On the Asymptotic Sum Rate of Downlink Cellular Systems With Random User Locations

We consider a downlink cellular communication system with a multi-antenna base station (BS). A regularized zero forcing precoder is employed at the BS to manage the inter-user interference within the cell. Using methods from random matrix theory, we derive a deterministic approximation for the achie...

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Bibliographic Details
Published in:IEEE wireless communications letters Vol. 4; no. 3; pp. 333 - 336
Main Authors: Girnyk, Maksym A., Muller, Axel, Vehkapera, Mikko, Rasmussen, Lars K., Debbah, Merouane
Format: Journal Article
Language:English
Published: Piscataway IEEE 01.06.2015
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
IEEE comsoc
Subjects:
Authentication
Availability
Cellular system
Data privacy
Deterministic approximation
Encryption
Engineering Sciences
Finite-sized systems
Indexes
Inter-user interference
Mathematics
Mobile security
Mobile telecommunication systems
Multi antennas
Precoder matrix
Protocols
Random matrix theory
Random users
Random variables
Statistics
Cellular networks
linear precoding
random matrix theory
downlink
broadcast channel
ISSN:2162-2337, 2162-2345, 2162-2345
Online Access:Get full text
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Summary:We consider a downlink cellular communication system with a multi-antenna base station (BS). A regularized zero forcing precoder is employed at the BS to manage the inter-user interference within the cell. Using methods from random matrix theory, we derive a deterministic approximation for the achievable ergodic sum rate, taking into account the randomness from both fading and random user locations. The obtained approximation describes well the behavior of finite-sized systems and enables efficient optimization of the precoder matrix.
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ISSN:2162-2337
2162-2345
2162-2345
DOI:10.1109/LWC.2015.2415796