Enhancement of Efficiency and Performance Gain of Massive MIMO System Using Trial-Based Rider Optimization Algorithm
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Enhancement of Efficiency and Performance Gain of Massive MIMO System Using Trial‑Based Rider Optimization Algorithm Satyanarayana Murthy Nimmagadda1 Accepted: 29 October 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Massive multiple-input multiple output (mMIMO) is considered as one of the most in demand and innovative technologies for the fifth-generation wireless communication systems. This paper attempts to frame a mMIMO system model, intends to improve the spectral efficiency, energy efficiency and performance gain. Here, the system performance achievements are premeditated in a multi-cell downlink mMIMO system under the core considerations such as “imperfect channel estimation, perfect channel estimation and the effect of interference among cells due to pilot sequences contamination”. The performance gains such as “spatial multiplexing gain, array gain and spatial diversity gain” are considered to maximize in this paper. For attaining this multi-objective function, an improved meta-heuristic algorithm called rider optimization algorithm (ROA) known as trial-based ROA adopted, and analyse the performance of the proposed model by comparing over existing models. Keywords Wireless communication · MIMO · Massive MIMO · Spectral efficiency · Energy efficiency
1 Introduction The fundamental technique named MIMO is for enhancing the SE from the past 20 years [1, 2]. A new method called mMIMO has been introduced to enhance both SE and EE [3–5]. The fundamental scheme of mMIMO is that multi-user interface is decreased to zero because the count of base station (BS) antennas is endless [6]7. Therefore, a huge count of Spatial Division Multiple Access (SDMA) users is supported, and significantly the high information rate is attained by an easy transceiver. In mobile cellular systems, SE is the most important performance metric. By pilot contamination, the SE of the mMIMO is effected [3]. Under multiple channel systems, the SE of huge MIMO with pilot impurity was researched. The standard SE is the only metric of the traffic load rather than the
* Satyanarayana Murthy Nimmagadda [email protected] 1
V R Siddhartha Engineering College, Vijayawada 520007, India
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density of the throughput [8–11]. The average SE of cell indicates the average SE of entire dynamic MUs in a cellular system and shows the network behaviours of the whole scheme [8]. ASE is one of the SE metrics of cell average [9]. Thus, Area Spectral Efficiency (ASE) is used to design and optimize wireless systems, for example in the choice of transmitting energy [10]. Moreover, two-way relaying acquires the advantages over one-way relaying to capture greater ability, larger lifespan of the network, and so on, while using spectrum resources efficiently [12, 13]. Two-way relay system coupled with huge MIMO is considered equally a successful approach for improving efficiency extremely, e.g. SE and EE [14–16]. The asymptotic SE and EE for particular power-scaling systems were explored
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