Performance Analysis of Fixed Gain Relay Systems With a Single Interferer in Nakagami- m Fading Channels

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...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 2012-03, Vol.61 (3), p.1457-1463
Main Authors: Suraweera, H. A., Michalopoulos, D. S., Yuen, C.
Format: Article
Language:English
Subjects:
Access methods and protocols, osi model
Amplify and forward (AF)
Applied sciences
Bit error rate
bit error rate (BER)
Channels
cochannel interference
Connection and protection apparatus
Electrical engineering. Electrical power engineering
Electrical power engineering
Exact sciences and technology
Fading
Gain
Interference
Lead
Mathematical analysis
Nakagami fading
Operation. Load control. Reliability
outage probability
Outages
Power networks and lines
Rayleigh channels
Relay systems
Relaying
Relays
Signal to noise ratio
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Teleprocessing networks. Isdn
Transmission and modulation (techniques and equipments)
wireless relays
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Summary: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.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2012.2184311