DC removal techniques for wireless networking

Details DC removal techniques for wireless networking DC removal techniques for wireless networking

2007-05-01

2007-05-01

Eng, George (Department: 2617)

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

C375S319000

Reexamination Certificate

active

10133915

ABSTRACT:
A wireless communication device (WCD) performs DC removal on a received signal using a coarse DC removal unit that removes relatively large DC components and a fine DC removal loop that removes residual DC components. The coarse DC removal unit can be implemented in a receiver, and the flue DC removal loop can be implemented in a modem. In addition, a coarse DC estimation loop implemented on the modem may be coupled to the coarse DC removal unit to update DC offset values stored in the DC removal unit. By storing coarse DC offset values locally on the receiver, DC removal can be achieved very quickly.

REFERENCES:
patent: 6498929 (2002-12-01), Tsurumi et al.
patent: 6654593 (2003-11-01), Simmons et al.
patent: 2002/0160734 (2002-10-01), Li et al.
patent: 2003/0199264 (2003-10-01), Holenstein et al.
patent: 00/74231 (2000-12-01), None
patent: 02/29985 (2002-04-01), None

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