Trajectory Optimization and Resource Allocation for OFDMA UAV Relay Networks

Relay Selection Fairness and Resource Allocation for OFDMA Networks

In this paper, resource allocation for a relay-based multi-user Orthogonal Frequency-Division Multiple Access (OFDMA) uplink system is studied. All the relays adopt the decode-and-forward protocol and assist the transmission from the source to destination. In current wireless networks, the terminal depends more on battery power. Given that, battery life is limited, prolonging the service life o...

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...

Resource allocation for the multiple-access relay channels and OFDMA

Within this article, the resource allocation problem for the multiple-access relay channel with orthogonal channel access is analysed. We propose a centralised optimisation framework that maximises the achievable sum rate of the network and that can be applied to a wide range of scenarios. We analyse different approaches to tackle the problem with individual transmit power constraints such as r...