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 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.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)

Nyckelord

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

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)