IEICE Transactions on Electronics
Online ISSN : 1745-1353
Print ISSN : 0916-8524
Regular Section
A 60 GHz Hybrid Analog/Digital Beamforming Receiver with Interference Suppression for Multiuser Gigabit/s Radio Access
Koji TAKINAMI, Hiroyuki MOTOZUKA, Tomoya URUSHIHARA, Masashi KOBAYASHI, Hiroshi TAKAHASHI, Masataka IRIE, Takenori SAKAMOTO, Yohei MORISHITA, Kenji MIYANAGA, Takayuki TSUKIZAWA, Noriaki SAITO, Naganori SHIRAKATA
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Keywords: IEEE 802.11ad, WiGig, 60 GHz, direct conversion, CMOS, beamforming, interference suppression, interference rejection combining
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2016 Volume E99.C Issue 7 Pages 856-865

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Abstract

This paper presents a 60 GHz analog/digital beamforming receiver that effectively suppresses interference signals, targeting the IEEE 802.11ad/WiGig standard. Combining two-stream analog frontends with interference rejection digital signal processing, the analog beamforming steers the antenna beam to the desired direction while the digital beamforming provides gain suppression in the interference direction. A prototype has been built with 40 nm CMOS analog frontends as well as offline baseband digital signal processing. Measurements show a 3.1 dB EVM advantage over conventional two-stream diversity during a packet collision situation.

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© 2016 The Institute of Electronics, Information and Communication Engineers
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