-It has been proven that the c.entralised method provides optimum control for radio resource management. In this paper, we propose a soft capacity method by means of a homogenous near-optimum SIR target algorithm for CDMA cellular systems based on distributed power control (DPC) methods. Simulation results prove that the system capacity (or resources) is maximised if the SIR target management at the load controller is considered. Moreover, during high cell load, by removing users experiencing the worse link loss, a gain in the capacity is observed as well as reducing the noise rise in the system compare to the classical DPC fixed SIR target.
Abstract-It is foreseen that the next generation of cellular network would integrate the relaying or multihop scheme. In a multihop cellular architecture, the users are not only able to communicate directly to the base station (BS) but can also use some relay stations to relay their data to the BS. In such architecture, it may happen that a relayed user handover to another relay station during its communication: this process is called the inter-relay handoff. The main objective of this paper is to study how frequent the inter-relay handoff occurs and its impact on the relaying system performance. For this, different algorithms to decide when a user should inter-relay handover are proposed and tested through a dynamic system level simulator. We compare the capacity gain for the different algorithm with the conventional cellular networks using the UMTS FDD mode. The result showed that with an appropriate inter-relay handoff scheme, the uplink capacity gain of 35% is readily achievable.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.