Resource Allocation with Subcarrier Pairing in OFDMA Two-Way Relay Networks
Information Theory
2012-01-04 v1 math.IT
Abstract
This study considers an orthogonal frequency-division multiple-access (OFDMA)-based multi-user two-way relay network where multiple mobile stations (MSs) communicate with a common base station (BS) via multiple relay stations (RSs). We study the joint optimization problem of subcarrier-pairing based relay-power allocation, relay selection, and subcarrier assignment. The problem is formulated as a mixed integer programming problem. By using the dual method, we propose an efficient algorithm to solve the problem in an asymptotically optimal manner. Simulation results show that the proposed method can improve system performance significantly over the conventional methods.
Keywords
Cite
@article{arxiv.1201.0081,
title = {Resource Allocation with Subcarrier Pairing in OFDMA Two-Way Relay Networks},
author = {Hao Zhang and Yuan Liu and Meixia Tao},
journal= {arXiv preprint arXiv:1201.0081},
year = {2012}
}