Low-overhead multi-antenna-enabled random access for machine-type communications with low mobility

Yihan Zou, Kwang Taik Kim, Zhi Ding, Risto Wichman, Jyri Hämäläinen, Xiaojun Lin, Mung Chiang

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionScientificvertaisarvioitu

41 Lataukset (Pure)


A pseudo-random beamforming (PRBF) based random access (RA) system is proposed to enable uplink (UL) machine-type communications (MTC) with ultra low signaling overheads. Specifically, a pseudo random (PR) sequence is used as public information to coordinate the beamforming vectors used at the base station (BS) and the devices. Within the coherence time window, each device distributively determines in advance the ''good'' time slots and receiving beams for transmission. This UL protocol reduces the overheads due to the feedback of channel state information and the control signals for centralized scheduling. This paper derives the throughput and user scaling of the proposed M- PRBF-CA protocol for achieving spatial multiplexing gain, under both an i.i.d. slow fading channel and a correlated slow fading channel. Our simulation results confirm the analysis in both fading channel models.

Otsikko2019 IEEE Global Communications Conference, GLOBECOM 2019 - Proceedings
JulkaisupaikkaUnited States
ISBN (elektroninen)9781728109626
DOI - pysyväislinkit
TilaJulkaistu - 1 joulukuuta 2019
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaIEEE Global Communications Conference - Waikoloa, Yhdysvallat
Kesto: 9 joulukuuta 201913 joulukuuta 2019


NimiIEEE Global Communications Conference
ISSN (painettu)2334-0983


ConferenceIEEE Global Communications Conference


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