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Uplink data detection analysis of 1-Bit quantized massive MIMO

Atzeni, Italo; Tölli, Antti (2021-11-15)

 
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URL:
https://doi.org/10.1109/SPAWC51858.2021.9593215

Atzeni, Italo
Tölli, Antti
Institute of Electrical and Electronics Engineers
15.11.2021

I. Atzeni and A. Tölli, "Uplink Data Detection Analysis of 1-Bit Quantized Massive MIMO," 2021 IEEE 22nd International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2021, pp. 371-375, doi: 10.1109/SPAWC51858.2021.9593215

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doi:https://doi.org/10.1109/SPAWC51858.2021.9593215
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https://urn.fi/URN:NBN:fi-fe202201101648
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Abstract

This paper presents an analytical framework for the data detection in massive multiple-input multiple-output uplink systems with 1-bit analog-to-digital converters (ADCs). Considering the single-user case, we provide closed-form expressions of the expected value and the variance of the estimated symbols when maximum ratio combining is adopted at the base station (BS) along with their asymptotic behavior at high signal-to-noise ratio (SNR). These results are exploited to enhance the performance of maximum likelihood detection by taking into account the dispersion of the estimated symbols about their expected values. The symbol error rate with 1-bit ADCs is evaluated with respect to the number of BS antennas, the SNR, and the pilot length used for the channel estimation. The proposed analysis highlights a fundamental SNR trade-off, according to which operating at the right SNR considerably improves the data detection accuracy.

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