Title :
Decision aided compensation of residual frequency offset for MIMO-OFDM systems with nonlinear channel
Author :
Yang, Shouyi ; Xi, Jiangtao ; Wang, Fang ; Mu, Xiaomin ; Kobayashi, Hideo
Author_Institution :
Fac. of Inf. Eng., Zhengzhou Univ., Henan, China
Abstract :
In this paper, we propose a new approach to compensate the residual frequency offset (RFO) in multi-input multi-output orthogonal frequency division multiplexing (MIMO-OFDM) system with nonlinear channel working in the burst mode. The proposed approach consists of two stages. Firstly a decision aided method is proposed to eliminate the nonlinearity introduced by high power transmit amplifier (HPA). Then a new decision aided approach is employed to achieve the RFO compensation on the nonlinearity-free symbols. The effectiveness of the proposed approach has been verified by computer simulations.
Keywords :
MIMO systems; OFDM modulation; power amplifiers; wireless channels; MIMO-OFDM systems; decision aided compensation; multiinput multioutput orthogonal frequency division multiplexing; nonlinear channel; power transmit amplifier; residual frequency offset; Bit error rate; Computer simulation; Degradation; Frequency estimation; High power amplifiers; OFDM; Receiving antennas; Telecommunication computing; Transmitters; Transmitting antennas;
Conference_Titel :
Intelligent Signal Processing and Communication Systems, 2005. ISPACS 2005. Proceedings of 2005 International Symposium on
Print_ISBN :
0-7803-9266-3
DOI :
10.1109/ISPACS.2005.1595359
