DC offset cancellation for WLAN communication devices

Details DC offset cancellation for WLAN communication devices DC offset cancellation for WLAN communication devices

2004-10-21

2008-11-25

Payne, David C. (Department: 2611)

Pulse or digital communications

Receivers

Automatic baseline or threshold adjustment

Reexamination Certificate

active

07457374

ABSTRACT:
A method of transmitting information in a WLAN (Wireless Local Area Network) network and corresponding WLAN communication devices and integrated circuit chips are provided. A correction signal is used for compensating for a dc offset in a data signal containing at least part of the information to be transmitted. The correction signal is varied by making it taking different values. For each of the different values, a strength of an indicator signal indicative of the dc offset is determined. Based upon the determined strength, an optimum value of the correction signal is identified at which the dc offset is minimized. The value of the correction signal is set to the optimum value. Further, a method of transmitting information in a WLAN network is provided, including compensating for a first and second dc offset in a first and second data signal, respectively, using a first and second feedback loop, respectively.

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