A cooperative diversity transmission scheme by superposition coding relaying for a wireless system with multiple relays
A cooperative diversity transmission scheme by superposition coding relaying for a wireless system with multiple relays
复制标题
一种多中继无线系统叠加编码中继协作分集传输方案
DOI：
10.1007/s11276-014-0877-9
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发表时间：
2015-01
期刊：
影响因子：
--
通讯作者：
Li Wang
中科院分区：
文献类型：
--
作者：
Yi Man;Mei Song;Hongtao Zhang;Li Wang
提出了一种基于叠加编码中继（SC-relaying）的多中继无线系统协作分集传输方案。 在该方案中，两层信号，即，在第一和第二时隙中从基站（BS）发送信号，而在第二时隙中也从多个中继转发信号到用户。两层信号（和）在第二时隙中在空中相遇并相互交织。然后，连续干扰消除（SIC）被用于在用户处进行解码。本文首先研究了使网络吞吐量和最大化的最优功率分配问题.然后推导出基站的最优中继数目和最优传输速率。最后对系统的中断概率和分集增益进行了评估.仿真结果表明，该方案实现了提高频谱利用率和增强系统鲁棒性的目标。
This paper proposes a cooperative diversity transmission scheme by superposition coding relaying (SC-relaying) for a wireless system with multiple relays. In this scheme, two layer signals, i.e., signaland, are transmitted from a base station (BS) in the first and the second time slot, while signalis also forwarded from multiple relays to a user in the second time slot. The two layer signals (and) meet and superimpose with each other in the air in the second time slot. Then successive interference cancellation (SIC) is used for decoding at the user. In this paper, the optimal power allocation that maximizes the sum throughput ofandis first studied. Then the optimal number of selected relays and optimal transmission rate at the BS is derived. Finally the outage probability and diversity gain of the transmission ofandis evaluated for system robustness. Simulation results show that the proposed scheme realizes the goal of increasing spectral efficiency and enhancing system robustness.
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影响因子：
35.6
作者：
Rong Zhang;L. Hanzo
通讯作者：
Rong Zhang;L. Hanzo
影响因子：
2.5
作者：
BERGMANS, PP
通讯作者：
BERGMANS, PP
DOI：
10.1109/milcom.2004.1494996
发表时间：
2004-10
期刊：
IEEE MILCOM 2004. Military Communications Conference, 2004.
影响因子：
--
作者：
Melda Yuksel;E. Erkip
通讯作者：
Melda Yuksel;E. Erkip
影响因子：
2.5
作者：
COVER, TM
通讯作者：
COVER, TM
影响因子：
3.7
作者：
Yuhong Yang
通讯作者：
Yuhong Yang