Time-Delay Estimation in Multiple-Input Single-Output Systems

被引：0
|
作者：
Kocak, Fatih [1 ]
Gezici, Sinan [1 ]
机构：
[1] Bilkent Univ, Dept Elect & Elect Engn, TR-06800 Ankara, Turkey
来源：
2010 IEEE 21ST INTERNATIONAL SYMPOSIUM ON PERSONAL INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC) | 2010年
关键词：
Time-delay estimation; Cramer-Rao lower bound (CRLB); multiple-input single-output (MISO); differential evolution (DE); maximum likelihood (ML) estimator; DIFFERENTIAL EVOLUTION;
D O I：
10.1109/PIMRC.2010.5671587
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, the time-delay estimation problem is studied for multiple-input single-output (MISO) systems. First, a theoretical analysis is carried out by deriving the Cramer-Rao lower bound (CRLB) for time-delay estimation in a MISO system. Then, the maximum likelihood (ML) estimator for the time-delay parameter is obtained, which results in a complex optimization problem in general. In order to provide a solution of the ML estimator with low computational complexity, ML estimation based on a genetic global optimization algorithm, namely, differential evolution (DE), is proposed. Simulation studies for various fading scenarios are performed to investigate the performance of the proposed algorithm.
引用
收藏
页码：200 / 205
页数：6
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