TY - GEN
T1 - Energy-optimized cooperative relay network over Nakagami-m fading channels
AU - Fikadu, Mulugeta K.
AU - Sofotasios, Paschalis C.
AU - Cui, Qimei
AU - Valkama, Mikko
PY - 2013
Y1 - 2013
N2 - Recently, due to the exponentially increasing overall energy consumption of the wireless networks, much attention has been directed to the energy efficiency metrics and minimization of energy consumption, both in battery powered terminal devices as well as in infrastructure devices. In this article, we present an analysis of energy-optimized cooperative network where nodes in the environment share and coordinate their resources to relay the source signal, and compare the achievable performance with the reference performance of direct transmission alone. To improve the energy-efficiency further, the optimal power allocation (OPA) scheme to minimize the energy consumption under certain quality-of-service (QoS) constraint, namely destination symbol error rate (SER), over the Nakagami-m fading channels is derived. Stemming from these derivations, we show that depending on the fading parameter m, significant performance gain can be achieved over the equal power allocation (EPA) scenario and direct transmission schemes. Moreover, the effect of relay location on the energy efficiency over the Nakagami-m fading environment is investigated.
AB - Recently, due to the exponentially increasing overall energy consumption of the wireless networks, much attention has been directed to the energy efficiency metrics and minimization of energy consumption, both in battery powered terminal devices as well as in infrastructure devices. In this article, we present an analysis of energy-optimized cooperative network where nodes in the environment share and coordinate their resources to relay the source signal, and compare the achievable performance with the reference performance of direct transmission alone. To improve the energy-efficiency further, the optimal power allocation (OPA) scheme to minimize the energy consumption under certain quality-of-service (QoS) constraint, namely destination symbol error rate (SER), over the Nakagami-m fading channels is derived. Stemming from these derivations, we show that depending on the fading parameter m, significant performance gain can be achieved over the equal power allocation (EPA) scenario and direct transmission schemes. Moreover, the effect of relay location on the energy efficiency over the Nakagami-m fading environment is investigated.
KW - cooperative communications
KW - decode-and-forward
KW - Energy efficiency
KW - Nakagami-m fading channels
KW - power allocation
KW - quality of the service
KW - relay transmission
UR - http://www.scopus.com/inward/record.url?scp=84891713435&partnerID=8YFLogxK
U2 - 10.1109/WiMOB.2013.6673393
DO - 10.1109/WiMOB.2013.6673393
M3 - Conference contribution
AN - SCOPUS:84891713435
SN - 9781479904280
T3 - International Conference on Wireless and Mobile Computing, Networking and Communications
SP - 414
EP - 421
BT - 2013 IEEE 9th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob 2013
T2 - 2013 IEEE 9th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob 2013
Y2 - 7 October 2013 through 9 October 2013
ER -
