Updated: April 19, 2016
Typically we resort to one of two return technologies, opting for either MF-TDMA — which typically targets applications with bursty and potentially over-booked traffic services, such as Internet access for consumers and private SME, B2B and SCADA networks — or SCPC, which has more applicability in high data and video rate return links.
This also means that a large section of the market is caught up in the SCPC versus MF-TDMA dilemma.
At Newtec we identified the need for a link return technology that can combine the benefits of MF-TDMA and SCPC in a single technology suited for the plethora of applications. This technology is called Mx-DMA®.
You can see Mx-DMA live in action at NABShow 2016, book your demo now!
Five reasons to select Mx-DMA
Industry leading efficiency:
Optimal modulation techniques
Real-time dynamic bandwidth allocation:
On-demand and seamless carrier resizing
Highest availability at minimal cost:
Advanced adaptive power and bandwidth allocation
Lowest terminal CAPEX and size requirements:
Unique power and regrowth management
Unmatched operational simplicity:
Automated carrier planning and link budgets
Mx-DMA for Techies
Let’s start with a definition:
Mx-DMA = Cross-Dimensional Multiple Access technology
Mx-DMA cross-correlates and assigns in real-time: return frequency plan, symbol rate, modulation, coding and power based on return traffic demand, QoS management and channel conditions simultaneously for all terminals in the network. 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:
A Newtec scheduler looks at the whole of the return carrier population and determines the best means of transmitting each carrier
Carrier planning assigned over the return carriers will continuously adjust itself in real time
Based on return traffic demand:
When having a demand for more traffic in the return channel, the requesting terminal will automatically be assigned more space capacity
Effectively take advantage of statistical multiplexing and effectively overbook the return channels by having QoS in the return channels individually and also over the complete return channel pool
ACM is nothing new, even for return channels. But when applying Newtec’s FlexACM to certain return carriers that require it (by giving them more space capacity to maintain their SLA) in combination 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:
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 continuously adjusts all transmit parameters (like symbol rate and frequency).