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

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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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  • University of Bristol

Ämnesklassifikation (UKÄ) – OBLIGATORISK

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Sidor (från-till)594-597
TidskriftIEEE Wireless Communications Letters
Utgåva nummer4
Tidigt onlinedatum2018 jan 29
StatusPublished - 2018 aug
Peer review utfördJa