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基于子空间的STC-OFDM系统信道盲估计算法

Subspace-Based Blind Channel Estimation Algorithm for Space Time Coding Orthogonal Frequency Division Multiplexing Systems
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摘要 针对使用2个发射天线和2个接收天线并且采用循环前缀的空时编码正交频分复用系统(STC-OFDM),提出了一种信道盲估计算法,并给出信道可被辨识的条件.该算法采用基于子空间的方法,可在2个常数的意义上确定信道冲激响应.该算法无需预编码或恒模调制.仿真结果验证了该盲估计算法的有效性. A subspace-based blind channel estimator has been developed for space time coding orthogonal frequency division multiplexing （STC-OFDM） system with two transmit antennas and two receive antennas. A condition that guarantees multichannel to be identifiable to two ambiguity parameters is given. The method does not need precoding or constant-modulus （CM） modulating. Finally, simulation results demonstrate the performance of the proposed blind algorithm.
作者 薛艳明 苏广川
机构地区 北京理工大学信息科学技术学院电子工程系
出处 《北京理工大学学报》 EI CAS CSCD 北大核心 2005年第7期632-635,共4页 Transactions of Beijing Institute of Technology
关键词 信道盲估计 空时编码 正交频分复用 子空间方法 blind channel estimation space time coding orthogonal frequency division multiplexing subspace-based method
分类号 TN92 [电子电信—通信与信息系统]
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参考文献12

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北京理工大学学报
2005年 第7期

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