Abstract
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.
Original language | English |
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Article number | 7065231 |
Pages (from-to) | 333-336 |
Journal | IEEE Wireless Communications Letters |
Volume | 4 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1 Jun 2015 |
MoE publication type | A1 Journal article-refereed |