| MIMO模型下的多元混合调制DCSK方案 |
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| 引用本文： | 陈晓婷,王年,丁大为,张公泉,卢宇. MIMO模型下的多元混合调制DCSK方案[J]. 系统工程与电子技术, 2021, 43(7): 1989-1994. DOI: 10.12305/j.issn.1001-506X.2021.07.31 |
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| 作者姓名： | 陈晓婷 王年 丁大为 张公泉 卢宇 |
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| 作者单位： | 1. 安徽大学电子信息工程学院, 安徽 合肥 2306012. 合肥师范学院电子信息系统仿真设计安徽省重点实验室, 安徽 合肥 230601 |
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| 基金项目： | 国家自然科学基金青年科学基金(61501002);电子信息系统仿真设计安徽省重点实验室开放基金(合肥师范学院)(2020ZDSYSYB07) |
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| 摘 要： | 为了提升多输入多输出差分混沌移位键控(multiple input multiple output difference chaotic shift keying,MIMO-DCSK)系统的误码性能,提出一种多元混合调制MIMO-DCSK方案(M-ary hybrid modulation MIMO-DCSK,MHM-...
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| 关 键 词： | 差分混沌移位键控 多输入多输出 多元混合调制 比特误码率 |
| 收稿时间： | 2020-09-14 |
M-ary hybrid modulation DCSK scheme in MIMO model |
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| Xiaoting CHEN,Nian WANG,Dawei DING,Gongquan ZHANG,Yu LU. M-ary hybrid modulation DCSK scheme in MIMO model[J]. System Engineering and Electronics, 2021, 43(7): 1989-1994. DOI: 10.12305/j.issn.1001-506X.2021.07.31 |
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| Authors: | Xiaoting CHEN Nian WANG Dawei DING Gongquan ZHANG Yu LU |
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| Affiliation: | 1. College of Electronic Information Engineering, Anhui University, Hefei 230601, China2. Anhui Province Key Laboratory of Simulation and Design for Electronic Information System, Hefei Normal University, Hefei 230601, China |
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| Abstract: | In order to improve the bit error rate performance of multiple input multiple output difference chaotic shift keying (MIMO-DCSK) system, an M-ary hybrid modulation MIMO-DCSK (MHM-MIMO-DCSK) is proposed. Firstly, multi bit information in one frame is split and modulated by chaotic spread spectrum code and index code respectively to achieve higher transmission efficiency. Secondly, the receiver uses the quasi-orthogonal property of chaotic sequence to eliminate interference of multi antenna and multi channel. Finally, the results of correlation calculation at each receiving antenna are superimposed by the equal gain combining algorithm, so as to obtain the full diversity gain of multi-path MIMO system without channel state information. Simulation results show that the proposed MHM-MIMO-DCSK has better BER performance than the existing M-ary MIMO-DCSK, especially in the case of high-order modulation. |
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| Keywords: | differential chaotic shift keying (DCSK) multiple input multiple output (MIMO) M-ary hybrid modulation bit error rate (BER) |
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