Title :
BER Enhancement of MIMO-OFDM Using an Optimized NLMS Receiver
Author :
Ahmed, M.A. ; Jimaa, S.A. ; Abualhaol, I.
Author_Institution :
ECE Dept., Khalifa Univ. of Sci., Technol. & Res., Sharjah, United Arab Emirates
Abstract :
In wireless communications, multi-channel transmission is utilized to obtain high capacity and better throughput efficiency. Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) is considered as a spectrally efficient approach to achieve high throughput communications. This paper investigates the performance of the MIMO-OFDM system using a NLMS adaptive receiver. The performances of using various values of the NLMS algorithm´s step-size were investigated and an optimum value was chosen, based on a trade-off between the convergence speed and the steady state Mean-Square-Error (MSE). Then, the bit error rate (BER) performance of the proposed NLMS adaptive receiver is compared with that of the conventional receiver.
Keywords :
MIMO communication; OFDM modulation; error statistics; mean square error methods; radio receivers; BER enhancement; BER performance; MIMO-OFDM system; MSE; NLMS adaptive receiver; NLMS algorithm; bit error rate; multiple-input multiple-output; optimized NLMS receiver; orthogonal frequency division multiplexing; steady state mean-square-error; Adaptation models; Adaptive filters; Bit error rate; Convergence; OFDM; Receivers; Vectors; Adaptive Filter; MIMO OFDM; NLMS; Step-Size;
Conference_Titel :
Modelling Symposium (AMS), 2012 Sixth Asia
Conference_Location :
Bali
Print_ISBN :
978-1-4673-1957-7
DOI :
10.1109/AMS.2012.38
