Title :
Robust Beamforming Algorithm to Co-Channel Interference Cancellation in Space-Time Coded OFDM System
Author :
Li, Yu ; Sun, Xu ; Chen, Kangsheng
Author_Institution :
Dept. of Electron. Eng., Zhejiang Univ., Hangzhou
Abstract :
In this paper, a robust algorithm based on particle filter is proposed to improve the performance of the beamformers with uncertainty or errors in desired direction-of-arrivals (DOAs). In the proposed scheme, DOAs of desired signals are regarded as groups of random particles. Simulation results in a space-time coded orthogonal frequency division multiplexing (STC-OFDM) system show that the proposed algorithm can significantly improve the robustness of the beamformers to combat the co-channel interference over Rayleigh multipath fading channel
Keywords :
OFDM modulation; direction-of-arrival estimation; fading channels; filtering theory; interference suppression; multipath channels; radiofrequency interference; space-time codes; DOA; Rayleigh multipath fading channel; STC-OFDM; beamforming algorithm; co-channel interference cancellation; direction-of-arrival; orthogonal frequency division multiplexing system; particle filter; random particle; space-time coding; Acoustical engineering; Array signal processing; Direction of arrival estimation; Interchannel interference; Interference cancellation; OFDM; Particle filters; Radiofrequency interference; Robustness; Uncertainty;
Conference_Titel :
TENCON 2006. 2006 IEEE Region 10 Conference
Conference_Location :
Hong Kong
Print_ISBN :
1-4244-0548-3
Electronic_ISBN :
1-4244-0549-1
DOI :
10.1109/TENCON.2006.343733
