Optimal Power Allocation for Two-Way Decode-and-Forward OFDM Relay Networks
Abstract
This paper presents a novel two-way decode-and-forward (DF) relay strategy for Orthogonal Frequency Division Multiplexing (OFDM) relay networks. This DF relay strategy employs multi-subcarrier joint channel coding to leverage frequency selective fading, and thus can achieve a higher data rate than the conventional per-subcarrier DF relay strategies. We further propose a low-complexity, optimal power allocation strategy to maximize the data rate of the proposed relay strategy. Simulation results suggest that our strategy obtains a substantial gain over the per-subcarrier DF relay strategies, and also outperforms the amplify-and-forward (AF) relay strategy in a wide signal-to-noise-ratio (SNR) region.
Cite
@article{arxiv.1109.6845,
title = {Optimal Power Allocation for Two-Way Decode-and-Forward OFDM Relay Networks},
author = {Fei He and Yin Sun and Xiang Chen and Limin Xiao and Shidong Zhou},
journal= {arXiv preprint arXiv:1109.6845},
year = {2016}
}
Comments
5 pages, 2 figures, accepted by IEEE ICC 2012