BEAM HOPPING EMULATOR


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SatixFy has developed a Beam Hopping Emulator, based on its advanced SX3000 SDR ASIC. The Emulator enables research, development integration and testing of various aspects of the Beam Hopping architecture using SatixFy’s and other vendors’ commercially available terminals. Customers can use the Emulator to demonstrate the physical layer functionality over a wide range of scenarios.

The Emulator is key for any satellite operator, payload manufacturer and ground equipment manufacturer, for testing and analysis of the emerging Beam Hopping technology. It is also a very helpful tool in supporting customer demonstration of Beam Hopping system advantages, such as:

  • Full beam hopping system functionality
  • Service flexibility and reduced unmet demand
  • Payload design optimization
  • Increase total capacity
  • Test equipment homologation

Beam-Hopping Testbed

SatixFy is developing a testbed for a beam hopping, to mitigate the risk involved in its implementation by putting in place a beam hopping testbed based on existing hub and terminal hardware, which will be modified and enhanced in functionality to serve as a beam hopping testbed.

The testbed will have some purposes and phases:

Phase 1. The initial purpose of the testbed will be principally Layer 1 validation, to test the functionality of using DVB-S2X superframe structure as a physical layer enabler for beam hopping and looking at timing and synchronization.

Phase 2. additional critical components tests of the architecture, such as directing traffic to appropriate beams (S2X Frame Formatter) and managing system quality of service.

Phase 3.  Integration with a beam-hopping payload prototype from a satellite manufacturer. Validation of timing synchronization between hub and payload.

In all cases, the Testbed will generate traffic from a single teleport going over an emulated satellite link at L-band. Phase 1 will focus on the ability of the terminals to handle traffic when receiving a non-continuous downstream successfully.  The hub will suppress transmission to emulate beam hopping, and the traffic generator will alternate traffic between the remotes.  Phase 2 will upgrade the hub equipment to validate beam hopping in conjunction with the quality of service.   Phase 3 will only proceed with the cooperation of the selected satellite manufacturer and will require a lab prototype of the beam-hopping payload.

A schematic overview of the phase 1 of the testbed is shown in Figure 3.  A standard PC serves as the IP traffic source connected to a GW emulator.  The router will route the incoming packets to different beams, simulated by standard modulators, each would form the required physical layer frame or superframe) and forward the data, in its turn, via a satellite channel emulator, to a demodulator. The output IP traffic would be analyzed by the Test server.

This testbed can be used together with a satellite operator to demonstrate Beam Hopping (internally and externally), compare the performance with and without BH, compare different types of superframes, analyze the impact of different BH schedules.

Beam Hopping Emulator Overview

The Emulator first release enables validation and demonstration of the forward link Layer-1(PHY) most critical Beam Hopping elements:

The Emulator is key for any satellite operators, payload manufacturers and ground equipment manufacturers for testing and analysis of the emerging Beam Hopping technology. It is also a very helpful tool in supporting customer demonstration of Beam Hopping system advantages, such as:

  • DVB-S2X super-frame type 4 structure as a physical layer enabler for Beam Hopping.
  • Demonstration of different Beam Hopping parameters such as:
    • Modem performance
    • Hopping period
    • Dwell time
    • Switching time
    • Guard time
    • Non-standard super-frame
  • Testing the TT&C Beam Hopping management interface to the satellite payload and baseband systems
  • Optional Satellite Link Emulator for advanced RF impairment

Additional features such as Return link, Mobility, VLSNR will be added in future versions

For more information and a demonstration, please contact SatixFy


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