DocumentCode :
616431
Title :
Modulation optimization for green radios in cooperative networks
Author :
Yuning Wang ; Jianhua Zhang ; Ping Zhang
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing, China
fYear :
2013
fDate :
7-10 April 2013
Firstpage :
3800
Lastpage :
3805
Abstract :
Green radios have drawn much attention in recent years. This paper derives the energy per good-bit expressions for MQAM and MPSK in DF relay networks under AWGN and Rayleigh fading channels. The energy per good-bit is defined as the energy per correctly received bit, which indicates that the energy consumed per bit as well as the link reliability and retransmission probabilities are considered. An energy efficient mode switching transmission is proposed. Constrained by a given probability of bit error, the optimal constellation size of MQAM and MPSK to achieve energy efficiency is obtained. Finally, computer simulations are also carried out to analyze the energy efficiency performance with respect to system parameters such as relay position and transmission distance.
Keywords :
AWGN channels; Rayleigh channels; cooperative communication; phase shift keying; quadrature amplitude modulation; telecommunication network reliability; AWGN; DF relay networks; MPSK; MQAM; Rayleigh fading channels; bit error probability; computer simulations transmission distance; cooperative networks; energy efficiency performance; energy efficient mode switching transmission; green radios; link reliability; modulation optimization; relay position; retransmission probabilities; system parameters; AWGN channels; Bit error rate; Energy consumption; Modulation; Rayleigh channels; Relays;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communications and Networking Conference (WCNC), 2013 IEEE
Conference_Location :
Shanghai
ISSN :
1525-3511
Print_ISBN :
978-1-4673-5938-2
Electronic_ISBN :
1525-3511
Type :
conf
DOI :
10.1109/WCNC.2013.6555180
Filename :
6555180
Link To Document :
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