Improvement of the reception capability of time dissemination of shortwave broadcasting by digital modulation

Author

Yang, S.H. ; Lee, Y.K. ; Kwon, T.Y. ; Lee, C.B. ; Lee, S.J.

Author_Institution

Center for Time & Freq., KRISS, Daejeon, South Korea

fYear

2011

fDate

2-5 May 2011

Firstpage

1

Lastpage

3

Abstract

KRISS (Korea Research Institute of Standards and Science) has been operating the standard time and frequency broadcasting station (call sign: HLA) since 1984. The station HLA broadcasts continuous time and frequency signals on 5 MHz carrier frequency and 2 kW transmit power. But the poor reception due to radio interference is decreasing users. Therefore to increase the radio reception, a digital modulation method and an increase of bit rate are introduced additionally to the present amplitude-modulated radio signal. We describe a digital modulation method for improving radio reception of the standard time and frequency by shortwave.

Keywords

modulation; radio broadcasting; radio reception; HLA broadcast; KRISS; amplitude-modulated radio signal; bit rate; digital modulation method; frequency 5 MHz; power 2 kW; radio interference; radio reception capability; shortwave broadcasting; time dissemination; Bit error rate; Digital modulation; Frequency modulation; Spread spectrum communication; Time frequency analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control and the European Frequency and Time Forum (FCS), 2011 Joint Conference of the IEEE International

Conference_Location

San Fransisco, CA

ISSN

1075-6787

Print_ISBN

978-1-61284-111-3

Type

conf

DOI

10.1109/FCS.2011.5977785

Filename

5977785