Title :
Regression model based channel estimation for OFDM with multiple transmitters
Author :
Song, Won-Gyu ; Lim, Jong-Tae
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci, Korea Adv. Energy Res. Inst., Daejeon
Abstract :
Based on a nonlinear two-dimensional (2-D) regression model, we analyze the OFDM system performance with respect to the operation block size and pilot density. Specifically, we propose a regression model based channel estimation for the OFDM system with multiple transmit antennas. To obtain the proper estimation, we introduce the guidelines for designing pilot values and an expectation-maximization (EM) based solution with lower computation complexity
Keywords :
OFDM modulation; antenna arrays; channel estimation; expectation-maximisation algorithm; regression analysis; transmitting antennas; OFDM system; channel estimation; expectation-maximization algorithm; multiple transmitting antennas; orthogonal frequency division multiple access; two-dimensional regression model; Bit error rate; Channel estimation; Fading; Guidelines; Iterative algorithms; OFDM; Performance analysis; Time frequency analysis; Transmitters; Transmitting antennas;
Journal_Title :
Broadcasting, IEEE Transactions on
DOI :
10.1109/TBC.2006.880325
