Method and apparatus for detecting offset signal of transmission leakage signal in rf transceiver
AssigneeLS Industrial Systems Co., Ltd.
InventorsHeon Soo CHOI, Chang Su Choi, Hyung Jun Jeon, Yeong Chan Kim
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Abstract
Disclosed is an RF transceiver in which transmission and reception are simultaneously performed, wherein a magnitude of a transmission leakage signal mixed into a receiving signal is measured, the maximum and minimum scopes on I/Q vector phase-plane in which an offset vector exists is set using the measured magnitude of the transmission leakage signal, the offset vector offsetting the transmission leakage signal as much as possible, a detection area in which the offset vector exists is determined in the set scope, and the offset vector is detected.
Claims10
A method for detecting an offset signal of a transmission leakage signal in an RF transceiver, the method comprising:
- enabling an RF transceiver used to simultaneously transmit and receive an RF signal to measure a magnitude of a transmission leakage signal mixed into a receiving signal;
- setting the maximum and minimum scopes on I/Q vector phase-plane in which an offset vector exists using the measured magnitude of the transmission leakage signal, the offset vector offsetting the transmission leakage signal as much as possible;
- and
- determining a detection area in which the offset vector exists and detecting the offset vector in the determined detection area.
An apparatus for detecting an offset signal of a transmission leakage signal in an RF transceiver, the apparatus comprising:
- a leakage signal detector for detecting amplitude information of a transmission leakage signal that is mixed into a receiving signal;
- a controller for determining an offset vector using the amplitude information of the transmission leakage signal detected by the leakage signal detector and controlling a generation of the offset signal to offset the transmission leakage signal;
- and
- a leakage signal offset unit for generating the offset signal according to a control of the controller, outputting the offset signal generated and cancelling the transmission leakage signal mixed into the receiving signal,
- wherein the controller sets the maximum and minimum scopes within which the transmission leakage signal exists on I/Q vector phase-plane according to the amplitude information of the transmission leakage signal detected by the leakage signal detector, divides an area between the maximum and minimum scopes that have been set into a plurality of areas with the origin as the reference point on the I/Q vector phase-plane, determines a sample point for each divided area, detects a vector for each sample point, determines an area in which the offset vector exists using the detected vector for the sample point in each area, and detects an offset vector at the determined area.
Dependencies are inferred from the claim text.