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Broadband Beamforming

By Kalpana Seshadrinathan


Broadband wireless channels, where high data rates are transmitted, are extremely dispersive in nature. A fundamental challenge in the design of equalizers for the broadband case lies in reducing complexity. Broadband finite impulse response (FIR) beamformers employ a space-time antenna array which reduces the multipath delay spread to narrowband levels. The beamformers should additionally preserve the whiteness of the channel noise at the beamformer output to allow for the application of trellis based equalizers. The power complementarity property has been used to address this issue in the literature. Techniques to design FIR filters that preserve the whiteness of the channel noise when the received signal is oversampled are studied in this project

Year: 2009
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