Reconfigurable OFDM Receiver for Next Generation Wireless Mesh

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ProQuest, 2008 - 64 pages
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Performance of current mesh networks suffer due to the lack of an intelligent physical layer. Research and development in higher layer protocols alone cannot reduce the latency and performance of next generation wireless networks. If such a physical layer was designed so that it minimizes the involvement of higher layer protocols when it comes to routing, then latency in wireless networks can be reduced significantly. The transceiver for such a physical layer should have the ability to selectively switch the incoming packets "on-the-fly" to a different part of the spectrum so that a full-duplex transmit-receive chain is possible. This is also facilitated by the use of orthogonal modulation techniques either using orthogonal codes (OCDM) or orthogonal frequencies (OFDM) for transmission. An intelligent PHY like the one mentioned above will also play an integral part when it comes to cooperative transport of packets using MIMO systems and exploiting the spatial diversity of multiple antenna systems.

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Theoretical Background
OFDM Receiver Physical Layer Router
Performace Evaluation and Analysis

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