Title :
An improved adaptive channel prediction for MIMO-OFDM systems
Author :
Zhang, Lei ; Zhen Jin ; Wenzheng Chen ; Zhang, Xianmin
Author_Institution :
Inst. of Inf. & Commun. Eng., Zhejiang Univ., Hangzhou
Abstract :
This paper presents a new simplified adaptive channel prediction scheme for MIMO-OFDM system. It is based on the conjugate gradient (CG) algorithm. This simplification also uses Alamouti´s STBC code which leads to a simple decoding process. Compared with the traditional RLS algorithm, CG performances better in the decision-directed demodulation mode. And this scheme is also designed to have the capability to restrain the noise and it causes a better prediction result.
Keywords :
MIMO communication; OFDM modulation; block codes; least squares approximations; recursive estimation; space-time codes; Alamouti STBC code; MIMO-OFDM systems; RLS algorithm; conjugate gradient algorithm; decision-directed demodulation mode; decoding process; improved adaptive channel prediction; Channel estimation; Character generation; MIMO; Prediction algorithms; Predictive models; Receiving antennas; Resonance light scattering; Transmitting antennas; Wideband; Wireless communication; Adaptive channel prediction; CG algorithm; MIMO-OFDM; RLS algorithm;
Conference_Titel :
Communications and Networking in China, 2008. ChinaCom 2008. Third International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-2373-6
Electronic_ISBN :
978-1-4244-2374-3
DOI :
10.1109/CHINACOM.2008.4685195
