Abstract
The distributed wireless communications system is a new architecture for wireless access with multiple distributed relay stations (RSs). Instead of the traditional cellular system, the multihop cellular network for executing their data transmission can potentially augment coverage, data rates, and quality of service (QoS) performance. However, in the multiuser environment the multihop cellular system has a competition problem among users so that fair spectrum usage for all users becomes an important index of QoS. On the other hand, the system overloading matter of RSs may cause a system malfunction. In this paper, the RS overloading problem is considered, and we propose an adaptive fair spectrum usage algorithm for enhancing capacity and QoS of multiuser OFDM (orthogonal frequency division multiplexing) multihop cellular systems. Furthermore, an overloading cancellation algorithm also presented to cope with the RS overloading problem.
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