A 0.25–1.7-GHz, 3.9–13.7-mW Power-Scalable, −10-dBm Harmonic Blocker-Tolerant Mixer-First RF-to-Digital Receiver for Massive MIMO Applications
A 0.25–1.7-GHz, 3.9–13.7-mW Power-Scalable, −10-dBm Harmonic Blocker-Tolerant Mixer-First RF-to-Digital Receiver for Massive MIMO Applications
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适用于大规模 MIMO 应用的 0.25–1.7GHz、3.9–13.7mW 功率可扩展、−10dBm 谐波阻塞容混频器首个射频数字接收器
DOI：
10.1109/lssc.2018.2813010
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发表时间：
2018
影响因子：
2.7
通讯作者：
E. Alon
中科院分区：
文献类型：
--
作者：
Konstantin Trotskovsky;A. Whitcombe;G. LaCaille;A. Puglielli;Pengpeng Lu;Zhongkai Wang;Nathan Narevsky;G. Wright;A. Niknejad;B. Nikolić;E. Alon
为了具有成本效益和能量效率，大规模多输入多输出（MIMO）阵列必须由具有低功率和高线性度的无线电元件构成，但可以容忍比传统的独立无线电更高的噪声。这封信提出了一个低功耗0.25-1.7 GHz的功率和分辨率可扩展的混频器优先接收机的可变元素的大规模MIMO系统与数字波束成形。该接收器包括可调混频器尺寸和谐波复合，功耗为3.0-12.1 mW（1 GHz时），噪声系数（NF）为13.6-19 dB，同时允许−10 dBm的附近/谐波阻断器。两个可扩展的0.4-0.8-mW、7.0-9.1-ENOB、80-MS/s SAR模数转换器构成RF-数字接收器。当用于大型阵列时，这种可配置接收器可以利用阵列级噪声平均来保持几乎恒定的阵列级功耗和NF，即使阵列大小从16个元件增加到64个元件，同时保持良好的线性度。
To be cost-effective and energy-efficient, massive multiple-input multiple-output (MIMO) arrays must be constructed from radio elements with low power and high linearity, but can tolerate higher noise than conventional stand-alone radios. This letter presents a low-power 0.25–1.7-GHz power- and resolution-scalable mixer-first receiver tailored for variable-element massive MIMO systems with digital beamforming. The receiver includes tunable mixer size and harmonic recombination, dissipates 3.0–12.1 mW (at 1 GHz) with 13.6–19-dB noise figure (NF) while tolerating −10 dBm nearby/harmonic blockers. Two scalable 0.4–0.8-mW, 7.0–9.1-ENOB, 80-MS/s SAR analog-to-digital converters complete the RF-to-digital receiver. When used in large arrays, this configurable receiver can utilize array-level noise averaging to maintain nearly constant array-level power consumption and NF even as the array size grows by a factor of four from 16 to 64 elements, while maintaining good linearity.