Title :
Design of ICI Canceling Codes for OFDM Systems Based on Capacity Maximization
Author :
Yun, Jae Yeun ; Chung, Sae-Young ; Lee, Yong H.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon
fDate :
3/1/2007 12:00:00 AM
Abstract :
Rate-t/k (tlesk) intercarrier interference (ICI) canceling codes for orthogonal frequency division multiplexing (OFDM) systems are proposed. The capacity lower bounds of OFDM systems employing these codes are derived for time-varying frequency-selective channels. The optimal codes maximizing these bounds are designed numerically. The simulation results indicate that the optimal codes can provide both higher capacity lower bounds and lower bit error rates (BERs) than the existing ICI canceling codes
Keywords :
OFDM modulation; adjacent channel interference; channel capacity; channel coding; error statistics; intercarrier interference; interference suppression; optimisation; time-varying channels; ICI canceling code; OFDM; bit error rate; capacity maximization; frequency-selective channel; intercarrier interference; orthogonal frequency division multiplexing system; time-varying channel; AWGN; Bit error rate; Discrete Fourier transforms; Interference cancellation; Maximum likelihood estimation; Numerical simulation; OFDM; Partial response channels; Time domain analysis; Time varying systems; Capacity; intercarrier interference (ICI); orthogonal frequency division multiplexing (OFDM); time-varying channel;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2006.884035
