Finite Block-length Analysis of Large-but-finite MIMO Systems
Journal article, 2019

This letter studies the performance of point-to-point multiple-input-multiple-output (MIMO) systems in the presence of large but finite numbers of transmit and receive antennas. We use some recent results on the achievable rates of finite-length codes to analyze the system performance in the cases with short packets. The results are presented for different fading models. With codewords of finite length, we derive closed-form expressions for the error probability/throughput and determine the minimum number of antennas which are required to satisfy different error probability/throughput requirements. As we show, while the error-constrained required number of antennas is sensitive to the length of short codewords, its effect is negligible for codewords of moderate/long length.


Behrooz Makki

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Tommy Svensson

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Mikael Coldrey

Chalmers, Electrical Engineering, Signal Processing and Biomedical Engineering

Mohamed-Slim Alouini

King Abdullah University of Science and Technology (KAUST)

IEEE Wireless Communications Letters

2162-2337 (ISSN)

Vol. 8 1 113-116 8421030

Areas of Advance

Information and Communication Technology

Subject Categories


Communication Systems

Signal Processing



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4/5/2022 6