摘要
提出了适合垂直分层空时编码结构的盲信号检测和信道估计算法,在发射端进行了预编码,并利用一种类ESPRIT算法进行了盲信号检测和信道估计。与已提出的绝大多数垂直分层空时编码结构的信号检测和信道估计算法不同,去掉了接收天线数必须大于发射天线数这一约束。计算机仿真结果显示所提出的盲信号检测和信道估计算法与非盲算法几乎有相同的性能。
The blind algorithms for symbol detection and channel identification were proposed in the vertical bell lab's layered space-time coding (VBLAST) scheme. By introducing the pre-coding, a new VBLAST scheme was proposed so that both the original transmitted symbols and the channels can be estimated via an ESPRIT-like method. Furthermore, this scheme can also eliminate the constraint that the number of receive antennas must be more than transmit ones, which is necessary in the most proposed symbol detection and channel identification algorithm. Computer simulation results show that the proposed algorithms have the similar performance with the non-blind ones.
出处
《通信学报》
EI
CSCD
北大核心
2004年第12期14-22,共9页
Journal on Communications
基金
国家自然科学基金资助项目(60272071)教育部博士点基金资助项目(20020698024
20030698027)
关键词
分层空时码
阵列信号处理
子空间方法
盲符号检测
layered space-time code
array signal processing
subspace method
blind symbol detection
