Title :
Maximum Doppler shift frequency estimation using Autocorrelation Function for MIMO OFDM systems
Author :
Mirza, Jawad ; Ikram, Ataul Aziz ; Bajwa, Hassan
Author_Institution :
Dept. of Electr. Eng., COMSATS Inst. of Inf. Technol., Wah, Pakistan
Abstract :
In this paper, a method for estimating the maximum Doppler shift frequency is presented for Multiple Input Multiple Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) systems. This method uses the Autocorrelation Function (ACF) for estimating frequency shift that induces ICI between adjacent OFDM subcarriers. The simulation results investigate the BER performance of OFDM system that achieves transmit and receive diversity by using Alamouti/MRC, as well as the BER performance of MIMO linear detectors Zero Forcing (ZF) and Minimum Mean Square Error (MMSE) under the effect of a Doppler spread channel.
Keywords :
Doppler shift; MIMO communication; frequency division multiplexing; mean square error methods; Alamouti/MRC; MIMO OFDM systems; autocorrelation function; maximum Doppler shift frequency estimation; minimum mean square error; multiple input multiple output system; orthogonal frequency division multiplexing system; zero forcing; Diversity reception; Doppler effect; Estimation; MIMO; OFDM; Receivers; Wireless communication;
Conference_Titel :
Information and Emerging Technologies (ICIET), 2010 International Conference on
Conference_Location :
Karachi
Print_ISBN :
978-1-4244-8001-2
DOI :
10.1109/ICIET.2010.5625717
