Method for correcting receiver in TDD system and devices associated therewith

Patent metadata

Field	Value
Publication number	US-9166643-B2
Application number	US-201213664493-A
Country	US
Kind code	B2
Filing date	Oct 31, 2012
Priority date	Nov 1, 2011
Publication date	Oct 20, 2015
Grant date	Oct 20, 2015

Abstract

The present invention discloses a Zero-IF receiver in a Time division Duplex TDD system, a correction method therefor and a base station associated therewith. The Zero-IF receiver comprises a Radio Frequency RF circuit, a baseband circuit, and a correction circuit for correcting baseband signals from the baseband circuit based on correction parameters. Said Zero-IF receiver further comprises a training signal providing part for providing a training signal to train the correction circuit to adapt said correction parameters, and a training signal coupling part for coupling said training signal to the baseband circuit during an idle period of the Zero-IF receiver to enable the correction circuit to adapt said correction parameters based on said training signal. The present invention provides stable and reliable training signals that can be used to adapt correction parameters of a correction circuit to improve receiver performance.

First claim

The invention claimed is:

1. A system, comprising:
a transmitter configured to:
convert a training signal to a first transmit radio frequency (RF) signal;
convert the first transmit RF signal to a second transmit RF signal and a third transmit RF signal; and
send the second transmit RF signal and the third transmit RF signal during a non-time division duplex (TDD) receive period; and

a zero intermediate frequency (Zero IF) receiver operationally coupled to the transmitte…

Assignees

• He Fan
• Ericsson Telefon Ab L M

Inventors

• He Fan

Classifications

• H04B2001/305

  Electricity · mapped topic

• H04B1/30 Primary

  Electricity · mapped topic