NDLI: Optimal relay selections in two-way amplify-and-forward networks

Content Provider	IEEE Xplore Digital Library
Author	Chengyu Xiong Xiaohua Li
Copyright Year	2013
Description	Author affiliation: Dept. of Electr. & Comput. Eng., State Univ. of New York at Binghamton, Binghamton, NY, USA (Chengyu Xiong; Xiaohua Li)
Abstract	Two-way amplify-and-forward (AP) relay network with both cooperative communication and analog network coding (ANC) has attracted great attention. In this paper, we formulate the fundamental issue, i.e., the optimal selection of multiple AF relays in a two-way dual-hop cooperative network, into linear fractional programming (LFP) problems. Firstly, in case of channel reciprocity, by minimizing the sum of the inverse of signal-to-noise ratios (SNR), the AF relays can be selected optimally by the LFP algorithms. Moreover, we derive a closed-form solution to this case, and prove that a node either participates relaying with full transmission power, or ceases relaying. Then, for the general (possibly channel non-reciprocity) case, by maximizing the weighted sum SNR, we show that the relay selection can be optimized by the sum-of-ratios LFP algorithms. Simulations are conducted to verify the proposed results.
Sponsorship	IEEE Inf. Theory Soc.
Starting Page	1
Ending Page	5
File Size	819168
Page Count	5
File Format	PDF
ISBN	9781467352376
e-ISBN	9781467352390
e-ISBN	9781467352383
DOI	10.1109/CISS.2013.6552312
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-03-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	analog network coding Cooperative communications Abstracts signal-to-noise ratio sum-of-ratios linear fractional programming linear fractional programming two-way relaying Relays Radio access networks
Content Type	Text
Resource Type	Article

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