A Mm-Wave Wideband MIMO RX with Instinctual Array-Based Blocker/Signal Management for Ultralow-Latency Communication
Metadata only
Datum
2019-12Typ
- Journal Article
ETH Bibliographie
no
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Abstract
This article demonstrates a wideband mm-Wave multiple-input-multiple-output (MIMO) receiver (RX) system with cascadable array-based high-order autonomous spatial filters (ASFs) for closed-loop frontend beamforming, achieving “instinctual” (“Instinctual” is defined as an autonomous operation for sensing, controlling, processing signals with ultralow-latency and no backend digital signal processing assist.) management of multiblockers/signals with ultrafast response time. Over a full field-of-view (FoV), the ASFs achieve automatic blocker suppression and desired signal beamforming without prior knowledge on the angle-of-arrival/frequency/modulation and without beam-searching using backend computations. In particular, the ASFs realize frontend blocker suppression and substantially relax the dynamic range requirement of down-stream analog-to-digital converters (ADCs) in digital arrays. Moreover, cascading multiple ASFs can sequentially suppress multiple blockers, essentially achieving the “iterative source localization” DSP algorithm by the frontend hardware. A proof-of-concept 27-41-GHz four-element MIMO RX array is implemented in a 45-nm CMOS silicon-on-insulator (SOI) process to support multistandard 5G links in the future congested/contested electromagnetic (EM) environments. With autonomous cancellation of multiple co-channel wideband blockers, a wideband desired signal can be received with high signal-to-interference-plus-noise ratio (SINR), achieving -28.64-dB error vector magnitude (EVM) for 3-Gb/s 64QAM and -32.73-dB EVM for 0.8-Gb/s 256QAM. The measured MIMO beamforming response time for beam scanning, localization, and computation is <; 1.75 μs/stage, enabling 5G and beyond-5G ultralow-latency mm-Wave links. Mehr anzeigen
Publikationsstatus
publishedExterne Links
Zeitschrift / Serie
IEEE Journal of Solid-State CircuitsBand
Seiten / Artikelnummer
Verlag
IEEEThema
5G; Array-based spatial filter; Beamforming; Blocker rejection; Closed-loop; Field-of-view (FoV); High capacity; Iterative source localization; Low-latency milimeter-Wave; Multiple-input–multiple-output (MIMO); Phased array; Receiver (RX); Self-steeringOrganisationseinheit
09757 - Wang, Hua / Wang, Hua
ETH Bibliographie
no
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