ZF and MMSE Detectors Performances Analysis of A Massive MIMO System
Journal Title: Libyan Journal of Engineering Science and Technology - Year 2023, Vol 3, Issue 2
Abstract
In the past few decades, as one of the key technologies to improve spectrum efficiency, multiple input multiple output (MIMO) systems have been extensively studied. Compared with traditional signal detection using maximum likelihood detector, linear detectors such as MMSE detector and ZF detector are most commonly used for MIMO detection due to the relatively lower complexity and near-optimal performances. However, with the increasing number of antennas in massive MIMO systems, the computational complexity of traditional linear detectors increases rapidly. Therefore, different approximate methods are proposed in the literature. In this paper, we first studied MMSE and ZF detectors in a 2×2 small-scale MIMO system. Then we apply the MMSE detector to massive MIMO systems using M-QAM modulation and frequency flat and channel model with several different approximation methods to reduce the computational complexity
Authors and Affiliations
Mohamed Elshebani ¹, Yahya Ali ² and Hawa Ayad ³
Keywords
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