Title:
GEAR SHIFTING APPARATUS AND METHOD OF LOW NOISE AMPLIFIER, TERMINAL, AND NETWORK ELEMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/098328
Kind Code:
A1
Abstract:
The present disclosure relates to a gear shifting apparatus and method of a low noise amplifier (LNA), a terminal, and a network element device. The apparatus comprises: a LNA configured to amplify a received signal to obtain a first signal, the received signal comprising out-of-band interference and a target signal; a peak-to-average power ratio (PAPR) module configured to measure a PAPR value of the first signal; and an automatic gain control (AGC) module configured to adjust a gain gear of the LNA according to the PAPR value, the maximum linear input power point of the LNA, and the intensity of the first signal. According to embodiments of the present disclosure, gear shifting is implemented by measuring total average power and a PAPR value of a target signal and interference in a received signal and combining the maximum linear input power point of an LNA, so that the received signal has a total power peak value exactly smaller than and closest to the maximum linear input power point of the LNA when entering the LNA, the signal-to-noise ratio is optimal, and intelligent gear shifting of the LNA in a burst broadband communication system is achieved.
Inventors:
CAO MINGWEI (CN)
Application Number:
PCT/CN2020/111778
Publication Date:
May 27, 2021
Filing Date:
August 27, 2020
Export Citation:
Assignee:
SPREADTRUM COMM SHANGHAI CO (CN)
International Classes:
H04B1/10; H04B1/18
Foreign References:
| CN110912570A | 2020-03-24 | |||
| CN101171746A | 2008-04-30 | |||
| CN208028859U | 2018-10-30 | |||
| CN102405595A | 2012-04-04 | |||
| CN107211379A | 2017-09-26 | |||
| CN108781120A | 2018-11-09 | |||
| CN204465876U | 2015-07-08 | |||
| US20080225168A1 | 2008-09-18 |
Other References:
WENCHENG CHEN ; JIA SONG ; DERONG CHEN ; WEI LI ; T. AARON GULLIVER: "Performance of OFDM with AGC at 340 MHz", COMMUNICATIONS, COMPUTERS AND SIGNAL PROCESSING (PACRIM), 2011 IEEE PACIFIC RIM CONFERENCE ON, IEEE, 23 August 2011 (2011-08-23), pages 422 - 425, XP031971190, ISBN: 978-1-4577-0252-5, DOI: 10.1109/PACRIM.2011.6032930
See also references of EP 4064574A4
See also references of EP 4064574A4
Attorney, Agent or Firm:
LINDA LIU & PARTNERS (CN)
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