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Archive for November, 2009

Last week, I presented my paper Tunable N-Path Mismatch Shaping for Multibit Bandpass Delta-Sigma Modulators at the 43rd Asilomar Conference on Signals, Systems and Computers.

From the abstract:

Many radio applications require the use of programmable bandpass Delta-Sigma converter. In the digital-to-analog converter (DAC) used within a Delta-Sigma converter, non-linearities created by DAC element mismatch error can be spectrally shaped to fall outside the signal band. The mismatch shapers within these converters thus also need to be programmable in order to follow the signal band. This paper proposes a new technique that tunes the center frequency of a mismatch noise transfer function while using an arbitrary mismatch shaping algorithm.

A pre-publication copy of the paper can be found here.

Edit-2010: the paper has finally been uploaded to IEEExplore.

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Path from Asilomar conference grounds to the pacific ocean (photo by Waqas Akram)

The Asilomar Conference on Signals, Systems, and Computers took place from November 1-4, 2009, at the Asilomar conference grounds, in Pacific Grove, California. Located near 17 Mile Drive and Pebble Beach, this scenic ocean-side location played host to scores of professors, researchers and professionals from the signal processing community. The conference grounds consist of wood and stone buildings nestled amongst tree-lined streets and pathways.

Asilomar possesses a rich history stretching back a century, when the YWCA built a location for holding their regional conferences. It has since become a fine venue for small conferences and to serve hotel guests for regional events such as the Pebble Beach Councours d’Elegance.

Coastline beside the Asilomar conference grounds (photo by Waqas Akram)

At dawn on Monday, I joined a number of conference attendees for a long and spirited walk along the beach to enjoy the gorgeous views of the mist receding into the ocean as the sun appeared on the horizon. Apparently, this group had attended the conference for over thirty years, and walked at dawn every day. No doubt a good way to keep both body and intellect fresh for the day’s talks.

On the last day, the conference organizers arranged for a bonfire with marshmellows, and all attendees invited. Researchers from all backgrounds mingled and socialized, discussing more than just their research topics. The conference was a memorable experience that won’t soon be forgotten. I look forward to returning here before too long.

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