Channel Estimation Scheme with Low-Complexity Discrete Cosine Transform in MIMO-OFDM System

被引：1
|
作者：
Takeda, Daisuke [1 ]
Tanabe, Yasuhiko [1 ]
机构：
[1] Toshiba R&D Ctr, Kawasaki, Kanagawa 2128582, Japan
来源：
IEICE TRANSACTIONS ON COMMUNICATIONS | 2009年 / E92B卷 / 12期
关键词：
OFDM; MIMO; channel estimation; discrete cosine transform; ALGORITHM;
D O I：
10.1587/transcom.E92.B.3836
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Channel estimation is a key baseband processing task in wireless systems. Filtering or smoothing algorithms can improve the accuracy of channel estimates and the Discrete Cosine Transform (DCT) can be used for this purpose. By using the DCT, performance will be improved compared to the straight-forward approach of per subcarrier estimation (PSE). However, the complexity of the DCT is not negligible. This paper proposes a low-complexity channel estimation scheme using the DCT. Simulation results show that the performance is improved by more than 1dB compared with PSE in MIMO-OFDM system.
引用
收藏
页码：3836 / 3842
页数：7
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