	US 7,580,482 B2
	Joint, adaptive control of equalization, synchronization, and gain in a digital communications receiver
Thomas J. Endres, 8916 41st Ave. SW., Seattle, Wash. 98136 (US); Christopher D. Long, 23326 SE. 199th St., Maple Valley, Wash. 98038 (US); Wonzoo Chung, 23606 62nd Ave., S., Apt. C101, Kent, Wash. 98032 (US); and Rory Fagan, 6406 Augusta Ct., Mukilteo, Wash. 98225 (US)
Filed on Feb. 19, 2004, as Appl. No. 10/782,316.
Claims priority of provisional application 60/448643, filed on Feb. 19, 2003.
Prior Publication US 2004/0190649 A1, Sep. 30, 2004
Int. Cl. H04L 27/00 (2006.01)

U.S. Cl. 375—326 [375/345]

3 Claims

1. In a wireless communications receiver having a timing recovery module, carrier recovery module, automatic gain control module, and equalization module, said communications receiver responsive to a received signal to form soft decision samples corresponding to said received signal and hard decision samples corresponding to said received signal, a method for jointly operating said timing recovery module, said carrier recovery module, said automatic gain control module, and said equalization module, said method comprising:

deriving control signals from said soft and hard decision samples, wherein the control signals comprise a candidate error term and a combining weight, wherein said combining weight is based on a normalized difference between said soft and hard decision samples; and

using said control signals to jointly determine operation of said timing recovery module, said carrier recovery module, said automatic gain control module, and said equalization module.