Title :
A Practical Cluster-Based Channel Estimation Method for IEEE 802.16e
Author :
Zhou, Xiangwei ; Zhang, Zhaoyang ; Cheng, Peng
Author_Institution :
Dept. of Inf. Sci. & Electron. Eng., Zhejiang Univ., Hangzhou
Abstract :
A novel channel estimation method is proposed to improve the performance of highly mobile applications specified by IEEE 802.16e. It utilizes the continuity of channel variations and brings increment of signal-to-interference ratio (SIR). It is suitable to the special scheme of pilot distribution and is also practical for no prior statistical knowledge of channel is needed. Furthermore, based on cluster structure, it significantly reduces the computational complexity. The mean square error (MSE) floor of our estimator drops more than 7 dB due to the improvement in SIR. The simulation results prove the enhanced performance of estimator MSE and system bit error rate (BER) in fading channels of rapid time-variations
Keywords :
WiMax; channel estimation; error statistics; fading channels; mean square error methods; mobile radio; BER; IEEE 802.16e; MSE; SIR; bit error rate; cluster structure; cluster-based channel estimation method; fading channels; mean square error; signal-to-interference ratio; Bit error rate; Channel estimation; Computational complexity; Computational modeling; Fading; Frequency conversion; Information science; Interpolation; Maximum likelihood estimation; Mean square error methods;
Conference_Titel :
Signal Processing, 2006 8th International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-9736-3
Electronic_ISBN :
0-7803-9736-3
DOI :
10.1109/ICOSP.2006.345858
