Sum rate analysis of ZF receivers in distributed MIMO systems with Rayleigh/Lognormal fading
Paper i proceeding, 2012

This paper presents a detailed sum rate characterization of distributed multiple-input multiple-output systems operating over composite fading channels and employing linear zero-forcing receivers. We consider the Rayleigh/Lognormal fading model and also take into account the effects of path-loss and spatial correlation at the transmit side. New closed-form upper and lower bounds on the achievable sum rate are proposed that apply for arbitrary numbers of antennas. Moreover, we investigate the concept of large-scale multiple-antenna systems when the number of receive antennas grow large. In this asymptotic regime, it is shown that the effects of Rayleigh fading are averaged out and the channel is dominated by the much more slowly varying shadowing. An interesting observation from our results is that in order to maximize capacity, the radio ports should be placed at unequal distances to the base station when they experience the same level of shadowing.

Författare

Michail Matthaiou

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Signalbehandling

C. J. Zhong

Zhejiang University

M. R. McKay

Hong Kong University of Science and Technology

T. Ratnarajah

Queen's University Belfast

IEEE International Conference on Communications

15503607 (ISSN)

3857-3861 6363929

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1109/ICC.2012.6363929

ISBN

978-145772052-9