Achievable rate maximization for decode-and-forward mimo–ofdm networks with an energy harvesting relay
文献类型：期刊论文
| 作者 | Du,Guanyao; Yu,Jianjun |
| 刊名 | Springerplus
 |
| 出版日期 | 2016-05-17 |
| 卷号 | 5期号:1 |
| 关键词 | Energy harvesting (eh) Simultaneous wireless information and power transfer (swipt) Mimo–ofdm Decode-and-forward (df) Augmented lagrangian penalty function (alpf) |
| ISSN号 | 2193-1801 |
| DOI | 10.1186/s40064-016-2203-8 |
| 通讯作者 | Yu,jianjun(yujj@cnic.ac.cn) |
| 英文摘要 | Abstractthis paper investigates the system achievable rate for the multiple-input multiple-output orthogonal frequency division multiplexing (mimo–ofdm) system with an energy harvesting (eh) relay. firstly we propose two protocols, time switching-based decode-and-forward relaying (tsdfr) and a flexible power splitting-based df relaying (psdfr) protocol by considering two practical receiver architectures, to enable the simultaneous information processing and energy harvesting at the relay. in psdfr protocol, we introduce a temporal parameter to describe the time division pattern between the two phases which makes the protocol more flexible and general. in order to explore the system performance limit, we discuss the system achievable rate theoretically and formulate two optimization problems for the proposed protocols to maximize the system achievable rate. since the problems are non-convex and difficult to solve, we first analyze them theoretically and get some explicit results, then design an augmented lagrangian penalty function (alpf) based algorithm for them. numerical results are provided to validate the accuracy of our analytical results and the effectiveness of the proposed alpf algorithm. it is shown that, psdfr outperforms tsdfr to achieve higher achievable rate in such a mimo–ofdm relaying system. besides, we also investigate the impacts of the relay location, the number of antennas and the number of subcarriers on the system performance. specifically, it is shown that, the relay position greatly affects the system performance of both protocols, and relatively worse achievable rate is achieved when the relay is placed in the middle of the source and the destination. this is different from the mimo–ofdm df relaying system without eh. moreover, the optimal factor which indicates the time division pattern between the two phases in the psdfr protocol is always above 0.8, which means that, the common division of the total transmission time into two equal phases in previous work applying ps-based receiver is not optimal. |
| 语种 | 英语 |
| WOS记录号 | BMC:10.1186/S40064-016-2203-8 |
| 出版者 | Springer International Publishing |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2374158 |
| 专题 | 计算机网络信息中心 |
| 通讯作者 | Yu,Jianjun |
| 作者单位 | Chinese Academy of Sciences; Computer Network Information Center |
| 推荐引用方式 GB/T 7714 | Du,Guanyao,Yu,Jianjun. Achievable rate maximization for decode-and-forward mimo–ofdm networks with an energy harvesting relay[J]. Springerplus,2016,5(1). |
| APA | Du,Guanyao,&Yu,Jianjun.(2016).Achievable rate maximization for decode-and-forward mimo–ofdm networks with an energy harvesting relay.Springerplus,5(1). |
| MLA | Du,Guanyao,et al."Achievable rate maximization for decode-and-forward mimo–ofdm networks with an energy harvesting relay".Springerplus 5.1(2016). |
入库方式： iSwitch采集
来源：计算机网络信息中心
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