Research on first adjacent channel interference in fm iboc dab 系統第一鄰頻道干擾研究
In - band - on - channel iboc 帶內同頻
Digital sound broadcasting is a general term covering a wide range of systems and technologies , including eureka 147 and isdb - t , which are designed to replace frequency modulation ( fm ) broadcasting , digital radio mondiale ( drm ) , a possible successor to amplitude modulation ( am ) , as well as iboc , which is intended to complement the existing am and fm services 數碼聲音廣播?是一個統稱,技術上是分為不同的系統和制式,有取代fm廣播的eureka147和isdb - t ,也有針對am廣播的drm ,和可以與amfm并存的iboc等系統,它們都有一個共通點,是現時的收音機并不適用。
Digital sound broadcasting is a general term covering a wide range of systems and technologies , including eureka 147 and isdb - t , which are designed to replace frequency modulation broadcasting , digital radio mondiale , a possible successor to amplitude modulation , as well as iboc , which is intended to complement the existing am and fm services 數碼聲音廣播?是一個統稱,技術上是分為不同的系統和制式,有取代fm廣播的eureka 147和isdb - t ,也有針對am廣播的drm ,和可以與am fm并存的iboc等系統,它們都有一個共通點,是現時的收音機并不適用。
The iboc technology , as proposed by the us - based ibiquity digital corporation , is also known as hd radio . it is designed to operate in the existing am and fm bands by attaching digital data to the sideband of analogue signals . the attached segment can either be a separate radio channel or other data Iboc是美國ibiquity digital corporation所推廣的制式,又命名為hd radio ,它被設計成可以在現行的am和fm頻帶內運行,在模擬訊號的邊旁加上數碼訊號,它可以是電臺聲音廣播或是其它的數據,但由于頻寬的限制,最大約是200kbps系統設計雖然善用有限的頻譜,但技術上較為覆雜,目前正發展第二代產品。