A Derivation on the Equivalence Between Newton's Method and DF DFT-Based Method for Channel Estimation in OFDM Systems

被引：4
|
作者：
Ku, Meng-Lin [1 ]
Huang, Chia-Chi [1 ]
机构：
[1] Natl Chiao Tung Univ, Dept Commun Engn, Hsinchu 300, Taiwan
来源：
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2008年 / 7卷 / 10期
关键词：
Orthogonal frequency division multiplexing; space-time block code; discrete Fourier transform; channel estimation; Newton's method; decision-feedback;
D O I：
10.1109/T-WC.2008.070583
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：
In this paper, we derive the decision-feedback (DF) discrete Fourier transform (DFT)-based channel estimation method from Newton's method for space-time block code (STBC)/orthogonal frequency division multiplexing (OFDM) systems. Through our derivation, the equivalence between Newton's method and the DF DFT-based method is established. Computer simulations are also used to demonstrate the equivalence of the two methods in terms of BER and normalized square error (NSE) performance. Finally, the results presented in this paper also hold for conventional OFDM systems.
引用
收藏
页码：3982 / 3987
页数：6
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