NDLI: Performance modelling of open loop and closed loop multiuser multiple-input multiple-output-orthogonal frequency division multiplexing systems through channel analysis

Content Provider	IET Digital Library
Author	Bhaskar, Vidhyacharan John, Anu Anna
Abstract	Multiple-input multiple-output (MIMO) technology can be combined with orthogonal frequency division multiplexing to achieve diversity gain and improvement in system spectrum efficiency. The relative capacity of different system configurations are obtained using various channel characteristics. In this study, the probability density function (PDF) and the cumulative distribution function expressions of the condition number [i.e. the maximum to minimum singular value ratio (MMSVR)] of the channel state information matrix are derived. This ratio is directly related to noise enhancement in open loop (OL) multiuser MIMO systems. The probability density function (PDF) of MMSVR is directly used to compute the channel capacity if specific channels fail at high throughput. Capacity expressions in terms of MMSVR are derived for OL and closed loop (CL) multiuser MIMO systems. The capacity of both OL and CL systems are plotted for different system specifications, different fading channels and compared with each other under both semi and doubly correlated channels. A novel algorithm is developed to compute the channel capacity and PDF of MMSVR of a generic NT × NR MIMO system.
Starting Page	1355
Ending Page	1366
Page Count	12
ISSN	17518628
Volume Number	9
e-ISSN	17518636
Issue Number	Issue 11, Jul (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/9/11
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2014.0613
Journal	IET Communications
Publisher Date	2015-06-08
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Algebra Channel Analysis Channel Capacity Channel State Information Matrix CL Multiuser MIMO System Closed Loop Multiuser Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing System Closed Loop System Cumulative Distribution Function Diversity Gain Doubly Correlated Channel Fading Channel Matrix Algebra Maximum to Minimum Singular Value Ratio MIMO Communication MMSVR Modulation And Coding Method Multi-access System Multiple Access Communication Noise Enhancement OFDM Modulation OL Multiuser MIMO System Open Loop Multiuser MIMO System Open Loop System PDF Probability Density Function Radio Link And Equipment Semicorrelated Channel Spectrum Efficiency Improvement Statistical Distribution Statistics
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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