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.
出处
《电子与信息学报》
EI
CSCD
北大核心
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)
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
Space-time block codes, Direct decoding, Frequency-selective fading channels, Array signal processing
