On the Performance of Transmit Antenna Selection with OSTBC in Ricean MIMO Channels
Conference paper
In this chapter, the performance of orthogonal space–time block codes (OSTBCs) with transmit antenna selection (TAS) in a Ricean fading channel is analyzed. Out of the total of L t transmit antennas, the receiver selects N antennas that maximize the received signal-to-noise ratio (SNR). A low rate feedback channel from the receiver to the transmitter is available to convey the indices of the selected transmit antennas. Bit error rate (BER) of Gray coded M-ary modulations is derived. Asymptotic performance analysis (high SNR) of the scheme is also carried out. We also present BER approximations and derive the diversity order and coding gain of the system. It is shown that the full diversity order of OSTBC is preserved in a Ricean fading environment when TAS is employed.
Key words: Antenna selection, diversity, multiple-input multiple-output systems, Ricean channel, space-time codes, bit error rate performance
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