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

fYear

2014

fDate

26-29 Aug. 2014

Firstpage

85

Lastpage

89

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications Systems (ISWCS), 2014 11th International Symposium on

Conference_Location

Barcelona

Type

conf

DOI

10.1109/ISWCS.2014.6933325

Filename

6933325