Title :
A channel estimation method based on pilot and EM algorithm for OFDM systems
Author :
Yun, Chen ; Xiaoyang, Zeng ; Zhi, Liu ; Bo, Shen
Abstract :
A channel estimation method based on pilot and EM algorithm 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. A VLSI architecture for the algorithm is proposed
Keywords :
VLSI; channel estimation; error statistics; expectation-maximisation algorithm; BER; OFDM systems; VLSI architecture; bit error rate; channel estimation method; expectation-maximization algorithm; AWGN; Bit error rate; Channel estimation; Convergence; Finite impulse response filter; Frequency synchronization; Iterative algorithms; OFDM; Time frequency analysis; Very large scale integration;
Conference_Titel :
Consumer Electronics, 2006. ICCE '06. 2006 Digest of Technical Papers. International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
0-7803-9459-3
DOI :
10.1109/ICCE.2006.1598447
