Location-Aware Transmission for Two-Cell Wireless Networks With Caching

A novel downlink transmission selection scheme based on the locations of users for network coded cache-enabled, Multiple-Input Multiple-Output (MIMO) systems is proposed in this paper. Caches are available at both base stations (BSs) and mobile terminals (MTs) and network coding is employed in order to reduce power consumption. We compare the analysis of the proposed scheme with a simple direct transmission scheme in terms of achievable sum rate and outage probability. It is shown that the proposed scheme is preferred for high transmit signal-to-noise ratio (SNR) and/or high cross-link channel gain ratio scenarios, while the simple direct transmission scheme is better for low SNR and/or low cross-link channel gain ratio. Motivated by this analytical results, we present a selection algorithm for location-aware transmission scheme for two-cell networks. Numerical results confirm our theoretical analysis.