Title :
BER performance of MIMO system employing fast antenna selection scheme under imperfect Channel State Information
Author :
Wang, Feng ; Liu, Xia ; Bialkowski, Marek E.
Author_Institution :
Sch. of Inf. Technol. & Electr. Eng., Univ. of Queensland, Brisbane, QLD, Australia
Abstract :
In this paper, a closed-form expression for Bit Error rate (BER) of a Multiple-Input Multiple-Output (MIMO) system employing the Minimum Mean Square Error MMSE channel estimation method is derived. The numerical results show that when the Channel State Information (CSI) is free of estimation errors BER decreases when the number of receive antennas increases. However under imperfect CSI, BER is getting worse when the number of Rx antennas is increased. In order to improve BER, a fast antenna selection scheme is proposed. The obtained numerical results prove that the proposed antenna selection scheme indeed improves the MIMO system BER performance.
Keywords :
MIMO communication; antenna arrays; error statistics; least mean squares methods; receiving antennas; BER estimation errors; BER performance; MIMO system; MMSE; bit error rate; channel estimation method; closed-form expression; fast antenna selection scheme; imperfect CSI; imperfect channel state information; minimum mean square error method; multiple-input multiple-output system; receive antennas; Bit error rate; Channel estimation; MIMO; Modulation; Receiving antennas; Signal to noise ratio; Antenna Selection; BER; CSI; MIMO;
Conference_Titel :
Signal Processing and Communication Systems (ICSPCS), 2010 4th International Conference on
Conference_Location :
Gold Coast, QLD
Print_ISBN :
978-1-4244-7908-5
Electronic_ISBN :
978-1-4244-7906-1
DOI :
10.1109/ICSPCS.2010.5709727
