Title :
Analysis of Transmit Antenna Selection With Switch-and-Examine Combining With Postselection at the Receiver Over Rayleigh Fading Channels
Author :
Beng Soon Tan ; Kwok Hung Li ; Kah Chan Teh
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
A diversity-combining system using transmit antenna selection at the transmitter and switch-and-examine combining with postselection (TAS/SECPS) at the receiver is proposed. This system has lower processing complexity as compared with the existing TAS schemes with maximal-ratio combining and selection combining (TAS/SC) at the receiver. The performance of the TAS/SECPS system with different modulation schemes over independent and nonidentically distributed Rayleigh fading channels is examined. The expressions of average output signal-to-noise ratio (SNR) and symbol error rate (SER) are derived and validated by simulation. It is shown that the proposed TAS/SECPS is able to achieve similar average output SNR and SER performance as compared with TAS/SC when the predetermined SNR threshold is optimized. Moreover, the TAS/SECPS requires less number of channel estimates.
Keywords :
Rayleigh channels; channel estimation; error statistics; modulation; radio receivers; radio transmitters; transmitting antennas; Rayleigh fading channels; SER; TAS-SC system; TAS-SECPS system; average output SNR; average output signal-to-noise ratio; channel estimates; maximal-ratio combining; modulation schemes; nonidentically distributed Rayleigh fading channels; receiver; switch-and-examine combining; symbol error rate; transmit antenna selection analysis; transmitter; Channel estimation; Diversity reception; Rayleigh channels; Receiving antennas; Signal to noise ratio; Transmitting antennas; Rayleigh fading; switch-and-examine combining (SEC); transmit antenna selection (TAS);
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2013.2243172
