Title :
A Pilot Aided Multi-Cell Interference Cancellation with LMS Channel Estimation for STC OFDM Systems
Author :
She, Feng ; Luo, Hanwen ; Yang, Bo ; Huang, Jianguo
Author_Institution :
Dept. of Electron. Eng., Shanghai Jiao Tong Univ.
Abstract :
This paper proposed a new LMS based adaptive CCI cancellation algorithm for space-time block coded orthogonal frequency division multiplexing (STC OFDM) systems. We apply LMS based adaptive channel estimation by orthogonal pilot patterns to identify channel information of interference cells. And by the identical channel information of different cells, we can easily reconstruct the signal of received signal, and then subtract co-channel interference cancellation (CCI) signal from the received signal. Simulation result shows that the proposed approach can achieve enhancement of system performance
Keywords :
OFDM modulation; cellular radio; channel estimation; cochannel interference; interference suppression; least mean squares methods; matrix algebra; space-time codes; LMS based adaptive CCI cancellation algorithm; STC OFDM systems; adaptive channel estimation; co-channel interference cancellation; pilot aided multi-cell interference cancellation; space-time block coded orthogonal frequency division multiplexing; Channel estimation; Fading; Hydrogen; Interchannel interference; Interference cancellation; Interference suppression; Least squares approximation; OFDM; Radiofrequency interference; Signal processing algorithms;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2006. WiCOM 2006.International Conference on
Conference_Location :
Wuhan
Print_ISBN :
1-4244-0517-3
DOI :
10.1109/WiCOM.2006.72
