Title :
Sparse Multi-Path Channel Estimation for OFDM Systems
Author :
Jiang, Chenggang ; Wan, Qun ; Gui, Guan ; Huang, Anmin
Author_Institution :
Dept. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu
Abstract :
Sparse multi-path is encountered in OFDM and Ultra-wideBand (UWB) communications. Conventional channel estimation methods ignore the prior knowledge of the sparseness, and estimates have higher MSE. We introduced two approaches: Lp norm constraint method and LASSO method which are related to Bayesian model. The two approaches exploit the sparse a priori and obtain better performance.
Keywords :
OFDM modulation; channel estimation; multipath channels; ultra wideband communication; OFDM systems; sparse multi-path channel estimation; ultra-wideband communications; Bayesian methods; Channel estimation; Digital audio broadcasting; Digital filters; Discrete Fourier transforms; Finite impulse response filter; Intersymbol interference; OFDM; Ultra wideband technology; Wireless communication;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2008. WiCOM '08. 4th International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4244-2107-7
Electronic_ISBN :
978-1-4244-2108-4
DOI :
10.1109/WiCom.2008.181
