Title :
Performance Analysis of Fixed Gain Relay Systems With a Single Interferer in Nakagami-
Fading Channels
Author :
Suraweera, Himal A. ; Michalopoulos, Diomidis S. ; Yuen, Chau
Author_Institution :
Singapore Univ. of Technol. & Design, Singapore, Singapore
fDate :
3/1/2012 12:00:00 AM
Abstract :
We investigate the outage probability and average bit error rate (BER) of a dual-hop fixed gain relaying system in the presence of interference and noise at the relay and destination. Our analysis assumes Nakagami-m fading for the source-relay, relay-destination, and interfering channels. We present new closed-form/series expressions for the outage probability, as well as the average BER. It is concluded that the presence of interference results in a floor point in both outage and BER performance. This floor point holds for signal-to-noise ratio (SNR) values higher than a certain threshold such that the larger the difference between the received powers of the useful and interfering signals, the higher the SNR value at which this floor point commences. Moreover, it is shown that the performance is practically not affected by the Nakagami-m shape parameter of the fading at the interfering link.
Keywords :
Nakagami channels; error statistics; probability; BER; Nakagami-m fading channels; SNR; bit error rate; closed-form-series expressions; dual-hop fixed gain relaying system; outage probability; relay-destination; signal-to-noise ratio; single interferer; source-relay; Bit error rate; Interference; Lead; Rayleigh channels; Relays; Signal to noise ratio; Amplify and forward (AF); Nakagami fading; bit error rate (BER); cochannel interference; outage probability; wireless relays;
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2012.2184311