One of the Core Technologies Driving Newtec Dialog. What Is Mx-DMA all About?

Thursday 6 March 2014
One of the Core Technologies Driving Newtec Dialog. What Is Mx-DMA all About?
It's not MX-DMA, but for sure a funky spectrum...

Article

by Dave Suffys, Sales Support Manager at Newtec

A new marketing name or a revolutionary new technology?

Is one of the new technology drivers behind Newtec Dialog yet another funky acronym devised by some clever marketing boys and girls? (sure, let ‘s select a name with an “x”… that sounds kinda techy).

Or is Mx-DMA more than that?  Is it the revolutionary technology that bridges the gap between dedicated and dynamic capacity we’ve been all waiting for? Let’s have a look at the definition for that:

Mx-DMA = Cross dimensional multiple access technology

It cross-correlates and assigns in real-time:  frequency plan, symbol rate,  modulation, coding and power  based on return traffic demand, QoS management and channel conditions for a terminal population.  With each carrier assigned to just 1 terminal,  highest return SCPC like efficiencies are achieved  while maintaining the flexibility of MF-TDMA.

A couple of things are worth noticing:

  • cross-correlate: so there is a scheduler that looks at the whole of the return carrier population that determines the best means of transmitting  each carrier
  • real-time: meaning that there is a kind of carrier planning that is assigned over the return carriers which is continuously changing
  • based on return traffic demand: simply by having a demand for more traffic in the return channel, the terminal with that request will be assigned more space capacity
  • QoS management: by having QoS in the return channels individually but also over the complete return channel pool, one can effectively take advantage of statistical multiplexing and effectively overbook the return channels
  • channels conditions: ACM is nothing new, even for return channels. But when applying ACM to certain return carriers that require it (by giving them more space capacity to maintain their SLA) combined with statistical multiplexing, one can truly do ACM and at the same time stick to the SLA without the need for extra buffer capacity
  • each carrier is assigned to just 1 terminal: meaning that each terminal gets its own dedicated SCPC return channel. Hence the SCPC efficiency so no need for guard times between “bursts”. There are no bursts, the carrier is always there. It simply changes all transmit parameters (like symbolrate and frequency) continuously.

So don’t worry anymore, there is no need to select a:

  1. pure TDMA system to take advantage of being able to handle bursty traffic
  2. pure SCPC system to take advantage of the higher efficiency and dedicated capacity
  3. dynamic SCPC system that brings up and tears down carriers depending on the need
  4. system that switches between TDMA and SCPC when the need arises (with a few mouse clicks)

= Just select Newtec Dialog.

1 Comments

Pravin Tembhare wrote

Last 6 lines have a real punch. Very good article.

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