In this paper, the performances of using Fractional Frequency Reuse (FFR) schemes together with beamforming technique are presented. The key performances in terms of Signal-toInterference plus Noise Ratio (SINR) and channel capacity are compared. The beamforming antenna array have been both simulated and measured. The results show that the beamforming technique improves the channel capacity and...

Proximity-based applications are becoming fast growing markets suggesting that device-to-device (D2D) communications is becoming an essential part of the future mobile data networks. We propose scalable admission and power control methods for D2D communications underlay cellular networks to increase the reuse of frequency resources and thus network capacity while maintaining QoS to all users. I...

This paper presents the first closed-form analysis of cochannel and adjacent channel reuse ratio distributions in dynamic channel assignment (DCA) cellular systems and compares the results with conventional fixed channel assignment (FCA) cellular systems. Computer simulations show that DCA systems exhibit significantly closer cochannel and adjacent channel frequency reuse than FCA systems for a...