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On the asymptotic sum rate of downlink cellular systems with random user locations
KTH, School of Electrical Engineering (EES), Communication Theory.
KTH, School of Electrical Engineering (EES), Communication Theory.ORCID iD: 0000-0001-7182-9543
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2015 (English)In: IEEE Wireless Communications Letters, ISSN 2162-2337, E-ISSN 2162-2345, Vol. 4, no 3, 333-336 p., 7065231Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2015. Vol. 4, no 3, 333-336 p., 7065231
Keyword [en]
Mobile security, Random variables, Cellular system, Deterministic approximation, Finite-sized systems, Inter-user interference, Multi antennas, Precoder matrix, Random matrix theory, Random users, Mobile telecommunication systems
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-175037DOI: 10.1109/LWC.2015.2415796Scopus ID: 2-s2.0-84934291669OAI: oai:DiVA.org:kth-175037DiVA: diva2:876471
Funder
Swedish Research Council Formas
Note

QC 20151203

Available from: 2015-12-03 Created: 2015-10-09 Last updated: 2017-12-01Bibliographically approved

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Kildehøj Rasmussen, Lars

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