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Open AccessJournal ArticleDOI

Massive MIMO With Spatially Correlated Rician Fading Channels

Ozgecan Ozdogan, +2 more
- Vol. 67, Iss: 5, pp 3234-3250
TLDR
The statistical properties of the minimum mean squared error (MMSE), element-wise MMSE, and least-square channel estimates for this model, where the channels are spatially correlated Rician fading, are derived and analyzed.
Abstract
This paper considers multi-cell massive multiple-input multiple-output systems, where the channels are spatially correlated Rician fading. The channel model is composed of a deterministic line-of-sight path and a stochastic non-line-of-sight component describing a practical spatially correlated multipath environment. We derive the statistical properties of the minimum mean squared error (MMSE), element-wise MMSE, and least-square channel estimates for this model. Using these estimates for maximum ratio combining and precoding, rigorous closed-form uplink (UL) and downlink (DL) achievable spectral efficiency (SE) expressions are derived and analyzed. The asymptotic SE behavior, when using the different channel estimators, are also analyzed. The numerical results show that the SE is higher when using the MMSE estimator than that of the other estimators, and the performance gap increases with the number of antennas.

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Citations
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On Capacity of Large-Scale MIMO Multiple Access Channels with Distributed Sets of Correlated Antennas

TL;DR: In this article, a deterministic equivalent of ergodic sum rate and an algorithm for evaluating the capacity-achieving input covariance matrices for the uplink large-scale multiple-input multiple-output (MIMO) antenna channels are proposed.
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Design, Analysis, and Optimization of a Large Intelligent Reflecting Surface-Aided B5G Cellular Internet of Things

TL;DR: The large intelligent reflecting surface (IRS) technique is applied in beyond fifth-generation (B5G) cellular Internet of Things to satisfy the requirements of massive connectivity, low power, and wide coverage and a low-complexity time-length allocation algorithm to minimize the total energy consumption.
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Spectral and Energy Efficiency in Cell-Free Massive MIMO Systems Over Correlated Rician Fading

TL;DR: This article considers the use of maximum-ratio transmission to beamform DL pilots in the DL beamforming training (BT) phase and develops two successive approximation algorithms to improve the sum spectral efficiency (SE) and total energy efficiency (EE).
Posted Content

Massive MIMO with Imperfect Channel Covariance Information

TL;DR: It is shown that having covariance information is not critical, but that it is relatively easy to acquire it and to achieve SE close to the ideal case of having perfect statistical information.
Journal ArticleDOI

Energy-Efficient Access-Point Sleep-Mode Techniques for Cell-Free mmWave Massive MIMO Networks With Non-Uniform Spatial Traffic Density

TL;DR: Numerical results show that the use of properly designed GoF-based ASO strategies under a non-uniform spatial traffic distribution can serve to considerably improve the achievable energy efficiency.
References
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Journal ArticleDOI

Fundamentals of statistical signal processing: estimation theory

TL;DR: The Fundamentals of Statistical Signal Processing: Estimation Theory as mentioned in this paper is a seminal work in the field of statistical signal processing, and it has been used extensively in many applications.
Journal ArticleDOI

Massive MIMO for next generation wireless systems

TL;DR: While massive MIMO renders many traditional research problems irrelevant, it uncovers entirely new problems that urgently need attention: the challenge of making many low-cost low-precision components that work effectively together, acquisition and synchronization for newly joined terminals, the exploitation of extra degrees of freedom provided by the excess of service antennas, reducing internal power consumption to achieve total energy efficiency reductions, and finding new deployment scenarios.
Journal ArticleDOI

Massive MIMO in the UL/DL of Cellular Networks: How Many Antennas Do We Need?

TL;DR: How many antennas per UT are needed to achieve η% of the ultimate performance limit with infinitely many antennas and how many more antennas are needed with MF and BF to achieve the performance of minimum mean-square error (MMSE) detection and regularized zero-forcing (RZF), respectively are derived.
Book

Massive MIMO Networks: Spectral, Energy, and Hardware Efficiency

TL;DR: This monograph summarizes many years of research insights in a clear and self-contained way and providest the reader with the necessary knowledge and mathematical toolsto carry out independent research in this area.
Journal ArticleDOI

A Coordinated Approach to Channel Estimation in Large-Scale Multiple-Antenna Systems

TL;DR: In this article, the problem of channel estimation in multi-cell interference-limited cellular networks is addressed by enabling a low-rate coordination between cells during the channel estimation phase itself.
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