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

Harris, Paul; Hasan, Wael Boukley; Liu, Liang LU ; Malkowsky, Steffen LU ; Beach, Mark; Armour, Simon; Tufvesson, Fredrik LU and Edfors, Ove LU (2018) In IEEE Wireless Communications Letters
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.

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author
organization
publishing date
type
Contribution to journal
publication status
epub
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
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:85041411280
ISSN
2162-2337
DOI
language
English
LU publication?
yes
id
ca1c65ad-0aad-401a-aed3-5368f21a5d15
date added to LUP
2018-02-16 07:31:57
date last changed
2018-05-29 12:13:57
@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},
  keyword      = {Antennas,Coherence,Field Trials.,Interference,LOS,Massive MIMO,Mobile communication,Mobility,OFDM,Signal to noise ratio,Testbed,Training},
  language     = {eng},
  month        = {01},
  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/},
  year         = {2018},
}