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There has been an increasing demand for bandwidth-intensive services in mobile devices, such as streaming video and music, which bring about a paradigm shift in wireless cellular network architectures. Although various coding and modulation schemes are being adopted to address these requirements, a critical area of modification is the existing wireless network infrastructure, in particular, the backhaul architecture. Not only is it required to support high data rates, but also the hierarchical backhaul topology needs to yield to highly flexible and easily reconfigurable mesh network architecture to support new technologies and smaller cell sites.
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