UPLINK: Maximizing Satellite Transmission Efficiency
Maximizing Satellite Transmission Efficiency With DVB-S2
by Yan Mostovoy
Cost-effective transmission of high quality content is one of the primary business challenges facing broadcasters and system operators today. Using traditional standards, even premium subscription fees cannot possibly support HDTVs high bandwidth requirements. New standards and technologies that maximize bandwidth usage efficiency are essential for profitability.
The new, bandwidth-efficient DVB-S2 (EN302307) standard is designed to address this challenge. DVB-S2, the successor of DVB-S and DVB-DSNG, provides second generation framing structure, channel coding and modulation systems that are optimized for HDTV broadcast, interactive services, news gathering and other applications. Support for DVB-S2 impacts transmission systems (modulators) and reception systems (IRDs) only: Encoding, transrating, scrambling, and other processing tasks are not affected.
DVB-S2 is ideal for both satellite contribution and satellite news gathering (SNG). Configurations include encoders and DVB-S2 L-Band/IF modulators at the broadcast site, and professional decoders at the studio site.
DistributionTerrestrial and Cable Headends
With DVB-S2, broadcasters can transmit multi-channel content to cable headends and analog terrestrial transmitters more efficiently and cost-effectively. DVB-S2 optimizes transponder power efficiency by enabling operators and broadcasters to transmit multiple transport streams within a single carrier signal to multiple DVB-T transmitting sites.
For distribution to cable headends, DVB-S2s higher bit rates increase the number of programs that are delivered over the same bandwidth, without quality degradation.
At the distribution site, the content is encoded and statistically multiplexed before being modulated for transmission. At the cable headend, a professional decoder receives the content for transmission to customers via cable.
A DVB-S2 Solution From Scopus
Scopus delivers end-to-end DVB-S2 transmission and receiving solutions for satellite contribution, SNG and distribution to terrestrial and cable systems. Scopus solutions support broadcasters and system operators at both transmission and reception sites with world-class encoders, L-Band/IF modulators and professional decoders that are designed to work together. Next-phase satellite contribution and SNG configurations integrate an L-Band/IF modulator within the encoder for a more compact solution.
Scopus solutions fully support DVB-S2 professional and broadcast modes. The Scopus product line includes a wide variety of products with valuable feature sets, including: DVB-S2 Professional IRDsDVB-S2 ModulatorsDVB-S2 DSNG Encoder
Mr. Yan Mostovoy has served as Scopus AVP of Product Marketing for the past 4 years. He previously held the position of Scopus IRD Product Marketing Manager for 3 years. Before joining Scopus, Mr. Mostovoy served in the Israeli Air Force as the head of an aircraft electrical design group , with the rank of Major. Mr. Mostovoy holds a BSc in Electronic Engineering and an MBA from Tel -Aviv University.