过渡到高等强度且衰减率从0.02到0.07的情况,仿真结果表明,运用该架构的DSTBC在快衰落信道高信噪比下性能优异。DSTBC attracts much attention for its provision of full spatial diversity and decoding without channel state information.In a static fading channel,the BER（bit error rate） performance of differential detection has a degradation of 3 dB as compared with the traditional coherent detection,while in a fast fading channel an even bigger degradation.A multistage receiver for DSTBC based on multistage frame suggested by Chiavaccini E and Vitetta G M is proposed,and the simulation shows that the proposed receiver could work efficiently at a moderate to high SNR and at a fading rate from 0.02 to 0.07.

关 键 词：差分空时分组码 多级接收器 信噪比 中等强度 

分 类 号：TN914.3[电子电信—通信与信息系统]