摘要
本文探讨了无线移动信道中空时格形码的一种自适应解码技术 .通过分析无周期间插正交导引信号下空时格形码的最大似然序列检测 ,指出可利用逐幸存路径处理得到该情形下可实用的最大似然序列检测算法 ;以此为依据 ,结合利用自调整LMS算法实现的信道跟踪 ,本文提出一种空时格形码的自适应解码器 ,该解码器具有所采用信道跟踪参数与信道衰落速度无关的优点 ;
The problem of adaptive decoding of space-time trellis code (STTC) on the mobile wireless channels is considered. After analyzing the maximum likelihood sequence detection (MLSD) of STTC transmission burst with no periodically inserted pilot symbols, we show that per-survivor processing (PSP) can be used to obtain a practical approximated MLSD in this situation. Based on this, a PSP decoder with self-tuning Least-Mean-Square channel tracking is proposed with the advantage that there are only fading rate independent parameters to be pre-determined. Computer simulation results are included to support our development.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2001年第10期1352-1355,共4页
Acta Electronica Sinica
关键词
自适应解码器
移动通信
逐幸存路径处理
空时格形码
最大似然序列检测
Communication channels (information theory)
Computer simulation
Decoding
Least squares approximations
Mathematical models
Maximum likelihood estimation
Mobile telecommunication systems
Signal detection
Space time adaptive processing
Trellis codes
