Nakagami-m衰落信道下D2D通信自适应调制算法研究

曾孝平; 毛海伟; 杨凡; 简鑫; 李诗琪; 蒋欣; 方伟

doi:10.11959/j.issn.1000-436x.2018151

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Nakagami-m衰落信道下D2D通信自适应调制算法研究

论文Ⅰ：5G及认知协作网络 | 更新时间：2024-06-05

- Nakagami-m衰落信道下D2D通信自适应调制算法研究
- Study on adaptive modulation in D2D communications over Nakagami-m fading channel
- 通信学报 2018年39卷第9期页码：31-42
- 作者机构：
  
  1. 重庆大学通信工程学院，重庆 400044
  2. 重庆理工大学电气与电子工程学院，重庆 400054
  3. 北京民用飞机技术研究中心，北京 102211
- 作者简介：
  
  [ "曾孝平（1956-），男，四川广安人，博士，重庆大学教授、博士生导师，主要研究方向为航空移动通信、下一代移动通信、生物信号处理等。" ]
  [ "毛海伟（1994-），男，湖南邵阳人，重庆大学硕士生，主要研究方向为无线宽带自适应传输。" ]
  [ "杨凡（1983-），男,湖北广水人，博士，重庆理工大学副教授，主要研究方向为无线宽带自适应传输、无线通信网络、下一代移动通信技术、无线通信中的编码技术等。" ]
  [ "简鑫（1987-），男，四川自贡人，博士，重庆大学副教授，主要研究方向为统计数学、无线通信理论与技术、流量分析论等。" ]
  [ "李诗琪（1996-），女，湖北潜江人，重庆大学硕士生，主要研究方向为干扰检测。" ]
  [ "蒋欣（1970-），男，四川达州人，博士，北京民用飞机技术研究中心研究员，主要研究方向为航空电子系统综合设计技术和机载系统技术。" ]
  [ "方伟（1978-），男，山东诸城人，博士，北京民用飞机技术研究中心高级工程师，主要研究方向为航空电子系统、机载宽带通信技术等。" ]
- 基金信息：
  
  国家自然科学基金资助项目(61501065);国家自然科学基金资助项目(61571069);国家自然科学基金资助项目(61701054);国家自然科学基金资助项目(61601067);重庆市基础科学与前沿技术研究专项基金资助项目(cstc2016jcyjA0021);中央高校基本科研业务费基金资助项目(106112017CDJQJ168817);中央高校基本科研业务费基金资助项目(2018CDXYTX0009);中央高校基本科研业务费基金资助项目(2018CDYJSY0055)
- DOI：10.11959/j.issn.1000-436x.2018151
  中图分类号： TN929.5
- 网络出版日期：2018-09，
  
  纸质出版日期：2018-09-25
- 稿件说明：
移动端阅览
曾孝平, 毛海伟, 杨凡, 等. Nakagami-m衰落信道下D2D通信自适应调制算法研究[J]. 通信学报, 2018,39(9):31-42.

Xiaoping ZENG, Haiwei MAO, Fan YANG, et al. Study on adaptive modulation in D2D communications over Nakagami-m fading channel[J]. Journal on communications, 2018, 39(9): 31-42.
曾孝平, 毛海伟, 杨凡, 等. Nakagami-m衰落信道下D2D通信自适应调制算法研究[J]. 通信学报, 2018,39(9):31-42. DOI： 10.11959/j.issn.1000-436x.2018151.

Xiaoping ZENG, Haiwei MAO, Fan YANG, et al. Study on adaptive modulation in D2D communications over Nakagami-m fading channel[J]. Journal on communications, 2018, 39(9): 31-42. DOI： 10.11959/j.issn.1000-436x.2018151.

摘要

针对Nakagami-m衰落信道中，D2D（device to device）通信频谱利用率低的问题，设计一种基于非数据辅助误差矢量幅度（NDA-EVM

nondata-aided error vector magnitude）的自适应调制算法。以NDA-EVM作为信道质量评估参量，根据最大似然准则建立NDA-EVM与误码率（SER

symbol error ratio）的定量关系，据此设计SER约束下的MQAM调制方式切换机制；结合有限状态马尔可夫信道模型以及数据缓存处理，分析系统的分组丢失性能和频谱利用率。理论分析和仿真实验表明，基于NDA-EVM的自适应调制算法在不同调制方式的阈值下的准确性，明确系统QoS与分组丢失率的关系；在保持低算法复杂度的同时，提高了系统频谱利用率，对比传统算法，频谱利用率提升了0.752 bit·(s·Hz)

-1

。

Abstract

A novel adaptive modulation based on nondata-aided error vector magnitude (NDA-EVM) was proposed to solve the problem of lower spectral efficiency in device to device (D2D) communication over Nakagami-m fading channel.The NDA-EVM was used to evaluate the channel quality.The relationship between NDA-EVM and symbol error ratio (SER) was derived according to the maximum likelihood method.Thereafter

the adaptive modulation mechanism of MQAM with the SER constraint was designed.Considering the joint effect of finite-length queuing and fading channel

the system packet loss rate and spectral efficiency was analyzed.Theoretical analysis and simulation experiments show that NDA-EVM based adaptive modulation accurately gives the modulation threshold and evaluates the relationship between QoS and packet loss rate

the proposed algorithm improves system spectral efficiency while maintaining low algorithm complexity

spectral efficiency improves by 0.752 bit·(s·Hz)

-1

compared with traditional algorithm.

关键词

Keywords

references

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