101. Analysis of Transmit Antenna Selection/Maximal-Ratio Combining in Rayleigh Fading Channels.
- Author
-
Zhuo Chen, Jinhong Yuan, and Vucetic, Branka
- Subjects
- *
ANTENNA arrays , *ANTENNAS (Electronics) , *LARGE space structures (Astronautics) , *DEEP Space Network , *PHASED array antennas , *RAYLEIGH waves - Abstract
In this paper, we investigate a multiple-input-multiple-output (MIMO) scheme combining transmit antenna selection and receiver maximal-ratio combining (the TASIMRC scheme). In this scheme, a single transmit antenna, which maximizes the total received signal power at the receiver, is selected for uncoded transmission. The closed-form outage probability of the system with transmit antenna selection is presented. The bit error rate (BER) of the TASIMRC scheme is derived for binary phase-shift keying (BPSK) in flat Rayleigh fading channels. The BER analysis demonstrates that the TAS/MRC scheme can achieve a full diversity order at high signal-to-noise ratios (SNRs), as if all the transmit antennas were used. The average SNR gain of the TASIMRC is quantified and compared with those of uncoded receiver MRC and space-time block codes (STBCs). The analytical results are verified by simulation. It is shown that the TASIMRC scheme outperforms some more complex space-time codes of the same spectral efficiency. The cost of the improved performance is a low-rate feedback channel. We also show that channel estimation errors based on pilot symbols have no impact on the diversity order over quasi-static fading channels. [ABSTRACT FROM AUTHOR]
- Published
- 2005
- Full Text
- View/download PDF