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| The IPSTAR user terminal is a highly integrated
satellite transceiver that enables low-cost broadband satellite access.
The terminal has been designed to be fully compliant with the IPSTAR
system specifications, offer low cost hardware, and ease of installation
and use.
The fact that the terminals are IP compatible allows interfacing
to a wide range of existing network applications, utilities, and
hardware. This results in a rich set of terminal configuration options
designed to fit the requirements of a heterogeneous user base.
Terminal Highlights include:
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- Cost optimized design
- Indoor Unit provides connectivity to Internet and voice
- Outdoor Unit consists of a small dish antenna with a Ku band
receiver and transmitter.
- Receiver data rates supported up to 4 Mbps.
- Transmitter data rates supported up to 2 Mbps.* Lower cost versions
for Internet access services will offer low return data rates
compatible with Internet browsing and VoIP
- Dynamic Link Allocation (DLA) combined with advanced power and
bandwidth efficient waveforms, allows the IPSTAR system to customize
links on an individual user basis.
- Forward link TOLL waveform for maximum flexibility and efficiency
- Return link STAR waveform automatically adapts to user traffic
characteristics to maximize capacity
- Advanced IP protocol enhancements for optimum performance over
IPSTAR/conventional satellites
- Make use of TCP accelerator - NettGain product - to optimize
system throughput
- Can be configured as always on system or manual login / logoff
system
- Software VoIP support and optional hardware phone handset
* Actual performance based on Link budget, Code & Modulation being
used in the System |
User Terminal Components Overview
A user terminal can be used as a stand-alone, dedicated single-user
platform or can be adapted into a shared hub terminal for a local
area network (LAN) system via an additional Ethernet port. The terminal
comprises of three components:
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- Indoor Units (IDU) or Satellite
Modem
The satellite modem provides all the baseband communication and
the control of outdoor unit. There are two form factors: IPSTAR
Satellite Terminal - Professional Series and Voice Series.
- Outdoor Units (ODU)
The outdoor unit connecting to the IDU provides two-way (transmit
and receive) radio communication. The IF and RF of the current
system design employ L-band and Ku-band frequencies, respectively.
The major components of the ODU consists of an antenna reflector,
feedhorn, block upconverter (BUC), LNB and diplexer/OMT.
- TCP Accelerator Client Software
The TCP accelerator software, NettGain that resides in the IPSTAR
terminal platform enhances the system performance since the accelerated
protocol overcomes the well-known problems of running conventional
TCP protocol over long satellite delay link.
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