CLC number: TN925
On-line Access: 2017-02-10
Received: 2016-07-14
Revision Accepted: 2016-11-10
Crosschecked: 2017-01-03
Cited: 0
Clicked: 5993
Cheng Zhao, Wan-liang Wang, Xin-wei Yao, Shuang-hua Yang. Joint throughput and transmission range optimization for triple-hop networks with cognitive relay[J]. Frontiers of Information Technology & Electronic Engineering, 2017, 18(2): 253-261.
@article{title="Joint throughput and transmission range optimization for triple-hop networks with cognitive relay",
author="Cheng Zhao, Wan-liang Wang, Xin-wei Yao, Shuang-hua Yang",
journal="Frontiers of Information Technology & Electronic Engineering",
volume="18",
number="2",
pages="253-261",
year="2017",
publisher="Zhejiang University Press & Springer",
doi="10.1631/FITEE.1601414"
}
%0 Journal Article
%T Joint throughput and transmission range optimization for triple-hop networks with cognitive relay
%A Cheng Zhao
%A Wan-liang Wang
%A Xin-wei Yao
%A Shuang-hua Yang
%J Frontiers of Information Technology & Electronic Engineering
%V 18
%N 2
%P 253-261
%@ 2095-9184
%D 2017
%I Zhejiang University Press & Springer
%DOI 10.1631/FITEE.1601414
TY - JOUR
T1 - Joint throughput and transmission range optimization for triple-hop networks with cognitive relay
A1 - Cheng Zhao
A1 - Wan-liang Wang
A1 - Xin-wei Yao
A1 - Shuang-hua Yang
J0 - Frontiers of Information Technology & Electronic Engineering
VL - 18
IS - 2
SP - 253
EP - 261
%@ 2095-9184
Y1 - 2017
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/FITEE.1601414
Abstract: The optimization of the network throughput and transmission range is one of the most important issues in cognitive relay networks (CRNs). Existing research has focused on the dual-hop network, which cannot be extended to a triple-hop network due to its shortcomings, including the limited transmission range and one-way communication. In this paper, a novel, triple-hop relay scheme is proposed to implement time-division duplex (TDD) transmission among secondary users (SUs) in a three-phase transmission. Moreover, a superposition coding (SC) method is adopted for handling two-receiver cases in triple-hop networks with a cognitive relay. We studied a joint optimization of time and power allocation in all three phases, which is formulated as a nonlinear and concave problem. Both analytical and numerical results show that the proposed scheme is able to improve the throughput of SUs, and enlarge the transmission range of primary users (PUs) without increasing the number of hops.
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