Approaches and Considerations for Evolution of OFDM-based UWB PHY Solutions beyond 1Gbps

We explore options for the evolution of WiMedia's OFDM-based UWB Physical Layer to provide 1-2 Gbps. Starting with a brief review of the current 480 Mbps WiMedia UWB physical layer, we consider first 'simple' options for expanding capacity and their limitations. We then estimate the channel capacity of multiple antenna UWB systems and evaluate a range of possible methods to achieve the targeted data rates, including a variety of MIMO-based techniques.

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