A Signal Subspace Detection Technique for Single Carrier Block Transmission with Unique Words
A Signal Subspace Detection Technique for Single Carrier Block Transmission with Unique Words
复制标题
具有唯一字的单载波块传输的信号子空间检测技术
DOI：
10.1109/lcomm.2011.121410.101472
复制
发表时间：
2011-02
期刊：
影响因子：
--
通讯作者：
Xu, Zhengyuan
中科院分区：
文献类型：
--
作者：
Zhu, Liang;Pei, Yukui;Ge, Ning;Lu, Jianhua;Xu, Zhengyuan
For frequency selective channels, conventional equalizations based on a whole vector space enhance the noise power at randomly distributed spectral nulls. A signal subspace detection technique is proposed for single carrier (SC) block transmission with unique words (UW). Different from conventional Fourier basis, a new orthogonal basis to orderly separate the space into signal subspace and noise subspace is adopted. In this way, known symbols of UW can compensate the noise subspace and facilitate data recovery by a maximum likelihood (ML) detector in the signal subspace, which is robust to the ill-conditioned channel matrix. The proposed technique does not require any feedback from the receiver to the transmitter. A near optimal performance is achieved with its computational complexity similar to the time domain equalization.
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