Title:
MULTI-PATH COMMUNICATION DEVICE FOR SHARING FEEDBACK PATH FOR DIGITAL PRE-DISTORTION
Document Type and Number:
WIPO Patent Application WO/2017/142124
Kind Code:
A1
Abstract:
The present invention relates to a multi-path communication device for sharing a feedback path for digital pre-distortion, the device comprising: a DPD processing unit for pre-distorting a plurality of input signals to output a plurality of pre-distorted signals, respectively, wherein an n-th control signal is output when an n-th input signal is selected, and an n-th pre-distorted signal is output using an n-th feedback signal that is input in response to the n-th control signal, for pre-distortion calculation; a power amplification unit for amplifying a plurality of pre-distorted signals to output a plurality of amplified signals, respectively; a signal coupling unit for coupling parts of a plurality of amplified signals to output coupled feedback signals, respectively; and a signal selection unit for selecting only an n-th feedback signal in coupled feedback signals to output the selected n-th feedback signal according to an input n-th control signal. Therefore, the present invention can prevent an increase in the size of a device and manufacturing cost, which may be caused by a plurality of DPD feedback paths.
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Inventors:
SEO KWANG NAM (KR)
KIM DO YOON (KR)
KIM HYOUNG HO (KR)
KIM DO YOON (KR)
KIM HYOUNG HO (KR)
Application Number:
PCT/KR2016/003144
Publication Date:
August 24, 2017
Filing Date:
March 28, 2016
Export Citation:
Assignee:
SOLID INC (KR)
International Classes:
H04L25/06; H03F1/32; H04L25/02
Foreign References:
US8803603B2 | 2014-08-12 | |||
US8948301B2 | 2015-02-03 | |||
US20120069931A1 | 2012-03-22 | |||
US20120313700A1 | 2012-12-13 | |||
US8396368B2 | 2013-03-12 |
Attorney, Agent or Firm:
ZENA PATENT LAW FIRM (KR)
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