DVB-RCS Demodulator From Digilogic Systems

Digilogic Systems DVB S2 / RCS SATCOM Hub is a highly efficient and top-performing solution, empowering the utilization of high symbol rates on contemporary FPGAs.

The DVB S2 hub can accommodate up to 30 mega symbols per second with 11 code rates and supports both QPSK and 8PSK modulation schemes. Whereas, the DVB RCS hub accommodates up to 4 mega symbols per second with 5 code rates and supports the QPSK modulation scheme.

Our Digilogic Systems SATCOM hub can handle up to 50 terminals and extend further if needed.

To obtain further information on the DVB S2 RCS SATCOM hub, click on the below links.
DVB-RCS Demodulator = https://bit.ly/3KFCwNF

To request a quotation (or) for more details, Contact us.
Phone: [phone]
Email: [email protected]
Web: www.digilogicsystems.com

1. DVB-RCS Demodulator
Introduction
Satellite communications form the backbone of global connectivity,
bridging distances where terrestrial networks cannot reach. To ensure
efficient, high-speed, and reliable communication, modern satellite
technologies rely on advanced modulation and demodulation
techniques. Among these, the DVB-RCS (Digital Video Broadcasting –
Return Channel via Satellite) standard plays a critical role by enabling
interactive satellite services with robust return channel capabilities. At
the heart of this technology lies the DVB-RCS Demodulator, a device
designed to decode signals transmitted from user terminals back to
the hub station. Digilogic Systems, with its expertise in cutting-edge
satellite communication solutions, offers a highly efficient DVB-RCS
Demodulator engineered to meet the evolving needs of defense,
aerospace, and commercial communication industries.

1

2. What is a DVB-RCS Demodulator?

DVB-RCS Demodulator is a specialized receiver that processes and
decodes signals sent via the return channel of a DVB-RCS compliant
system. Unlike traditional DVB-S (Digital Video Broadcasting –
Satellite) systems that primarily provide one-way broadcasting,
DVB-RCS supports two-way communication, enabling interactive
applications such as satellite internet, real-time data transfer, and
secure communications.

The demodulator is responsible for:

●​Extracting the transmitted data from the modulated satellite
signal.
●​Correcting for errors introduced during transmission.
●​Delivering a clean, usable data stream to the hub or central
processing system.

In essence, it ensures the accuracy, reliability, and efficiency of the
return communication link in a DVB-RCS system.

How does the Digilogic Systems DVB-RCS Demodulator work?
Digilogic Systems has designed its DVB-RCS Demodulator with
advanced signal processing techniques, leveraging FPGA (Field
Programmable Gate Array) technology and high-speed DSPs (Digital
Signal Processors) for real-time performance.
Here’s how it works step-by-step:
2

3. 1.​Signal Reception – The incoming modulated RF signal from the
satellite is captured and down-converted to an IF (Intermediate
Frequency).
2.​Synchronization – The demodulator performs timing and
frequency synchronization, aligning itself precisely with the
received waveform.
3.​Demodulation – Using supported modulation schemes (such as
QPSK), the raw symbol stream is extracted.
4.​Channel Decoding – Advanced error-correcting codes like Turbo
Codes are applied to correct transmission errors caused by noise,
interference, or atmospheric effects.
5.​Output Data Stream – The clean, error-free data is forwarded to
the hub processor for further use in applications such as satellite
internet or secure communications.
Digilogic’s design ensures low latency, high throughput, and robust
performance, even in challenging satellite link conditions.
What symbol rates can the Digilogic Systems DVB-RCS Demodulator
handle?
Digilogic’s DVB-RCS Demodulator is built to handle a wide range of
symbol rates to accommodate diverse communication requirements. It
typically supports:
●​Low symbol rates (hundreds of ksps) for narrowband and
low-data-rate applications.
●​Medium symbol rates (several Msps) suitable for general-purpose
return channels.
●​High symbol rates (tens of Msps) for broadband interactive
services and high-throughput satellite links.
3

4. This flexibility allows the Digilogic solution to adapt seamlessly across
commercial, defense, and space applications, ensuring compatibility
with varied DVB-RCS system deployments.





How does Digilogic’s DVB-RCS improve upon the previous DVB-S
standard?
The traditional DVB-S standard was designed primarily for one-way
broadcasting, such as television and radio distribution. While effective
for downlink, it lacked support for user interactivity.
4

5. Digilogic’s DVB-RCS Demodulator addresses this limitation by enabling
a return channel, providing the following improvements:
●​Two-way communication → Supports interactive applications
like satellite broadband and real-time data services.
●​Efficient bandwidth usage → Dynamic bandwidth allocation
ensures optimized use of satellite resources.
●​Advanced error correction → Improves signal reliability under
adverse conditions.
●​Scalability → Handles multiple users transmitting simultaneously
with minimal interference.
This leap from DVB-S to DVB-RCS is transformative, shifting satellite
systems from passive broadcasting to interactive, high-performance
communication platforms.
Applications
The Digilogic DVB-RCS Demodulator finds applications across diverse
domains:
●​Satellite Internet → Enables broadband access in rural, remote,
or maritime areas.
●​Defense Communications → Provides secure, real-time
connectivity for military operations.
●​Aerospace → Supports inflight communication systems and
mission-critical telemetry.
●​Disaster Recovery → Facilitates emergency communication in
areas where terrestrial networks are damaged.
●​Enterprise Networks → Ensures reliable connectivity for remote
business locations.

5

6. Features
●​Wide symbol rate support (from narrowband to broadband).
●​FPGA and DSP-based architecture for real-time signal
processing.
●​Robust error correction with Turbo Coding.
●​High sensitivity and low noise figure for enhanced reception.
●​Compatibility with DVB-RCS standards and flexible integration.
●​Scalable design to support multiple channels and terminals.
Benefits
●​Reliable Communication → Ensures error-free data transfer
under harsh link conditions.
●​Flexibility → Adapts to varied satellite applications with scalable
symbol rates.
●​High Performance → Offers low latency and high throughput.
●​Future-Proof → Complies with industry standards while
supporting advanced technologies.
●​Operational Efficiency → Optimizes bandwidth usage, reducing
communication costs.
Conclusion
The DVB-RCS Demodulator is a cornerstone technology in modern
interactive satellite communication systems. By enabling a reliable
return channel, it extends the capabilities of DVB-S and opens new
opportunities in broadband internet, defense communication, and
beyond.
Digilogic Systems, with its advanced design and engineering expertise,
delivers a robust, high-performance DVB-RCS Demodulator that
ensures flexibility, scalability, and efficiency for demanding
applications.
6

7. Contact us today to discuss your DVB-S2 demodulator requirements:
Website: www.digilogicsystems.com
Phone:
Hyderabad: ([phone] / 02 / 03
Bengaluru: ([phone]
Email: [email protected]

Locations:
HEAD OFFICE
#102, 1st Floor, DSL Abacus Tech Park Beside DSL Virtue Mall, Uppal,
Hyderabad, Telangana-500039, India
BRANCH OFFICE
#216, 3rd floor, Zareen Heights, Varthur Road, Nagavarapalya, C. V.
Raman Nagar, Bengaluru, Karnataka — 560093.

7