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The recent developments in the Broadband Wireless Access (BWA) communication systems have introduced several major changes to the existing systems. Legacy IEEE 802.16j is one such amendment to the existing IEEE 802.16 WiMAX family. The key modification introduced by 802.16j system is the concept of Relay Station (RS), which may be used to enhance the system coverage or to make system throughput optimal. The end terminals, Subscriber Stations (SS) are unchanged in the standard. The overall change pertinent to the system has raised many unresolved issues related to RS and Multi-hop Relay Base Station (MR-BS).
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