Jose V Paredes

US Patent:

6961397, Nov 1, 2005

Filed:

Jul 12, 2001

Appl. No.:

09/903881

Inventors:

Walid Ahmed - Eatontown NJ, US
Juan G. Gonzalez - Wilmington DE, US
Salim Manji - Edison NJ, US
Jose Luis Paredes - Newark DE, US

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

H04L007/00

US Classification:

375354, 375376

Abstract:

A symbol synchronizer comprises a distance metric computation module for computing a metric from received samples using a distance metric function within a symbol sampling period and based on a timing signal for each of the possible symbols in a constellation, a control signal computation module for selecting a smallest and a second smallest metrics, producing a difference by subtracting the smallest metric from the second smallest metric, and deriving a control signal from the difference, and a voltage-control clock for producing the timing signal based on the control signal.