紧凑空间下大规模数字相控阵混合ADC接收机性能分析  

Performance Analysis of Large-Scale Digital Phased Array Mixed-ADC Receiver in Compact Space

作　　者：张毅 高航 马松 郭鸿儒 夏斌[2] 张朝贤[3] ZHANG Yi;GAO Hang;MA Song;GUO Hongru;XIA Bin;ZHANG Chaoxian(Southwest China Institute of Electronic Technology,Chengdu 610036,China;School of Electronic Information and Electrical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Xiamen University Tan Kah Kee College,Zhangzhou 363105,China)

机构地区：[1]中国西南电子技术研究所,四川成都610036 [2]上海交通大学电子信息与电气工程学院,上海200240 [3]厦门大学嘉庚学院,福建漳州363105

出　　处：《天地一体化信息网络》2024年第3期28-34,共7页Space-Integrated-Ground Information Networks

基　　金：国家自然科学基金资助项目(No.62131005)。

摘　　要：针对紧凑空间互耦效应影响下的大规模数字相控阵混合ADC接收机性能评估问题,提出一种混合ADC接收机性能分析方法。首先,通过联合考虑三维信道模型、互耦效应模型和ADC量化噪声模型,对互耦效应影响下的传播信道进行建模;然后,采用线性最大比合并接收机,基于随机矩阵理论,推导给定天线阵列拓扑结构下系统可达速率的闭式表达式;最后,分别对均匀线性阵列、均匀平面阵列在不同混合ADC配置方案下的可达速率进行理论计算和数值仿真。计算与仿真结果均表明优化混合ADC配置方案可以有效提升系统可达速率,该结论可以为紧凑空间下高可达速率的混合ADC接收机设计提供理论支撑。In order to evaluate the performance of large-scale digital phased array mixed-ADC receivers under the influence of mutual coupling effects in compact spaces,a performance analysis method was proposed.Firstly,the propagation channel under the influence of mutual coupling effects was modeled by jointly considering the three-dimensional channel model,mutual coupling effect model,and ADC quantization noise model.Then,used a linear maximum ratio combining receiver and based on random matrix theory,a closed form expression for the achievable rate of the system under a given antenna array topology was derived.Finally,the achievable rates of uniform linear arrays and uniform planar arrays under different mixed-ADC configurations were theoretically calculated and numeri‐cally simulated.The calculation and simulation results both indicated that optimizing the mixed-ADC configuration scheme could effec‐tively improve the system achievable rate,and the conclusion could provide theoretical support for the design of high achievable rate mixed-ADC receivers in compact spaces.

关 键 词：大规模数字相控阵 紧凑空间 互耦效应 可达速率 

分 类 号：TN929.52[电子电信—通信与信息系统]