Finite Block-length Analysis of Large-but-finite MIMO Systems

Behrooz Makki, Tommy Svensson, Mikael Coldrey, Mohamed-Slim Alouini

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


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.
Original languageEnglish (US)
Pages (from-to)113-116
Number of pages4
JournalIEEE Wireless Communications Letters
Issue number1
StatePublished - Jul 26 2018


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