Multi-Way Massive MIMO with Maximum-Ratio Processing and Imperfect CSI

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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341 Downloads (Pure)


This paper considers a multi-way massive multiple-input multiple-output relaying system, where single-antenna users exchange their information-bearing signals with the help of one relay station equipped with unconventionally many antennas. The relay first estimates the channels to all users through the pilot signals transmitted from them. Then, the relay uses maximum-ratio processing (i.e. maximum-ratio combining in the multiple-access phase and maximum-ratio transmission in the broadcast phase) to process the signals. A rigorous closed-form expression for the spectral efficiency is derived. The effects of the channel estimation error, the channel estimation overhead, the length of the training duration, and the randomness of the user locations are analyzed. We show that by deploying massive antenna arrays at the relay and simple maximum-ratio processing, we can serve many users in the same time-frequency resource, while maintaining a given quality-of-service for each user.
Original languageEnglish
Title of host publication25th European Signal Processing Conference (EUSIPCO): Proceedings
PublisherEuropean Signal Processing Conference, EUSIPCO
Number of pages5
ISBN (Electronic)978-0-9928626-7-1
Publication statusPublished - 26 Oct 2017
Event25th European Signal Processing Conference - Kos Island, Kos, Greece
Duration: 28 Aug 201702 Sept 2017

Publication series

NameSignal Processing Conference (EUSIPCO): Proceedings
ISSN (Print)2076-1465


Conference25th European Signal Processing Conference
Abbreviated titleEUSIPCO 2017
Internet address


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