Preamble detection in a multi-antenna MIMO 802.16e receiver

Details Preamble detection in a multi-antenna MIMO 802.16e receiver Preamble detection in a multi-antenna MIMO 802.16e receiver

2011-08-23

2011-08-23

Kim, Kevin Y (Department: 2611)

Pulse or digital communications

Synchronizers

Frequency or phase control using synchronizing signal

Reexamination Certificate

active

08005179

ABSTRACT:
A preamble detector for a plurality of streams of baseband digitized signals has a plurality of preamble processors, each preamble processor coupled to an input and generating an output. Each preamble processor has an input coupled to a first delay, the output of the first delay coupled to a second delay generating an output. The first and second delay are substantially equal to a preamble part. A first multiplier generates an output from a conjugated output of the second delay output and a first delay output. A second multiplier generates an output from a conjugated first delay output and an input stream. The first and second multiplier outputs are accumulated over an interval, and the complex output of the accumulator is formed into a magnitude, thereby generating the output of each preamble processor. The outputs of the preamble processors are summed and compared to a threshold to generate a preamble detect.

REFERENCES:
patent: 7711074 (2010-05-01), Lee et al.
patent: 2008/0273634 (2008-11-01), Patel et al.

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