Dynamic Frequency Allocation in OFDMA Cellular Networks

Resource Allocation in OFDMA Relay-Enhanced Cellular Networks

v ness. Simulation results indicate that CS-VF is more adaptable to different traffic distributions and dynamic network topologies. On the other hand, the proposed semi-distributed resource allocation scheme consists of a constant power allocation, adaptive subframe partitioning (ASP), and link-based or end-to-end packet scheduling. Simulation results indicate that the ASP algorithm increases s...

Radio resource allocation in relay based OFDMA cellular networks

Dynamic Distributed Resource Allocation in Relay Assisted OFDMA Networks

Relay assisted OFDMA networks are promising solutions for provision of high-data-rate services in wide coverage areas. However, the deployment of relays makes the resource allocation a more challenging and complex task. In this paper we study dynamic allocation of power and subchannels in an OFDMA downlink system with regenerative relays which have the capability of buffering the users’ data to...

Greedy online frequency allocation in cellular networks

The online frequency allocation problem for cellular networks has been well studied in these years. Given a mobile telephone network, whose geographical coverage area is divided into cells, phone calls are served by assigning frequencies to them, and no two calls emanating from the same or neighboring cells are assigned the same frequency. Assuming an online setting that the calls arrive one by...

Optimal soft frequency reuse and dynamic sub-carrier assignments in cellular OFDMA networks

Soft frequency reuse (SFR) is a common technique for co-channel interference (CCI) mitigation in cellular OFDMA networks. The performance of such networks significantly depends on the configuration of the power profiles that implement the soft frequency reuse patterns. In this paper, we investigate the performance of static soft frequency reuse by comparing it against the optimal case, in which...