Title :
Performance Analysis of V-BLAST System with Two Transmit Antennas in the Presence of Channel Estimation Error
Author :
Mingxi Guo ; Yue-hong Shen
Author_Institution :
Inst. of Commun. Eng., PLA Univ. of Sci. & Technol., Nanjing
Abstract :
The detection of V-BLAST system always requires an optimal ordering procedure, and also it requires knowledge of the channel state information (CSI) while in practice accurate CSI may not be available. In this paper, we investigate the system with two transmit antennas to evaluate its performance, considering both the effects of channel estimation error and optimal ordering procedure. Based on the modified postprocessing SNR, we derive the closed-form analytical BER expressions for MPSK and MQAM modulation at each processing stage. Monte Carlo simulations validate the analytical results and conclusions.
Keywords :
channel estimation; phase shift keying; quadrature amplitude modulation; radio networks; transmitting antennas; wireless channels; MPSK modulation; MQAM modulation; V-BLAST system; channel estimation error; channel state information; closed-form analytical BER expression; optimal ordering procedure; performance analysis; transmit antenna; Binary phase shift keying; Bit error rate; Channel estimation; Channel state information; Frequency shift keying; Interference cancellation; MIMO; Performance analysis; Programmable logic arrays; Transmitting antennas;
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.2008.160
