HOMODYNE RECEIVER CALIBRATION - ERICSSON TELEFON AB L M (PUBL)

Title:

HOMODYNE RECEIVER CALIBRATION

Document Type and Number:

WIPO Patent Application WO/2017/024522

Kind Code:

A1

Abstract:

There is provided mechanisms for calibrating a homodyne receiver in a signal distribution network for time division duplex. A method is performed by a baseband calibration module. The method comprises acquiring a transmission signal being input to a homodyne transmitter of the signal distribution network. The method comprises acquiring, from a heterodyne transmitter observation receiver of the signal distribution network, a first received version of the transmission signal. The method comprises acquiring, from a homodyne receiver of the signal distribution network, a second received version of the transmission signal. The method comprises calibrating the homodyne receiver using a comparison of the first received version of the transmission signal and the second received version of the transmission signal, using the first received version of the transmission signal as a reference signal, and using the transmission signal as a calibration signal.

Inventors:

LI MING (CN)
SU YOUPING (SE)
BJOERK VIMAR (SE)
KLINGBERG MATS (SE)
SPEE GERLACH (SE)

Application Number:

PCT/CN2015/086645

Publication Date:

February 16, 2017

Filing Date:

August 11, 2015

Export Citation:

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Assignee:

ERICSSON TELEFON AB L M (PUBL) (SE)
LI MING (CN)

International Classes:

H04L25/03

Domestic Patent References:

WO2014000807A1

2014-01-03

Foreign References:

US20080187038A1	2008-08-07
CN101938438A	2011-01-05
US5117377A	1992-05-26
JPH08256079A	1996-10-01
US5826180A	1998-10-20
US4119940A	1978-10-10

Other References: