Use Case Shared Services in Ku-band, Mx-DMA versus MF-TDMA [A Tale of 3 Return Technologies, Part 3]

Tuesday 1 July 2014
Use Case Shared Services in Ku-band, Mx-DMA versus MF-TDMA [A Tale of 3 Return Technologies, Part 3]

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"A Tale of Return Technologies" is published in 3 parts. This is [Part 3], the final post. You can get an overview and background information by reading published intro article: "A Tale of 3 Return Technologies in 3 Parts".

In [Part 1] we demystified the Mx-DMA technology and clearly positioned it against MF-TDMA and SCPC return technologies. Mx-DMA combines the best qualities of SCPC and MF-TDMA return technologies over satellite and solves the difficult choice of having to select either of them.

In the second episode [Part 2] we demonstrated the Mx-DMA efficiency gains against SCPC through a typical leased line use case. By implementing fixed rate Mx-DMA, 35% bandwidth could be saved compared to SCPC. Adding statistical multiplexing to the equation increased the gains even up to 52%.

In this episode we will compare the Mx-DMA return technology performance against MF-TDMA in terms of efficiency gains.

 

Use Case Shared Services in Ku-band, Mx-DMA versus MF-TDMA

 By Koen Willems, Market Director at Newtec

Use Case MF-TDMA: Shared Services in Ku-band

In this second use case let us imagine the service provider offers shared and overbooked services in the return link over satellite for the 20 remote sites, spread over Sub-Saharan Africa. The satellite network parameters are the same as in the previous SCPC example (previous blog post link), except for the remote terminal BUC size:

  • Satellite location: -7.5°E
  • Transponder: 36 MHz Ku-band
  • EIRP: 45 dBW
  • G/T: 1 dB/K
  • MF-TDMA Terminal: 1.8m antenna, 4W BUC
  • Hub: 4.9m antenna in Geneva
  • Rain model: ITU-R P.618-10
  • System margin: 1 dB
  • Link availability: 99.8%

Figure 1: Example satellite network with Newtec Dialog HUB6501 1IF Hub Module and Newtec MDM3x00 modems

Figure 1: Example satellite network with Newtec Dialog HUB6501 1IF Hub Module and Newtec MDM3x00 modems

In the Service Level Agreement a 2 Mbps peak rate (PIR) has been considered for all remotes and three types of committed information rates (CIR) for the satellite network over a Ku-band transponder at 99.8% availability. Traditionally you would expect MF-TDMA to be the selected technology to handle these types of traffic, wouldn’t you?

In this scenario we will compare the MF-TDMA performance against Newtec’s Mx-DMA. When selecting MF-TDMA as the technology for the return link for the 20 remote sites running shared and overbooked services, a total satellite bandwidth of 7.76 MHz would need to be allocated. In this MF-TDMA network a 1.8m antenna and 4W BUC are put into operation.

Alternatively Newtec’s Mx-DMA only requires 3.89MHz to run the same throughput for the same PIR and CIR services. As such Mx-DMA, running on the Newtec Dialog platform, results in a 50% gain (see figure 2) compared to MF-TDMA technology.

Figure 2: Example satellite network with Newtec Dialog HUB6501 1IF Hub Module and Newtec MDM3x00 modems
Figure 2: Example satellite network with Newtec Dialog HUB6501 1IF Hub Module and Newtec MDM3x00 modems

Use Case Newtec Mx-DMA versus MF-TDMA Results

This use case clearly demonstrates the Newtec Mx-DMA benefit over MF-TDMA as return technology. For shared and overbooked services, the bandwidth saving of Mx-DMA HRC is even more than 50%, equivalent to serving more than double the number of customers in the same bandwidth.

Newtec Dialog, the platform which Mx-DMA is available on, will secure the future of operators, giving them the power to offer a variety of services while making hassle-free decisions on which technology to use. The Newtec Dialog provides the scalability, flexibility and efficiency required to run successful operations over satellite.

Efficiency is defined both at operational and technology level in the Newtec Dialog Platform. Satellite Service providers can select the best transmission technology for their particular application, service or traffic type.

For the return satellite link the service provider has the option between SCPC, MF-TDMA, or the best of both worlds, Newtec’s patented Mx-DMA™. The Newtec hubs and modems on the Newtec Dialog platform support all three return technology flavors.

If you want to read more on the Newtec Dialog Platform or on the Newtec Mx-DMA satellite return technology, I recommend the following links:

Or you can always contact your local Newtec representatives or send an e-mail to sales@newtec.eu.

Here you find an overview of all 3 parts.

Warm regards,

Koen


Koen Willems

Market Director at Newtec

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