A Resolution-Adaptive 8 mm2 9.98 Gb/s 39.7 pJ/b 32-Antenna All-Digital Spatial Equalizer for mmWave Massive MU-MIMO in 65nm CMOS

Autor:	Oscar Castaneda, Seyed Hadi Mirfarshbafan, Christoph Studer, Jamie C. Ye, Alyosha Molnar, Shimin Huang, Zachariah Boynton
Rok vydání:	2021
Předmět:	CMOS Application-specific integrated circuit Computer science Scalability Electronic engineering Throughput Converters Antenna (radio) Multi-user MIMO Communication channel
Zdroj:	ESSCIRC ESSCIRC 2021-IEEE 47th European Solid State Circuits Conference (ESSCIRC)
DOI:	10.1109/esscirc53450.2021.9567843
Popis:	All-digital millimeter-wave (mmWave) massive multi-user multiple-input multiple-output (MU-MIMO) receivers enable extreme data rates but require high power consumption. In order to reduce power consumption, this paper presents the first resolution-adaptive all-digital receiver ASIC that is able to adjust the resolution of the data-converters and baseband-processing engine to the instantaneous communication scenario. The scalable 32-antenna, 65 nm CMOS receiver occupies a total area of 8 mm^2 and integrates analog-to-digital converters (ADCs) with programmable gain and resolution, beamspace channel estimation, and a resolution-adaptive processing-in-memory spatial equalizer. With 6-bit ADC samples and a 4-bit spatial equalizer, our ASIC achieves a throughput of 9.98 Gb/s while being at least 2x more energy-efficient than state-of-the-art designs.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::deb54fcb8fda9484862d2dc1fe54ca54 https://doi.org/10.1109/esscirc53450.2021.9567843 Zobrazit plný text záznamu