TY - GEN
T1 - Performance analysis of dual-hop AF systems in Nakagami-m fading channels in the presence of interference
AU - Al-Qahtani, Fawaz S.
AU - Zhong, Caijun
AU - Qaraqe, Khalid A.
AU - Alnuweiri, Hussein
AU - Ratnarajah, Tharm
PY - 2011
Y1 - 2011
N2 - In this paper, we investigate the performance of a dual-hop amplify-and-forward relay system in Nakagami-m fading channels in the presence of multiple interferers. Based on the new closed-form expression for the cumulative distribution function of a new type of random variable involving a number of independent gamma random variables, we present closed-form expressions for the outage probability, general moments for the end-to-end signal to interference and noise ratio and ergodic capacity of the system. In addition, we look into the high signal to noise ratio regime and characterize the diversity order and coding gain achieved by the system. Our result shows that the diversity of the system is limited by the hop experiencing more severer fading. Moreover, the interference does not reduce the diversity order of the system, instead, it degrades the outage performance by affecting the coding gain of the system.
AB - In this paper, we investigate the performance of a dual-hop amplify-and-forward relay system in Nakagami-m fading channels in the presence of multiple interferers. Based on the new closed-form expression for the cumulative distribution function of a new type of random variable involving a number of independent gamma random variables, we present closed-form expressions for the outage probability, general moments for the end-to-end signal to interference and noise ratio and ergodic capacity of the system. In addition, we look into the high signal to noise ratio regime and characterize the diversity order and coding gain achieved by the system. Our result shows that the diversity of the system is limited by the hop experiencing more severer fading. Moreover, the interference does not reduce the diversity order of the system, instead, it degrades the outage performance by affecting the coding gain of the system.
UR - http://www.scopus.com/inward/record.url?scp=80052184732&partnerID=8YFLogxK
U2 - 10.1109/icc.2011.5963350
DO - 10.1109/icc.2011.5963350
M3 - Conference contribution
AN - SCOPUS:80052184732
SN - 9781612842332
T3 - IEEE International Conference on Communications
BT - 2011 IEEE International Conference on Communications, ICC 2011
T2 - 2011 IEEE International Conference on Communications, ICC 2011
Y2 - 5 June 2011 through 9 June 2011
ER -