频率选择性衰落信道下一种空时分组码的直接解码  

DIRECT DECODING IN A SPACE-TIME BLOCK CODE FOR FREQUENCY-SELECTIVE FADING CHANNELS

作　　者：赵铮[1] 殷勤业[1] 张红[1] 张建国[1] 

机构地区：[1]西安交通大学电信学院,西安710049

出　　处：《电子与信息学报》2003年第11期1452-1462,共11页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(No.69872029);教育部博士点基金(No.1999069808)

摘　　要：该文针对 3个发射天线,1个接收天线的空时分组码系统,提出了频率选择性衰落信道下,无需信道估计,直接对空时分组码进行解码的方法,把子空间方法应用于空时编码当中,从信号处理和空时编码两个方面考虑空时分组码的直接解码问题,利用空时分组码所特有的正交设计,较为方便地从子空间中解出信号信息,从单载波的角度,解决了频率选择性衰落下空时分组码的解码问题。Monte-Carlo仿真给出了直接解码算法的性能,并与使用准确信道信息的解码算法做了性能比较。This paper proposes a decoding scheme in space-time block code system with three transmitting antennas and one receiving antenna for frequency-selective fading channels, which does not require channel estimation at the transmitter or receiver. By applying the subspace method to space-time codes, the direct decoding is accomplished from both a signal processing and space-time coding perspective. With the special orthogonal design of space-time block codes, the input of the space-time block code system is obtained from the subspace. The direct decoding is addressed for frequency-selective fading channels from a single carrier perspective. Monte Carlo simulations show the performance of direct decoding and the performance comparison with the decoder using the perfect channel information.

关 键 词：频率选择性 衰落信道 空时分组码 直接解码 阵列信号处理 

分 类 号：TN911.7[电子电信—通信与信息系统] TN911.22[电子电信—信息与通信工程]