Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Achievable Rates and Training Overheads for a Measured LOS Massive MIMO Channel

Harris, Paul ; Hasan, Wael Boukley ; Liu, Liang LU orcid ; Malkowsky, Steffen LU ; Beach, Mark ; Armour, Simon ; Tufvesson, Fredrik LU orcid and Edfors, Ove LU orcid (2018) In IEEE Wireless Communications Letters 7(4). p.594-597
Abstract

This paper presents achievable uplink (UL) sum-rate predictions for a measured line-of-sight (LOS) massive multiple-input, multiple-output (MIMO) (MMIMO) scenario and illustrates the trade-off between spatial multiplexing performance and channel de-coherence rate for an increasing number of base station (BS) antennas. In addition, an orthogonal frequency division multiplexing (OFDM) case study is formed which considers the 90% coherence time to evaluate the impact of MMIMO channel training overheads in high-speed LOS scenarios. It is shown that whilst 25% of the achievable zero-forcing (ZF) sum-rate is lost when the resounding interval is increased by a factor of 4, the OFDM training overheads for a 100-antenna MMIMO BS using an... (More)

This paper presents achievable uplink (UL) sum-rate predictions for a measured line-of-sight (LOS) massive multiple-input, multiple-output (MIMO) (MMIMO) scenario and illustrates the trade-off between spatial multiplexing performance and channel de-coherence rate for an increasing number of base station (BS) antennas. In addition, an orthogonal frequency division multiplexing (OFDM) case study is formed which considers the 90% coherence time to evaluate the impact of MMIMO channel training overheads in high-speed LOS scenarios. It is shown that whilst 25% of the achievable zero-forcing (ZF) sum-rate is lost when the resounding interval is increased by a factor of 4, the OFDM training overheads for a 100-antenna MMIMO BS using an LTE-like physical layer could be as low as 2% for a terminal speed of 90m/s.

(Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Antennas, Coherence, Field Trials., Interference, LOS, Massive MIMO, Mobile communication, Mobility, OFDM, Signal to noise ratio, Testbed, Training
in
IEEE Wireless Communications Letters
volume
7
issue
4
pages
594 - 597
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:85041411280
ISSN
2162-2337
DOI
10.1109/LWC.2018.2799863
language
English
LU publication?
yes
id
ca1c65ad-0aad-401a-aed3-5368f21a5d15
date added to LUP
2018-02-16 07:31:57
date last changed
2024-01-29 11:32:39
@article{ca1c65ad-0aad-401a-aed3-5368f21a5d15,
  abstract     = {{<p>This paper presents achievable uplink (UL) sum-rate predictions for a measured line-of-sight (LOS) massive multiple-input, multiple-output (MIMO) (MMIMO) scenario and illustrates the trade-off between spatial multiplexing performance and channel de-coherence rate for an increasing number of base station (BS) antennas. In addition, an orthogonal frequency division multiplexing (OFDM) case study is formed which considers the 90% coherence time to evaluate the impact of MMIMO channel training overheads in high-speed LOS scenarios. It is shown that whilst 25% of the achievable zero-forcing (ZF) sum-rate is lost when the resounding interval is increased by a factor of 4, the OFDM training overheads for a 100-antenna MMIMO BS using an LTE-like physical layer could be as low as 2% for a terminal speed of 90m/s.</p>}},
  author       = {{Harris, Paul and Hasan, Wael Boukley and Liu, Liang and Malkowsky, Steffen and Beach, Mark and Armour, Simon and Tufvesson, Fredrik and Edfors, Ove}},
  issn         = {{2162-2337}},
  keywords     = {{Antennas; Coherence; Field Trials.; Interference; LOS; Massive MIMO; Mobile communication; Mobility; OFDM; Signal to noise ratio; Testbed; Training}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{594--597}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  series       = {{IEEE Wireless Communications Letters}},
  title        = {{Achievable Rates and Training Overheads for a Measured LOS Massive MIMO Channel}},
  url          = {{http://dx.doi.org/10.1109/LWC.2018.2799863}},
  doi          = {{10.1109/LWC.2018.2799863}},
  volume       = {{7}},
  year         = {{2018}},
}