Title :
Decision aided joint compensation of clipping noise and nonlinearity for MIMO-OFDM systems
Author :
Yang, Shouyi ; Xi, Jiangtao ; Mu, Xiaomin
Author_Institution :
Fac. of Inf. Eng., Zhengzhou Univ., Henan, China
Abstract :
In this paper, we propose a new iterative approach to compensate the nonlinearity and clipping noise in multi-input multi-output orthogonal frequency division multiplexing (MlMO-OFDM) system with nonlinear channel. 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 this improved decision observations are employed to achieve the clipping noise compensation. The effectiveness of the proposed approach has been verified by computer simulations.
Keywords :
MIMO systems; OFDM modulation; amplifiers; data communication; iterative methods; MIMO-OFDM systems; clipping noise; decision aided joint compensation; iterative approach; multiinput multioutput orthogonal frequency division multiplexing; nonlinear channel; power transmit amplifier; Bit error rate; Block codes; Computer simulation; Degradation; High power amplifiers; MIMO; Noise cancellation; OFDM; Peak to average power ratio; Telecommunication computing;
Conference_Titel :
Communications and Information Technology, 2005. ISCIT 2005. IEEE International Symposium on
Print_ISBN :
0-7803-9538-7
DOI :
10.1109/ISCIT.2005.1566956
