Title :
An adaptive channel tracking method for MIMO-OFDM systems
Author :
Tong Jun ; Gong Yaohuan ; Sun Shengxian
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong, China
Abstract :
The tracking of the time-varying channel is crucial for MIMO-OFDM wireless communication systems. Aiming at doubly-selective fading MIMO channels, we present a novel pilot pattern and the corresponding adaptive channel tracking algorithm. Compared with the traditional pilot patterns, the new pattern has higher frequency efficiency and is more suitable for large transmit arrays. The computational complexity, frequency efficiency and BER performance of the system assisted by the proposed channel tracking scheme are analyzed. Simulation results demonstrate that the proposed scheme can track the timevarying channel effectively.
Keywords :
MIMO systems; OFDM modulation; adaptive estimation; channel estimation; computational complexity; error statistics; mobile radio; time-varying channels; transmitting antennas; 3G wireless network; 4G wireless network; BER performance; MIMO-OFDM systems; adaptive channel estimation; adaptive channel tracking method; computational complexity; fading channels; frequency efficiency; pilot pattern; time-varying channel; transmit arrays; wireless communication systems; Bit error rate; Fading; MIMO; OFDM; Performance analysis; Receiving antennas; Time-varying channels; Transmitters; Transmitting antennas; Wireless communication;
Conference_Titel :
Communications, Circuits and Systems, 2004. ICCCAS 2004. 2004 International Conference on
Conference_Location :
Chengdu
Print_ISBN :
0-7803-8647-7
DOI :
10.1109/ICCCAS.2004.1346098
