Performance analysis comparison of transmit antenna selection with maximal ratio combining and orthogonal space time block codes in equicorrelated Rayleigh fading multiple input multiple output channels

Abstract

In this study, bit error rate (BER) performance of multiple input multiple output (MIMO) systems employing transmit antenna selection with maximal ratio combining (TAS/MRC) and orthogonal space time block codes (OSTBC) is analysed and compared. Analysis has been done for several modulation schemes in equicorrelated Rayleigh fading channels. Novel infinite series expressions for BER of TAS/MRC are proposed in this work. The authors observe that the existing literature on performance analysis of TAS/MRC in correlated channels implicitly or explicitly assume no correlation on the transmitter side. In this work the authors overcome this shortcoming. An alternate closed-form expression for BER performance of OSTBC MIMO systems is derived. This closed-form expression is computationally efficient than existing expressions. Monte Carlo simulations were performed to validate the analytical results. It has been observed that TAS/MRC outperforms OSTBC in terms of BER performance in equicorrelated Rayleigh fading channel. As a case study, performance comparison of cognitive radio (CR) links employing OSTBC and TAS/MRC MIMO systems is investigated in order to show the usefulness of the present analytical study. Even though TAS is the optimum transmit antenna technique in terms of BER performance, OSTBC seems to be a promising alternative for more realistic scenarios in CR systems.

Performance analysis of scheduled TAS‐MRC MIMO systems with multiple interferers

“…Using (10) and (14), the SER P M − PAM γ 0 of the scheduled TAS-MRC in the presence of multiple interferers is approximated as…”

“…Using (6), (14) and 24, the tight closed-form expression of P M − PSK for M-ary PSK under multiple interferers is obtained as (see (25)) Using (10), (14) and (24), the SER P M − PSK γ 0 of the scheduled TAS-MRC for the MIMO transmission over multiple interferers is approximated as…”

“…Also, MRC in [6] is the optimal linear combining technique for receive spatial diversity improvement. Thus, the combining TAS and MRC improves the transmit and receive diversity as shown in [7][8][9][10][11][12][13][14]. Moz et al [7] proposed the TAS with MRC and derived the average received signal-to-noise ratio (SNR) over Rayleigh fading channels.…”

“…Prakash et al [12] studied the impact of the feedback delay on the BER of the TAS with MRC over Rayleigh fading channels and showed the performance degradation due to outdated channel information. Pena-Martin et al [13] and Kulkarni et al [14] studied performance analysis of the TAS with MRC over Hoyt fading channels and equi-correlated Rayleigh fading channels.…”

Error Rate Analysis of MIMO System with OSTBC and MRC in Composite Weibull-Gamma Fading

“…In [7][8][9], error rate of MIMO-MRC system has been analyzed with and without noise and interference. In [10], computationally efficient bit error rate (BER) expressions have been computed for MIMO system using OSTBC and MRC with transmit antenna selection (TAS) technique in equicorrelated Rayleigh fading environment. It has been analyzed that TAS/MRC performs better than OSTBC in terms of BER.…”