Design of 28 GHz 64-QAM Digital Receiver
Design of 28 GHz 64-QAM Digital Receiver
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28 GHz 64-QAM 数字接收机设计
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
A. Madanayake
中科院分区：
文献类型：
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作者：
S. Pulipati;V. Ariyarathna;Udara De Silva;Najath Akram;E. Alwan;A. Madanayake
提出了一种适用于毫米波5G无线应用的MIMO+波束形成器结构。一种工作在28 GHz的-QAM数字接收机是为最终应用于正交频分复用5G链路而设计的。接收器设计采用32元线阵，850 MHz带宽足以支持512点的ofdm调制。该射频链的目标是建立一条误码率优于10−5的无线通信链路。设计过程是为了在数字解调器的输入端提供所需的信噪比。使用AWR微波办公室进行了链路预算和噪声分析，以评估系统在电路非理想和射频损伤(如噪声、失真和失配)下的性能。使用嵌入AWR微波局模型的制造商测试数据和电路参数，在非理想条件下对-QAM星座进行了模拟。给出了单接收机的仿真结果。物理实现、测量、验证和扩展到基于ofdm的32单元波束形成阵列留到以后的工作中。
This paper presents a MIMO+beamformer architecture for millimeter-wave (mmW) 5G wireless applications. A 64-QAM digital receiver operating at 28 GHz is designed for eventual applications in orthogonal frequency division multiplexing (OFDM) 5G links. The receiver design employs a 32-element linear array, with 850 MHz bandwidth sufficient to support 512-point OFDM modulation. The proposed RF chain is aimed at establishing a wireless communication link with a bit error probability better than 10−5. A design procedure is adopted to provide the required signal to noise ratio (SNR) at the input of the digital demodulator. A link budget and noise analysis has been conducted using AWR Microwave Office to evaluate the system's performance under circuit non-idealities and RF impairments, such as noise, distortion, and mismatch. The 64-QAM constellation is simulated for non-ideal conditions using manufacturer test-data and circuit parameters that are embedded into the AWR Microwave Office model. This paper presents the simulation of a single receiver. Physical implementation, measurement, verification, and extension to OFDM based 32-element beamforming arrays is reserved for future work.