Universiti Teknologi Malaysia Institutional Repository

Hybrid channel estimation technique with reduced complexity for LTE downlink

Al-Samman, Ahmed M. and Nunoo, Solomon and Abd. Rahman, Tharek and Chude-Okonkwo, Uche A. K. and Ngah, Razali (2015) Hybrid channel estimation technique with reduced complexity for LTE downlink. Wireless Personal Communications, 82 (2). pp. 1147-1159. ISSN 0929-6212

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Official URL: http://dx.doi.org/10.1007/s11277-015-2272-y

Abstract

This paper proposes a hybrid channel estimation (CE) method for orthogonal frequency division multiplexing technique for use in long-term evolution technology with application suitable for highly mobile devices, such as in passenger trains. This method, termed hybrid linear (HL) estimator, combines three different CE algorithms, namely, blocked-based least square (B-LS), fast fading-based LS (FF-LS), and linear minimum mean square error (LMMSE) estimators. This proposed estimation adaptively employs a given algorithm based on the mobility condition of the receiver. The computational complexity of HL estimator is reduced nearly to the half compared with LMMSE. The performance of proposed estimator is compared with the B-LS and FF-LS in terms of throughput and mean square error (MSE). Results show that the HL performs better than the B-LS and FF-LS in both MSE and throughput. The proposed method offers a good bit-error-rate for different velocities

Item Type:Article
Uncontrolled Keywords:channel estimation, computational complexity
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:55609
Deposited By: Fazli Masari
Deposited On:22 Sep 2016 01:19
Last Modified:15 Feb 2017 03:33

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