PROBLEM TO BE SOLVED: To flexibly cope with maintenance and control information between mobile machines by negotiation between terminals. ;SOLUTION: A frame classification detection part 123 of each of base stations 12 and 14 detects frame classifications from mobile machines 11 and 15 and multiplex...
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Digital Mobile Radio (DMR) is an open digital mobile radio standard defined by ETSI and used in commercial products around the world. Mostly used by private network and local police, can be encrypted. Used in MOTOTRBO products.
used to carrymobileTVcontent, while the remaining capacity could be used for other ancillary services, e.g. DAB, datacasting, etc to facilitate the developmentofdigital radio. legco.gov.hk legco.gov.hk 頻帶III及 特高頻頻帶內最少50%傳輸容量應用來傳送流動電視內容,餘 下容量則可用作提供其他附加...
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Digital Private Mobile Radio (dPMR) Frequencies446.2 MHz,149.11875 MHz,446.1 MHz,149.01875 MHz Frequency Range149.01875 MHz - 446.2 MHz ModeNFM Modulation4FSK ACFFrame: 80 ms, Superframe: 320 ms Emission Designator— Bandwidth6.25 kHz LocationWorldwide ...
High speed modems and adaptive pulse code modulation systems (ADPCM) make extensive use of data reduction algorithms, as do digital mobile radio systems, MPEG recording and playback, and High Definition Television (HDTV). ; 3. Translate the following paragraph into English. 信号(如声音、 光或者...
The invention relates to a cellular digital mobile radio system including base stations (B<Sub>m</Sub>, B<Sub>n</Sub>) and mobile stations (MS<Sub>1</Sub>, MS<Sub>2</Sub>) with transmitters and receivers. The invention also relates to a method of transmitting message information digit...