Title :
Simple equalization of OFDM signal over doubly selective channels
Author :
Liu, Guanghui ; Ju, Tailiang ; Wang, Zhengning ; Chen, Wei ; Xu, Linfeng
Author_Institution :
Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
In this paper, a piece-wise approximation for doubly selective channel is presented for improving the structure of the frequency-domain channel gain matrix of OFDM. The proposed model is exploited to simplify the zero-forcing (ZF) equalizer, of which the linearized case is studied and applied to the DVB-H receiver design. The simulation indicates that the developed equalizer enforces considerably the immunity of the DVB-H receiver to time selectivity with very little complexity increased.
Keywords :
OFDM modulation; approximation theory; digital video broadcasting; frequency-domain analysis; matrix algebra; wireless channels; DVB-H receiver design; OFDM signal; doubly selective channels; frequency-domain channel gain matrix; orthogonal frequency-division multiplexing; piecewise approximation; wireless channels; zero-forcing equalizer; Artificial neural networks; Complexity theory; Digital video broadcasting; Estimation; Solids;
Conference_Titel :
Intelligent Signal Processing and Communication Systems (ISPACS), 2010 International Symposium on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-7369-4
DOI :
10.1109/ISPACS.2010.5704697
