Firstly, an Introduction section describes the transmission and reception infrastructures. Subsequently, results will be summarized in three sections: Simulcast, Monocast DRM and Monocast DRM Indoor Reception. The first study analyzes the quality of analogue and digital services in the multi-channel simulcast based on a set of static and mobile measurements. Also the potential interference betw...

Orthogonal frequency division multiplexing is a type of multicarrier modulation technique which is used in wireless communication. OFDM can be used in various wireless and wired application such Digital audio broadcasting, digital video broadcasting & wireless LAN. The Performance of OFDM system depends on various parameters such as using different transform, different modulation and by putting...

The name MPEG-4 High-Efficiency AAC (HE-AAC) refers to a family of recent audio coders that were developed by the ISO/IEC Moving Picture Experts Group (MPEG) by subsequent extension of the established Advanced Audio Coding (AAC) architecture. These algorithmic extensions facilitate a significant increase in coding efficiency relative to previous standards and other known systems. Thus, they pro...

Signals and systems is an important aspect of radio science. The recent progress of the research activities of signals and systems in China is reviewed in this paper. It covers the most advanced and important developments during years of 1998~2001. The review is based on the following categories: wideband CDMA, software radio, digital audio broadcasting technologies, information processing, rad...

An audio fingerprint is a content-based compact signature that summarizes an audio recording. Audio Fingerprinting technologies have recently attracted attention since they allow the monitoring of audio independently of its format and without the need of meta-data or watermark embedding. These technologies need to face channel robustness as well as system accuracy and scalability to succeed on ...

This paper introduces the world’s first video and audio codec system that complies with 8K broadcasting standards and describes transmission experiments via a broadcasting satellite using this system. 8K Super Hi-Vision (8K) is a broadcasting system capable of highly realistic 8K Ultra High Definition Television (UHDTV) video and 22.2 multichannel audio. In Japan, domestic standards for 8K broa...

An OFDM signal consists of N sinusoids (bins) with spacing 1/T, that are modulated by data symbols that have a duration T, equal to the inverse channel spacing. Hence, although the modulated bins spectrally overlap, they are orthogonal. The generation of the OEDM signals at the transmitter and the demodulation at the receiver can be pedormed efficiently by means of Fast Fourier Transforms. The ...

Digital Audio Broadcasting (DAB) is an emerging technology which is currently experiencing rapid growth following the advent of ETS 300-401 DAB standard in Europe and the ATSC ATV standard in the U.S. Wide-band audio compression is performed by ISO-MPEG layer II for DAB, and by Dolby AC-3 for ATV. To achieve high quality audio, current DSP implementations for such compression algorithms typical...

Digital audio is becoming increasingly popular in higher education with faculty digitally recording and broadcasting lectures for students to learn-on-demand. Students have discovered accelerated playback features in popular computer software and use it to reduce the amount of time spent listening to audio-enhanced instruction. In the current study, 183 undergraduates were randomly assigned to ...

Over the past few years, digital technologies have been growing in such a way that a new generation of audio broadcasting systems, fully digital, can now become cost effective. For this purpose Coded Orthogonal Frequency Division Multiplexing (COFDM) [1], a new transmission technique designed in Europe, is promising. In order to perform the evaluation of this system, we need an accurate channel...