Trw Limited

Keith K Yamashiro

Thomas J Kolze

Pascal G Finkenbeiner

Jack K Basham

A high performance, low cost technique for carrier recovery and tracking of high rate demodulator (&gt;200 Mbps to multi-gigabits per second) system is presented. The locally generated carrier is held in phase locked synchronism with the incoming modulated carrier through a carrier recovery scheme in which the modulated data is detected and subsampled using the bit synchronizing circuitry to provide a strobe signal for subsampling. The voltage levels of the subsampled data are analyzed to determine a phase error signal. The subsampled data are used to address a lookup table of error values stored in memory.

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Torrance, CA, United States of America

Keith K Yamashiro