Title :
Spectral and energy efficiency in 3-way relay channels with circular message exchanges
Author :
Matthiesen, Bho ; Zappone, Alessio ; Jorswieck, Eduard A.
Author_Institution :
Dept. of Electr. Eng. & Inf. Technol., Tech. Univ. Dresden, Dresden, Germany
Abstract :
Spectral and energy efficiency in 3-way relay channels are studied in this paper. First, achievable sum rate expressions for 3-way relay channels are derived for different relaying protocols. Moreover, an outer bound for the capacity of the 3-way relay channel is presented. Next, leveraging the derived achievable sum rate expressions, two algorithms for joint power allocation at the users and at the relay are designed so as to maximize the system energy efficiency. Numerical results are provided to corroborate and provide insight on the theoretical findings.
Keywords :
energy conservation; protocols; relay networks (telecommunication); 3-way relay channels; achievable sum rate expressions; circular message exchanges; energy efficiency; joint power allocation; relaying protocols; spectral efficiency; Artificial neural networks; Decoding; Interference; Receivers; Relays; Signal to noise ratio; 5G networks; Multi-way networks; energy efficiency; fractional programming; relay systems; resource allocation;
Conference_Titel :
Wireless Communications Systems (ISWCS), 2014 11th International Symposium on
Conference_Location :
Barcelona
DOI :
10.1109/ISWCS.2014.6933325
