Title :
Channel estimation and signal detection for MIMO-OFDM with time varying channels
Author :
Song, Won-Gyu ; Lim, Jong-Tae
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., KASIT, Daejeon
fDate :
7/1/2006 12:00:00 AM
Abstract :
Time varying channels will degrade the performance of orthogonal frequency division multiplexing (OFDM) due to the interchannel interference (ICI). In this paper, we propose the channel estimation for multiple input multiple output (MIMO)-OFDM with time varying channels based on the grouped and equispaced pilot tones. Specifically, we approximate the time varying channels to the polynomials. Additionally, we propose the detection method for the OFDM with ICI.
Keywords :
MIMO systems; OFDM modulation; adjacent channel interference; channel estimation; polynomial approximation; signal detection; time-varying channels; ICI; MIMO; OFDM; approximation; channel estimation; interchannel interference; multiple input multiple output; orthogonal frequency division multiplexing; pilot tone; polynomial; signal detection method; time varying channel; Channel estimation; Convolution; Degradation; Frequency division multiplexing; Frequency synchronization; Interchannel interference; MIMO; OFDM; Polynomials; Signal detection;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOM.2006.224413
