高品質混合式數位廣播(HD Radio)接收機之研究

Design of High Quality Hybrid DAB (HD Radio) Receiver

10.29688/MHJ.200902.0002

陳安邦(Arn-Bun Chen)；彭志翔(Chih-Hsiang Peng)；陳慧敏(Hui-Min Chen)

HD Radio ； 數位廣播 ； 數位廣播接收機 ； HD Radio ； DAB ； DAB Receiver

明新學報

35卷1期（2009 / 02 / 01）

1 - 11

繁體中文

目前在世界各地數位廣播系統所使用的標準共有美規IBOC(In-Band-on-Channel)、歐規EUREKA-147、日規ISDB、法規DRM 四種。而美國數位廣播所使用為Hybrid IBOC AM/FM系統。此系統在原本類比AM/FM頻譜上同時傳送數位和類比訊號。數位訊號會被載送於AM/FM頻帶內，所以頻帶內會有干擾存在Hybrid IBOC AM/FM系統中。因此混合式數位廣播(Hybrid Digital Broadcast)接收機必須解克服此問題，又能不破壞到類比訊號廣播。 本文主要介紹混合式數位廣播接收機，由Hybrid AM/FM訊號輸入經混波後，單路輸出訊號到IF的設計，可以跟雙路輸出訊號的HD Radio接收機，有一樣好的訊號品質。這樣的設計可以減少8~12%設計成本。我們會提出相關的測試和驗証，來証明此方法是比較簡單的設計而且有效率的。

Four standards are used for Digital Broadcast Systems in the world: American rule IBOC (In-Band-on-Channel), European rule EUREKA-147, Sundial ISDB, French rule DRM. In the U.S.A Digital Broadcasts, the system of Hybrid IBOC AM/FM is used. This system conveys the digital and analog signals simultaneously on frequency spectrum of original AM/FM broadcast system. Some digital signals exists in AM/FM band, there is some interfering in the system of Hybrid IBOC AM/FM in the band. So, we solve this problem in the receiver of HD Radio (Hybrid Digital Broadcast) and it does not destroy the analog signal also. In this paper, we introduce HD Radio receiver mainly. The input to the by Hybrid AM/FM signal, after mixer it produce equality for single output and dual output with HD Radio receiver. Such a design can reduce 8~12% design cost. We propose a simple and efficient design procedure form the test method and verification result.

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