Abstract
The single frequency network (SFN) is a popular solution in modern digital audio and television system networks for extending effective coverage, compared to its traditional single-transmitter counterpart. As benefits of this configuration appear to be obvious, this paper focuses on the exact analysis of so-called SFN gain—a quantitative effect of advantage in terms of the received signal strength. The investigations cover a statistical analysis of SFN gain values, obtained by means of computer simulations, with respect to the factors influencing the coverage, i.e., the protection level, the reception mode (fixed, portable, mobile), and the receiver location (outdoor, indoor). The analyses conclude with an observation that the most noteworthy contribution of the SFN gain is observed on the far edges of the networks, and the least one close to the transmitters. It is also observed that the highest values of the SFN gain can be expected in the fixed mode, while the protection level has the lowest impact.
Highlights
The digitization process observed in multiple areas of information and communication technologies (ICT) has influenced broadcasting systems and services
Entire websites can be delivered to a receiver using only the broadcast channel of digital audio broadcasting (DAB) [2]; Traffic Message Channel/Traffic and Travel Information (TMC/TTI)—a technology for delivering information on traffic and travel to vehicle drivers; Emergency Warning System (EWS), which comprises several tools and functionalities available in DAB, allowing for an immediate mass-alert of DAB listeners in an area inflicted by a natural disaster
Response to the protection layer is that when the highest protection, PL = 0.25, is enabled, the single frequency network (SFN) gain corresponding to the same probability p is higher than for the three other protection levels (2A–4A)
Summary
The digitization process observed in multiple areas of information and communication technologies (ICT) has influenced broadcasting systems and services. [1]; Slide Show (SLS) for displaying information and content from traffic information to song titles, album artwork, and station branding, in both video and text formats; Electronic Program Guide (EPG) for broadcasting information on the program timetable, often in a menu-based style; Broadcast Website (BWS), giving DAB multiplex operators the opportunity to use hypertext markup language (HTML) as a content format to support information services by using the concept of a “broadcast website” Due to this service, entire websites can be delivered to a receiver using only the broadcast channel of DAB [2]; Traffic Message Channel/Traffic and Travel Information (TMC/TTI)—a technology for delivering information on traffic and travel to vehicle drivers; Emergency Warning System (EWS), which comprises several tools and functionalities available in DAB, allowing for an immediate mass-alert of DAB listeners in an area inflicted by a natural disaster. It may use a vast scope of mechanisms available in DAB such as the automatic radio receiver “wake up”, audio notification of an incoming message, instantaneous messaging, video delivery, etc.; Surround Sound over DAB+, an audio code designed especially for DAB+ to transmit multichannel sound at stereo bit rates
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