Optimal training signals for MIMO OFDM channel estimation in the presence of frequency offset and phase noise
Optimal training signals for MIMO OFDM channel estimation in the presence of frequency offset and phase noise
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DOI：
10.1109/tcomm.2006.881358
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发表时间：
2006-10
影响因子：
8.3
通讯作者：
H. Minn;N. Al-Dhahir;Yinghui Li
中科院分区：
文献类型：
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作者：
H. Minn;N. Al-Dhahir;Yinghui Li
针对具有频偏和相位噪声的多输入多输出正交频分复用信道估计，提出了鲁棒的均方误差（MSE）最优训练信号设计方法，并给出了频偏和相位噪声对信道估计影响的分析和仿真结果。所提出的设计对于信噪比（SNR）、残余频率偏移和PN电平的中至高值更有利。在SNR = 10 dB时，我们提出的训练信号在归一化频偏下的归一化MSE降低|v| = 0.1、0.5时，对于一个发射天线分别约为9和19 dB，对于两个发射天线分别约为6和11 dB
We develop robust mean-square error (MSE)-optimal training signal designs for multiple-input multiple-output orthogonal frequency-division multiplexing channel estimation with frequency offset and phase noise (PN), and present analytical and simulation results for the frequency-offset and PN effects on channel estimation. The proposed designs are more advantageous for moderate-to-high values of signal-to-noise ratio (SNR), residual frequency offset, and PN level. At SNR = 10 dB, the normalized MSE reductions of our proposed training signals at normalized frequency offset |v|=0.1,0.5 are about 9 and 19 dB, respectively, for one transmit antenna, and 6 and 11 dB for two transmit antennas