Title:
無線アクセスシステム及びその制御方法
Document Type and Number:
Japanese Patent JP6652130
Kind Code:
B2
Abstract:
Provided are a wireless access system provided with a remote unit capable of handling a high-frequency region without being made complicated, and a control method for the same. A wireless access system according to the present invention is provided with: a center unit (1); and a remote unit (3) that converts a baseband signal generated by the center unit (1) into a high-frequency signal and emits the high-frequency signal from an antenna (12). The center unit (1) includes a 1-bit modulator (5) that converts the baseband signal into a 1-bit signal on the basis of a generated clock signal and outputs the 1-bit signal. The remote unit (3) includes: a local generation unit (10) that extracts the clock signal from the 1-bit signal output from the center unit (1), and generates a local signal using the extracted clock signal as a reference signal; a filter (13) that extracts a desired band component from the 1-bit signal; and an up-converter (14) that converts, using the local signal, an output signal of the filter into a high-frequency signal.
More Like This:
Inventors:
Shinichi Hori
Tomoyuki Yamase
Tomoyuki Yamase
Application Number:
JP2017515364A
Publication Date:
February 19, 2020
Filing Date:
March 07, 2016
Export Citation:
Assignee:
NEC
International Classes:
H04L27/04; H03M3/02; H04B1/04
Domestic Patent References:
| JP2002057732A | ||||
| JP2000152300A |
Foreign References:
| WO2012153567A1 | ||||
| US20130004180 |
Attorney, Agent or Firm:
Masahiko Desk
Naoki Shimosaka
Naoki Shimosaka