DC offset correction for a wireless communication system
First Claim
1. A receiver for a wireless communication system comprising:
- amplifier circuitry adapted to amplify a received radio frequency (RF) signal to provide an amplified RF signal;
downconversion circuitry adapted to convert the amplified RF signal to a downconverted signal;
digitization circuitry adapted to digitize the downconverted signal to provide a digital signal; and
digital DC offset correction circuitry adapted to receive the digital signal, detect a DC offset of the digital signal, and subtract the DC offset from the digital signal, wherein the digital DC offset correction circuitry is enabled during dead time when the downconverted signal should have no DC content and the amplifier circuitry is enabled.
4 Assignments
0 Petitions
Accused Products
Abstract
A system and method for performing DC offset correction in a wireless communication receiver during “dead time” are provided. The receiver includes amplifier circuitry that amplifies a received radio frequency (RF) signal, downconversion circuitry that downconverts the received RF signal to provide a downconverted signal, digitization circuitry that digitizes the downconverted signal to provide a digital signal, and digital DC offset correction circuitry enabled during the dead time when there should be no DC content in the downconverted signal. In operation, the digital DC offset correction circuitry detects a DC offset of the digital signal and subtracts the DC offset from the digital signal.
-
Citations
19 Claims
-
1. A receiver for a wireless communication system comprising:
-
amplifier circuitry adapted to amplify a received radio frequency (RF) signal to provide an amplified RF signal; downconversion circuitry adapted to convert the amplified RF signal to a downconverted signal; digitization circuitry adapted to digitize the downconverted signal to provide a digital signal; and digital DC offset correction circuitry adapted to receive the digital signal, detect a DC offset of the digital signal, and subtract the DC offset from the digital signal, wherein the digital DC offset correction circuitry is enabled during dead time when the downconverted signal should have no DC content and the amplifier circuitry is enabled. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 19)
-
-
11. A method of performing DC offset correction in a receiver for a wireless communication system comprising:
-
amplifying a received radio frequency (RF) signal to provide an amplified RF signal; downconverting the amplified RF signal to a downconverted signal; digitizing the downconverted signal to provide a digital signal; and detecting a DC offset of the digital signal, and subtracting the DC offset from the digital signal during a dead time when the downconverted signal should have no DC content and the amplified RF signal is provided by amplifying the received RF signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
-
Specification