Abstract

In this paper, the focus is to obtain performance of a multiple input and single output (MISO) wireless communication system in a real-time scenarios of time division duplex (TDD) and frequency division duplex (FDD). We consider a MISO system equipped with 2N transmit antennas. In the total N pairs of antenna, there is a spatial correlation in each pair (two antennas) only. We assume quasi-static Rayleigh fading channels. We select one pair of antennas with the highest channel power gain. In case of FDD, we assume antenna selection and detection, both based on imperfect channel state information (CSI), whereas in case of TDD, detection is based on imperfect CSI, but antenna selection is to be done using perfect CSI. Finally, we use Alamouti transmit diversity. For this system, we present the performance in terms of bit error rate (BER) versus avg. signal-to-noise ratio (SNR) and outage probability versus avg. SNR using Monte Carlo simulations. We have seen the adverse effect of spatial correlation and imperfect CSI on the performance. We conclude that TDD outperforms the FDD due to higher antenna selection gain.

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