US 12,255,687 B2
Remote unit, multi-band distributed system and signal processing method
Yaoguang He, Suzhou (CN); Bin Zhu, Suzhou (CN); and Haijun Min, Suzhou (CN)
Assigned to PROSE TECHNOLOGIES (SUZHOU) CO., LTD., Suzhou (CN); and PROSE TECHNOLOGIES LLC, Mount Olive, NJ (US)
Filed by PROSE TECHNOLOGIES (SUZHOU) CO., LTD., Suzhou (CN); and PROSE TECHNOLOGIES LLC, Mount Olive, NJ (US)
Filed on Jun. 1, 2023, as Appl. No. 18/327,703.
Application 18/327,703 is a continuation of application No. PCT/CN2022/076746, filed on Feb. 18, 2022.
Claims priority of application No. 202110471978.6 (CN), filed on Apr. 29, 2021; application No. 202120919537.3 (CN), filed on Apr. 29, 2021; and application No. 202110734993.5 (CN), filed on Jun. 30, 2021.
Prior Publication US 2023/0308184 A1, Sep. 28, 2023
Int. Cl. H04B 10/2575 (2013.01); H04B 10/2507 (2013.01)
CPC H04B 10/25758 (2013.01) [H04B 10/25073 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A remote unit, comprising:
an optical module configured to receive a signal from an access unit communicatively connected to the remote unit;
a power distribution module connected to the optical module and configured to divide the signal received from the optical module into a first component and a second component, wherein the second component has a working band different from that of the first component;
a first low noise and high-power amplifier connected to the power distribution module and configured to process the first component; and
a second low noise and high-power amplifier connected to the power distribution module and configured to process the second component,
wherein the second low noise and high-power amplifier comprises:
a driving amplifier configured to amplify the second component;
a digital processing module configured to perform noise reduction, filtering and pre-distortion processing on the amplified second component;
a power amplifier configured to perform power amplification on the second component processed by the digital processing module;
a circulator configured to isolate the second component amplified by the power amplifier; and
a filter configured to filter the second component isolated by the circulator.