超宽带通信中空时分组码的一种闭式盲解码法  

Closed-form blind decoding of space-time block codes for ultra-wideband transmissions

作　　者：成先涛[1] 朱维乐[1] 

机构地区：[1]电子科技大学电子工程学院,四川成都610054

出　　处：《系统工程与电子技术》2006年第1期37-39,94,共4页Systems Engineering and Electronics

摘　　要：针对应用于超宽带(UWB)通信中的正交空时分组码提出了一种计算复杂度较低的盲解码方法。利用正交空时分组码的特性,估计出信道矩阵,并将该信道矩阵用于最大似然接收机,从而得到发送信号的估计。平坦衰落环境中的仿真表明,该方法能够实现和相关接收相同的分集增益;并且随着信道相关时间的增加,性能逐渐接近于相关接收。A computationally simple approach to blind deeming of orthogonal space-time block codes （STBC） for ultra-wideband （UWB） transmissions is proposed. The properties of orthogonal space-time block codes are exploited to estimate the channel matrix, which is subsequently used in the maximum likelihood （ML） receiver to decode the symbols. Simulations in flatfading scenarios show that, compared to the coherent decoding algorithm, the proposed algol rithm can achieve the same diversity, and with the increase of channel coherence time, its performances approach those of the coherent receiver.

关 键 词：超宽带 冲激无线电 空时分组码 盲解码 

分 类 号：TN973.3[电子电信—信号与信息处理]