Protocols and system capacity of relay-enhanced HSDPA systems

In this paper we examine the impact of using relays on the throughput and coverage of the High-Speed Packet Downlink Access (HSDPA) cellular system.We consider two cooperation schemes that can be incorporated into the existing HSPDA system with relative ease. Using a system-level simulation approach we demonstrate that relaying, when properly designed and deployed, can have a significant positive impact on the throughput and coverage of cellular systems.