Accurate Analytical BER Performance for ZF Receivers Under Imperfect Channel in Low-SNR Region for Large Receiving Antennas

Most analytical work for zero-forcing (ZF) receivers are conducted for small-scale multiple-input multiple-output (MIMO) systems in large signal-to-noise ratio (SNR) region and under small channel estimation error conditions. Using large receiving antennas, systems are expected to work in the low-SN...

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Bibliographic Details
Published in:IEEE signal processing letters 2018-08, Vol.25 (8), p.1246-1250
Main Authors: Jiang, Fan, Li, Cheng, Gong, Zijun
Format: Article
Language:English
Subjects:
Analytical bit error rate (BER)
Antennas
Bit error rate
Channel estimation
Error analysis
imperfect channel
Interference
large-scale multiple-input multiple-output (MIMO)
Mathematical analysis
MIMO (control systems)
MIMO communication
Receivers
Receiving
Signal to noise ratio
Xenon
zero-forcing (ZF)
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Summary:Most analytical work for zero-forcing (ZF) receivers are conducted for small-scale multiple-input multiple-output (MIMO) systems in large signal-to-noise ratio (SNR) region and under small channel estimation error conditions. Using large receiving antennas, systems are expected to work in the low-SNR region and under large channel estimation error. In these conditions, we observe an obvious mismatch between the existing analytical results and the simulations. In this letter, we derive an accurate analytical bit error rate (BER) expression for ZF receivers under imperfect channel estimation. We show that our results match nicely with the simulations in small-scale and large-scale MIMO systems, even when large channel estimation error presents.
ISSN:1070-9908
1558-2361
DOI:10.1109/LSP.2018.2849683