非对称成对载波多址接入系统下行链路中的功率分配优化

刘爱军; 宫立平; 韩晨; 高志祥; 林鑫

doi:10.11999/JEIT230799

非对称成对载波多址接入系统下行链路中的功率分配优化

doi: 10.11999/JEIT230799

1.
中国人民解放军陆军工程大学南京 210007
2.
国防科技大学第六十三研究所南京 210007

基金项目: 国家重点研发计划(2018YFB1801103)，江苏省前沿引领技术基础研究项目(BK20192002)，国家自然科学基金(61901516, 62171466, 62201593)，国防科技大学科研计划(ZK22-08)

详细信息

作者简介:
刘爱军：男，博士，教授，研究方向为卫星通信、信号处理、空间异构网络、信道编码和信息论等

宫立平：男，硕士生，研究方向为卫星通信

韩晨：男，博士，工程师，研究方向为天地一体化信息网络、通信抗干扰

高志祥：男，博士，研究方向为卫星通信

林鑫：男，博士生，研究方向为战术通信、车联网技术等

通讯作者:
宫立平　 gonglp_cn@163.com

中图分类号: TN927.2
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- 被引次数: 0
出版历程
- 收稿日期: 2023-08-01
- 修回日期: 2023-10-10
- 网络出版日期: 2023-10-25
- 刊出日期: 2023-11-28

Power Allocation Optimization in the Downlink of Asymmetric Paired Carrier Multiple Access Systems

1.
Army Engineering University of PLA, Nanjing 210007, China
2.
The 63th Institute, National University of Defense Technology, Nanjing 210007, China

Funds: The National Key Research and Development Program of China (2018YFB1801103), The Natural Science Foundation on Frontier Leading Technology Basic Research Project of Jiangsu Province (BK20192002), The National Natural Science Foundation of China (61901516, 62171466, 62201593), The Research Program of National University of Defense Technology (ZK22-08)

摘要

摘要: 为提高卫星通信系统的和速率，该文研究了非对称成对载波多址接入(APCMA)系统下行链路的功率分配问题。以最大化系统和速率为目标，在总功率和满足各用户最低服务质量的约束下，通过凸优化的方法，得到了最优功率分配方案，并给出了两种次优功率分配方案。该文以正交多址接入(OMA)中的经典算法作为对比，仿真结果表明，所提功率方案能够最大化和速率，展示了APCMA系统相比OMA系统在频谱效率方面有更优性能。
- 卫星通信 /
- 非对称成对载波多址接入 /
- 和速率 /
- 功率分配 /
- 服务质量
Abstract: In order to improve the sum rate in the satellite communication system, power allocation in downlink of Asymmetric Paired Carrier Multiple Access (APCMA) system is investigated. Under the constraint of total power and the minimum quality of service for each user, the optimal power allocation scheme is obtained via the methods of convex optimization with the objective of maximizing the sum capacity, and two suboptimal power allocation schemes are given. Compared with the classic algorithm in Orthogonal Multiple Access (OMA), the simulation results show that the proposed scheme in APCMA maximizes the sum rate, and has superior performance in spectral efficiency.
- Satellite communication /
- Asymmetric Paired Carrier Multiple Access (APCMA) /
- Sum capacity /
- Power allocation /
- Quality of Service(QoS)

HTML全文

图 1 下行链路示意图

下载: 全尺寸图片幻灯片

图 2 频谱示意图

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图 3 不同功率分配方案比较

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图 4 频谱效率比较图

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表 1 非对称PCMA系统下行链路参数表

仿真参数	仿真值
载波频率	20 GHz
转发器带宽	480 MHz
噪声温度	321 K
玻尔兹曼常数	–228 dBW/(K·Hz)
卫星天线增益	54.3 dB
小站的G/T值	2.6 dB/K
中心站的G/T值	12.6 dB/K

下载: 导出CSV

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