METHOD AND RELAY DEVICE FOR REDUCING ADJACENT FREQUENCY INTERFERENCE

Title:

METHOD AND RELAY DEVICE FOR REDUCING ADJACENT FREQUENCY INTERFERENCE

Document Type and Number:

WIPO Patent Application WO/2015/127816

Kind Code:

A1

Abstract:

A method for reducing adjacent frequency interference includes: a receiver obtains a first analog signal from the radio frequency front-end of a transmitter, the first analog signal being the signal transmitted to the outside by the transmitter and which forms a self-interference signal in the antenna of the receiver; a first digital signal is obtained by performing analog-to-digital conversion to the first analog signal; the receiver receives a second analog signal including a useful signal and the self-interference signal; a second digital signal is obtained by performing analog-to-digital conversion to the second analog signal; the useful digital signal of the second digital signal is obtained by performing digital cancellation to the second digital signal and the first digital signal. In the present invention, the adjacent frequency interference of signal transmission on signal reception is reduced by means of signal processing without increasing the installation distance between a transmitting antenna and a receiving antenna. Furthermore, the backhaul link and the access link can be configured to be band-adjacent, thereby improving the flexibility of the backhaul link configuration and the access link configuration.

Inventors:

LIN HUAJIONG (CN)
CHEN WEIMIN (CN)
LI ZHENGZHENG (CN)
WANG QING (CN)

Application Number:

PCT/CN2014/095503

Publication Date:

September 03, 2015

Filing Date:

December 30, 2014

Export Citation:

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Assignee:

HUAWEI TECH CO LTD (CN)

International Classes:

H04B1/38

Foreign References:

CN102237906A	2011-11-09
CN102355296A	2012-02-15
US20030031279A1	2003-02-13

Other References: