System and method to perform DC compensation on a radio...

Details System and method to perform DC compensation on a radio... System and method to perform DC compensation on a radio...

2006-06-27

2006-06-27

Chin, Stephen (Department: 2634)

Pulse or digital communications

Receivers

Automatic baseline or threshold adjustment

C375S340000, C375S324000

Reexamination Certificate

active

07068735

ABSTRACT:
A method to perform DC compensation on a Radio Frequency (RF) burst transmitted between a servicing base station and a wireless terminal in a cellular wireless communication system that first receives the RF burst modulated according to either a first or second modulation format. Samples from the RF burst, or taken from the training sequence, are produced and averaged to produce a DC offset estimate. The DC offset estimate is then subtracted from each of the samples. The modulation format of RF burst may then be identified from the samples. Depending on the identified modulation format, the DC offset estimate may be re-added to the samples when a particular modulation format is identified as the modulation format of the RF burst. This decision is made based on how well various components within the wireless terminal perform DC offset compensation.

REFERENCES:
patent: 6868128 (2005-03-01), Lane
patent: 6907027 (2005-06-01), Baills et al.
patent: 2002/0064239 (2002-05-01), Husth

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