A Low Complexity MMSE for OFDM Systems over Frequency-Selective Fading Channels

Author

Ma, Tian-Ming ; Shi, Yu-Song ; Wang, Ying-Guan

Author_Institution

Key Lab. of Wireless Sensor Network & Commun., Shanghai Inst. of Microsyst. & Inf. Technol., Shanghai, China

Volume

16

Issue

3

fYear

2012

fDate

3/1/2012 12:00:00 AM

Firstpage

304

Lastpage

306

Abstract

Channel estimation is one of the key technologies in Orthogonal Frequency Division Multiplexing (OFDM) systems, which has received more and more consideration. A modified Minimum Mean Square Error (MMSE) is proposed and simulated by MATLAB over a frequency-selective fading channel. Comparing with the conventional MMSE, this algorithm has the advantage of low complexity. Meanwhile, it shows little attenuation of Mean Square Error (MSE) and Bit Error Rate (BER) performances according to the final simulation results, which is promising for practical applications.

Keywords

OFDM modulation; channel estimation; error statistics; fading channels; least mean squares methods; Matlab; OFDM systems; bit error rate performances; channel estimation; frequency-selective fading channels; low-complexity MMSE; modified MMSE; modified minimum mean square error; orthogonal frequency division multiplexing systems; Attenuation; Bit error rate; Channel estimation; Computational complexity; Frequency-selective fading channels; OFDM; OFDM; channel estimation; frequency-selective fading channel;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2012.012412.112328

Filename

6141493