Satellite Sound Broadcasting Around 1 GHz

Secondary Terrestrial Use of Broadcasting Satellite Services below 3 Ghz

Secondary use of the satellite spectrum by a terrestrial system is studied in this paper, focusing on broadcasting satellite services. Both spectrum sensing based access and database based access are discussed. Link budget analysis is used to define operational limits for spectrum sensing and transmission power control when the primary system is a digital video broadcasting – satellite services...

Digital satellite broadcasting system with flexible configuration (television, sound and data)

SonicData: Broadcasting Data via Sound for Smartphones

SonicData is a technique for broadcasting data to smartphones via audio streams using phone’s built-in microphone. SonicData augments an audio stream in the environment with nearly inaudible high-frequencies, allowing data to be sent to any smartphone in the vicinity using regular speakers and without any need for special hardware and software infrastructure or handshaking requirements. We deta...

Digitising VHF FM sound broadcasting with

This paper summarizes and discusses findings on compatibility of the forthcoming DRM mode E into classical VHF FM sound broadcasting. The results are based on theoretical considerations, lab measurements, field trials and radio network planning exercises. In addition, the status of the ongoing work towards a comprehensive DRM mode E coverage study including first results hereof are given.

Maximizing service availability for secure satellite broadcasting

Cryptography is the most suitable technique to protect the access to subscribed value-added services for mobile applications provided through satellite broadcasting (e.g. localization and mobile TV). However, if a temporary loss of signal is experienced by receivers, not only the data streaming is compromised, but also the key management-related messages. Hence, when the signal is received agai...