Title :
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
fDate :
3/1/2012 12:00:00 AM
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;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2012.012412.112328
