Conference Proceedings

Transmission Mode Selection in a Heterogeneous Network using Opportunistic Beamforming

Jiatian Liang, Feng Li, Brian Krongold, Jamie Evans

Proceedings of the 2013 IEEE Global Communications Conference | IEEE | Published : 2013

Abstract

In this paper, we consider a heterogeneous network where the statistics of fading channels between the Base Station (BS) and various users are different. The network can operate either in a single-user mode (i.e. the BS transmits to one user at a time) or in a multi-user mode via opportunistic beamforming. Given the profile of users' fading channel statistics, we are able to derive the exact downlink capacities associated with different modes assuming a 2-Tx BS, as well as determine the optimal mode that maximizes the throughput. The switching point between transmission modes depends on the signal-to-noise ratio (SNR), the distribution of users and the path loss of the fading channel. Simula..

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