Title:
ＦＭ中継装置、遅延プロファイル生成方法
Document Type and Number:
Japanese Patent JP7113437
Kind Code:
B2
Abstract:
To provide a technique for suppressing wraparound waves in a relay station of an FM broadcasting system that forms a single frequency network.SOLUTION: A signal reproduction unit (41) generates a transmission signal by demodulating a received signal from a reception antenna, and re-modulating the demodulated signal. A carrier wave of the transmission signal is different from a carrier wave of a broadcast wave only by an offset frequency set within a range of center frequency deviation allowed in FM broadcasting. A profile generation unit (432) generates a delay profile according to time axis correlation calculated using the received signal and the transmission signal. Suppression units (434 and 435) generate a replica signal of wraparound waves according to the delay profile, and subtract the replica signal from the received signal input to a signal reproduction unit.SELECTED DRAWING: Figure 2
Inventors:
Kenji Kono
Makoto Kaijima
Toshiyuki Mineyoshi
Hiroshi Okubo
▲恵▼良 勝治
Shozo Iwaki
Yamane Minoru
Daiichiro Ueda
Makoto Kaijima
Toshiyuki Mineyoshi
Hiroshi Okubo
▲恵▼良 勝治
Shozo Iwaki
Yamane Minoru
Daiichiro Ueda
Application Number:
JP2020157756A
Publication Date:
August 05, 2022
Filing Date:
September 18, 2020
Export Citation:
Assignee:
Nippon Communication Equipment Co., Ltd.
Yamaguchi Broadcasting Co., Ltd.
Nhk Technologies Co., Ltd.
Yamaguchi Broadcasting Co., Ltd.
Nhk Technologies Co., Ltd.
International Classes:
H04B7/015; H04B1/10; H04H20/67; H04L27/12
Domestic Patent References:
| JP2001007750A | ||||
| JP2014112817A | ||||
| JP5218991A | ||||
| JP2010135932A |
Attorney, Agent or Firm:
Nagoya International Patent Service Corporation
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