基于迭代分组均衡的SC-FDMA-IDMA非正交多址接入系统

刘德良; 黄强; 徐大专

doi:10.3969/j.issn.1000-436x.2014.08.007

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基于迭代分组均衡的SC-FDMA-IDMA非正交多址接入系统

学术论文 | 更新时间：2024-10-11

- 基于迭代分组均衡的SC-FDMA-IDMA非正交多址接入系统
- Non-orthogonal multiple-access system SC-FDMA-IDMA with iterative block equalization
- 通信学报 2014年35卷第8期页码：48-55
- 作者机构：
  
  1. 中国人民解放军理工大学通信工程学院，江苏南京 210007
  2. 南京航空航天大学信息科学与技术学院，江苏南京 210007
  3. 中国电子科技集团第二十八研究所，江苏南京 210007
- 作者简介：
  
  [ "刘德良（1976-），男，湖南湘阴人，博士，中国人民解放军理工大学讲师，主要研究方向为通信抗干扰、高速无线通信、多用户MIMO通信。" ]
  [ "黄强（1965-），男，浙江海宁人，中国电子科技集团第二十八研究所副总工程师、研究员级高级工程师，主要研究方向为通信抗干扰、联合战术无线通信。" ]
  [ "徐大专（1963-），男，江苏盐城人，南京航空航天大学教授、博士生导师，主要研究方向为通信信号处理、MIMO无线通信、认知无线电等。" ]
- 基金信息：
  
  国家自然科学基金资助项目;The National Natural Science Foundation of China(61301157)
- DOI：10.3969/j.issn.1000-436x.2014.08.007
  中图分类号： TN911
- 网络出版日期：2014-08，
  
  纸质出版日期：2014-08-25
- 稿件说明：
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刘德良, 黄强, 徐大专. 基于迭代分组均衡的SC-FDMA-IDMA非正交多址接入系统[J]. 通信学报, 2014,35(8):48-55.

De-liang LIU, Qiang HUANG, Da-zhuan XU. Non-orthogonal multiple-access system SC-FDMA-IDMA with iterative block equalization[J]. Journal on communications, 2014, 35(8): 48-55.
刘德良, 黄强, 徐大专. 基于迭代分组均衡的SC-FDMA-IDMA非正交多址接入系统[J]. 通信学报, 2014,35(8):48-55. DOI： 10.3969/j.issn.1000-436x.2014.08.007.

De-liang LIU, Qiang HUANG, Da-zhuan XU. Non-orthogonal multiple-access system SC-FDMA-IDMA with iterative block equalization[J]. Journal on communications, 2014, 35(8): 48-55. DOI： 10.3969/j.issn.1000-436x.2014.08.007.

摘要

SC-FDMA-IDMA非正交多址接入结合了SC-FDMA和IDMA 2种技术，这种结合使SC-FDMA-IDMA有可能继承这2种技术各自不同的优点，例如容量大、峰平功率比（PAPR）低、多用户信号检测简单等。但由于用户信号采用SC-FDMA这种特殊的单载波调制方式进行传输，当信道的频率选择性比较严重时，系统性能将快速下降。为此推导了适应于SC-FDMA-IDMA系统的迭代分组判决反馈均衡（IB-DFE）算法，以提高系统抗频率选择性衰落的能力。仿真研究表明，采用IB-DFE均衡算法后，相对于采用高阶调制的单用户SC-FDMA系统，在相同的传输效率下采用低阶调制的多用户SC-FDMA-IDMA系统的性能有了很大的提高。

Abstract

As a new non-orthogonal multiple-access scheme

SC-FDMA-IDMA combines two technologies of SC-FDMA and IDMA together. This combination makes SC-FDMA-IDMA have the probability to inherit different advantages of these two technologies such as large system capacity

low peak-to-average power ratio (PAPR) and simple multiuser de-tection. However

because SC-FDMA for the transmission of different users' signal is a special form of single carrier modulation

the system performance may degrade quickly when the frequency selectivity of channel is serious. So the it-erative block decision feedback equalization (IB-DFE) algorithm applied to the SC-FDMA-IDMA system is derived in order to enhance the ability of anti-frequency selective fading. Simulation results show that comparing with the sin-gle-user SC-FDMA system with high-order modulation

the multiuser SC-FDMA-IDMA system with low-order modula-tion has great performance improvement after adopting the IB-DFE algorithm on condition that these two systems have the same transmission efficiency.

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references

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