Joint subcarrier-pairing and resource allocation for two-way multi-relay OFDM networks

Ke Xiong, Pingyi Fan, Khaled Letaief, Su Yi, Ming Lei

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Citations (Scopus)

Abstract

In this paper, we investigate the joint subcarrier-pairing and resource allocation scheme for multi-relay aided two-way relay OFDM networks, where power allocation, subcarriers assignment and relay selection are taken into account. It is assumed that amplify-and-forward relaying protocol is deployed on all relay nodes to assists the information exchange between two sources via orthogonal subchannels. In this case, we formulate an optimization problem to maximize the total end-to-end transmission rate of the system under individual power constraints at each node. The goal is to seek the jointly optimized subcarrier pairing, subcarrier-pair-to-relay selection and power allocation. To solve the problem, we derive an asymptotically optimal scheme by adopting the dual decomposition approach of mixed-integer programming problems. Finally, simulation results are presented to demonstrate the performance of the proposed scheme.

Original languageEnglish
Title of host publication2012 IEEE Global Communications Conference, GLOBECOM 2012
Pages4874-4879
Number of pages6
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event2012 IEEE Global Communications Conference, GLOBECOM 2012 - Anaheim, CA, United States
Duration: 3 Dec 20127 Dec 2012

Other

Other2012 IEEE Global Communications Conference, GLOBECOM 2012
CountryUnited States
CityAnaheim, CA
Period3/12/127/12/12

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Xiong, K., Fan, P., Letaief, K., Yi, S., & Lei, M. (2012). Joint subcarrier-pairing and resource allocation for two-way multi-relay OFDM networks. In 2012 IEEE Global Communications Conference, GLOBECOM 2012 (pp. 4874-4879). [6503891] https://doi.org/10.1109/GLOCOM.2012.6503891