公开(公告)号：KR1020010064229A

公开(公告)日：2001-07-09

申请号：KR1019990062379

申请日：1999-12-27

Applicant: 한국전자통신연구원

Inventor： 정영호 ,  박소라 ,  오길남 ,  박재홍 ,  김건

IPC: H04H20/48 ,  H04H20/47

Abstract: PURPOSE: A DAB(Digital Audio Broadcasting) system in an FM(Frequency Modulation) band is provided to implement a DAB service and to maintain a data transmission speed, and to easily convert an analog broadcasting into a digital broadcasting. CONSTITUTION: A DAB(Digital Audio Broadcasting) system installs a hybrid DAB system applied to a channel having an existing analog FM(Frequency Modulation) signal and an all digital DAB system applied to a channel not-having the analog FM signal, and perform a DAB in an FM band. The hybrid DAB system performs an FM relating to a sampling signal to generate an FM signal. The hybrid DAB system performs an audio coding, a channel coding, an interleaving relating to the sampling signal, and modulates the signal by an OFDM(Orthogonal Frequency Division Multiplexing) modulator to generate a DAB signal. The all digital DAB system performs the audio coding, the channel coding, the interleaving relating to a sampling audio signal and modulates the sampling audio signal by the OFDM modulator to generate the DAB signal, then transmits the DAB signal to the FM band.

Abstract translation: 目的：提供FM（频率调制）频带中的DAB（数字音频广播）系统来实现DAB服务并保持数据传输速度，并且可以容易地将模拟广播转换成数字广播。 规定：DAB（数字音频广播）系统将应用于具有现有模拟FM（频率调制）信号和全数字DAB系统的信道的混合DAB系统安装到不具有模拟FM信号的信道上，并执行 DAB在FM频段。 混合DAB系统执行与采样信号相关的FM以产生FM信号。 混合DAB系统执行音频编码，信道编码，与采样信号相关的交织，并通过OFDM（正交频分复用）调制器对信号进行调制以产生DAB信号。 全数字DAB系统执行音频编码，信道编码，与采样音频信号相关的交织，并通过OFDM调制器调制采样音频信号以产生DAB信号，然后将DAB信号发送到FM频带。