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In this paper, we consider resource allocation for downlink OFDMA-based cognitive radio (CR) networks. Instead of using only channel information, the statistics of the sensing information conditioned on the primary user (PU) activity is also incorporated in the design and the optimization of the resource allocation. The objective is to maximize the ergodic weighted sum-rate under total power constraint...
Two main parameters influence the performance of Handover (HO) in Cellular systems, the Hysteresis (Hys) and the Time-To-Trigger (TTT). In Self-Organized Networks (SON) as has been proposed for LTE, the SON methods configure and optimize these two parameters to optimize HO performance. In this paper, we model the LTE HO procedure and propose an algorithm for self-configuration of the two HO trigger...
This paper addresses the power control problem in an underlay cognitive radio network where N selfish secondary users (SUs) sharing a frequency band with a primary user. The problem is studied from two perspectives: system level and user level. At the system level, a secondary network manager (SNM) is interested in minimizing the secondary network outage probability subject to peak power constraints...
One major topic of research into SON technology is the coordination of SON use cases. Network operators expect a coordinated handling of the parameter and configuration changes submitted to the operating network by closed-loop SON use case implementations. Beside a published conceptual framework, SON coordination has already been treated in the literature, especially regarding the mobility load balancing...
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