Capacity Bounds on the Ergodic Capacity of Distributed MIMO Systems over K Fading Channels

2016 ◽  
Vol 10 (8) ◽  
Keyword(s):  
Fading Channels ◽  
Mimo Systems ◽  
Ergodic Capacity ◽  
Capacity Bounds

scholarly journals Beamforming Using Exact Evaluation of Leakage and Ergodic Capacity of MU-MIMO System

Sensors ◽  
2021 ◽  
Vol 21 (20) ◽  
pp. 6792
Author(s):  
Ahmad Kamal Hassan ◽  
Muhammad Moinuddin
Keyword(s):  
Closed Form ◽  
Fading Channels ◽  
Quadratic Forms ◽  
Mimo Systems ◽  
Mimo System ◽  
Multiple Input Multiple Output ◽  
Ergodic Capacity ◽  
Leakage Rate ◽  
Telecommunication Networks ◽  
Indefinite Quadratic

Closed-form evaluation of key performance indicators (KPIs) of telecommunication networks help perform mathematical analysis under several network configurations. This paper deals with a recent mathematical approach of indefinite quadratic forms to propose simple albeit exact closed-form expressions of the expectation of two significant logarithmic functions. These functions formulate KPIs which include the ergodic capacity and leakage rate of multi-user multiple-input multiple-output (MU-MIMO) systems in Rayleigh fading channels. Our closed-form expressions are generic in nature and they characterize several network configurations under statistical channel state information availability. As a demonstrative example of the proposed characterization, the derived expressions are used in the statistical transmit beamformer design in a broadcast MU-MIMO system to portray promising diversity gains using standalone or joint maximization techniques of the ergodic capacity and leakage rate. The results presented are validated by Monte Carlo simulations.

scholarly journals Gallager Exponent Analysis of Coherent MIMO FSO Systems over Gamma-Gamma Turbulence Channels

Entropy ◽  
2020 ◽  
Vol 22 (11) ◽  
pp. 1245
Author(s):  
Maoke Miao ◽  
Xiaofeng Li
Keyword(s):  
Fading Channels ◽  
Upper Bound ◽  
Communication Systems ◽  
Large Scale ◽  
Mimo Systems ◽  
Multiple Input Multiple Output ◽  
Block Code ◽  
Ergodic Capacity ◽  
High Signal ◽  
Free Space Optical

This paper studies the Gallager’s exponent for coherent multiple-input multiple-output (MIMO) free space optical (FSO) communication systems over gamma–gamma turbulence channels. We assume that the perfect channel state information (CSI) is known at the receiver, while the transmitter has no CSI and equal power is allocated to all of the transmit apertures. Through the use of Hadamard inequality, the upper bound of the random coding exponent, the ergodic capacity and the expurgated exponent are derived over gamma–gamma fading channels. In the high signal-to-noise ratio (SNR) regime, simpler closed-form upper bound expressions are presented to obtain further insights into the effects of the system parameters. In particular, we found that the effects of small and large-scale fading are decoupled for the ergodic capacity upper bound in the high SNR regime. Finally, a detailed analysis of Gallager’s exponents for space-time block code (STBC) MIMO systems is discussed. Monte Carlo simulation results are provided to verify the tightness of the proposed bounds.

scholarly journals Capacity Bounds for AF Dual-hop Relaying in ${\cal G}$ Fading Channels

2012 ◽  
Vol 61 (4) ◽  
pp. 1730-1740 ◽  
Author(s):  
Caijun Zhong ◽  
Michail Matthaiou ◽  
George K. Karagiannidis ◽  
Aiping Huang ◽  
Zhaoyang Zhang
Keyword(s):  
Fading Channels ◽  
Capacity Bounds

Approximate closed-form expression for the ergodic capacity of polarisation-diversity MIMO systems

2004 ◽  
Vol 40 (19) ◽  
pp. 1192 ◽  
Author(s):  
J. Pérez ◽  
J. Ibáñez ◽  
L. Vielva ◽  
I. Santamaría
Keyword(s):  
Closed Form ◽  
Mimo Systems ◽  
Ergodic Capacity ◽  
Closed Form Expression ◽  
Form Expression
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