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arXiv · 2505.08432

Low-complexity Detection for Noncoherent Massive MIMO Communications

Marc Vilà-Insa·Jaume Riba
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Abstract

This work studies a point-to-point MIMO uplink in which user equipment transmits data to a base station employing a massive array. Signal detection is noncoherent and fading is assumed to follow the Weichselberger model. By exploiting the spatial stationarity of fading at the base station, a cyclostationary structure emerges naturally in the space-time representation, which suggests formulating the statistical properties of the received signal in the Karhunen-Lo\`eve domain. This allows the derivation of a low-complexity receiver that approximates maximum likelihood detection even for a moderate array size. The spectral analysis of the problem provides valuable insights on the design of space-time codewords.

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Marc Vilà-Insa, Jaume Riba. 2025-05-13. Low-complexity Detection for Noncoherent Massive MIMO Communications. https://doi.org/10.1186/s13634-025-01291-y

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