DocumentCode
3471198
Title
A pilot based EM channel estimator for OFDM systems
Author
Yun, Chen ; Zhi, Liu ; Xiaoyang, Zeng
Author_Institution
State Key Lab. of ASIC & Syst., Fudan Univ., Shanghai
Volume
2
fYear
2005
fDate
24-0 Oct. 2005
Firstpage
1112
Lastpage
1115
Abstract
A pilot based EM channel estimator is proposed. The channels are estimated using the EM (expectation-maximization) algorithm, while making use of pilot tones to obtain the initial estimate for iterative steps. Simulation results show that the bit error rate (BER) can be significantly reduced compared with conventional algorithm and iterative times are less than the common EM algorithm. VLSI architecture for the algorithm is proposed
Keywords
OFDM modulation; VLSI; channel estimation; error statistics; expectation-maximisation algorithm; OFDM systems; VLSI architecture; bit error rate; channel estimator; expectation-maximization algorithm; pilot tones; Application specific integrated circuits; Bit error rate; Channel estimation; Frequency estimation; Iterative algorithms; Laboratories; Neodymium; OFDM; Quadrature phase shift keying; Very large scale integration; Channel Estimation; EM algorithm; OFDM;
fLanguage
English
Publisher
ieee
Conference_Titel
ASIC, 2005. ASICON 2005. 6th International Conference On
Conference_Location
Shanghai
Print_ISBN
0-7803-9210-8
Type
conf
DOI
10.1109/ICASIC.2005.1611502
Filename
1611502
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