Design of Link-Selection Strategies for Buffer-Aided DCSK-SWIPT Relay System
Design of Link-Selection Strategies for Buffer-Aided DCSK-SWIPT Relay System
复制标题
缓冲器辅助DCSK-SWIPT中继系统链路选择策略的设计
DOI：
10.1109/tcomm.2020.3009650
复制
发表时间：
2020-04
影响因子：
8.3
通讯作者：
Han Guojun
中科院分区：
文献类型：
--
作者：
Qian Mi;Cai Guofa;Fang Yi;Han Guojun
与采用固定传输准则的传统中继相比，缓存辅助中继的自适应链路选择可以获得显著的性能提升。然而，现有的大多数链路选择策略都是基于完美信道状态信息(CSI)设计的，需要使用信道估计器，这是非常复杂的。为了解决这一问题，本文研究了一种基于缓冲区辅助差分混沌键控的同时无线信息和功率传输(DCSK-SWIPT)中继系统，该系统考虑了译码转发协议，并且中继器配备了数据缓存器和能量缓存器。特别是，我们提出了两种基于收获能量的链路选择协议：数据缓存状态和能量短缺状态，其中用收获能量代替CSI以避免信道估计，并考虑了中继端的译码开销这一实际问题。在此基础上，推导了该协议在多径瑞利衰落信道下的误码率和平均时延的闭合表达式，并通过仿真进行了验证。结果表明，这两种协议不仅比传统的DCSK系统和DCSK-SWIPT中继系统具有更好的误码率性能，而且与传统的基于信噪比的DCSK-SWIPT中继系统相比，具有更好的误码率性能和更低的平均时延。
Adaptive link selection for buffer-aided relaying can achieve significant performance gain compared with the conventional relaying with fixed transmission criterion. However, most of the existing link-selection strategies are designed based on perfect channel state information (CSI), which are very complex by requiring channel estimator. To solve this issue, in this paper, we investigate a buffer-aided differential chaos-shift-keying based simultaneous wireless information and power transfer (DCSK-SWIPT) relay system, where a decode-and-forward protocol is considered and the relay is equipped with a data buffer and an energy buffer. In particular, we propose two link-selection protocols for the proposed system based on harvested energy, data-buffer status and energy-shortage status, where the CSI is replaced by the harvested energy to avoid the channel estimation and the practical problem of the decoding cost at the relay is considered. Furthermore, the bit-error-rate (BER) and average-delay closed-form expressions of the proposed protocols are derived over multipath Rayleigh fading channels, which are validated via simulations. Finally, results demonstrate that both the proposed protocols not only provide better BER performance than the conventional DCSK system and DCSK-SWIPT relay system but also achieve better BER performance and lower average delay in comparison to the conventional signal-to-noise-ratio-based buffer-aided DCSK-SWIPT relay systems.
登录
查看更多内容
影响因子：
10.4
作者：
T. Islam;D. Michalopoulos;R. Schober;V. Bhargava
通讯作者：
T. Islam;D. Michalopoulos;R. Schober;V. Bhargava
带缓冲器的射频能量采集无线体域网的中继选择
影响因子：
10.6
作者：
Sui Dan;Hu Fengye;Zhou Wei;Shao Meiqi;Chen Minghui
通讯作者：
Chen Minghui
影响因子：
35.6
作者：
Nikolaos Nomikos;Themistoklis Charalambous;I. Krikidis;D. Skoutas;D. Vouyioukas;M. Johansson;C. Skianis-C.-Skia
通讯作者：
Nikolaos Nomikos;Themistoklis Charalambous;I. Krikidis;D. Skoutas;D. Vouyioukas;M. Johansson;C. Skianis-C.-Skia
载波索引差分混沌移键控调制的 SWIPT 方案：对非活动载波的新看法
影响因子：
6.8
作者：
Cheng Guixian;Xu Weikai;Chen Chen;Wang Lin
通讯作者：
Wang Lin
影响因子：
10.6
作者：
Guntupalli, Lakshmikanth;Gidlund, Mikael;Li, Frank Y.
通讯作者：
Li, Frank Y.