LDPC return channel for exceptional performance.Download (192 KB)
The HX50L is the cost effective and highly scalable HX terminal which also features support for LDPC coding (same as used in the DVB-S2 standard) on the return channel as well as support for C-band operations. With Quality of Service (QoS) features such as Min CIR with Max Rate together with dynamic allocation of bandwidth the HX50L delivers the QoS demanded by the most rigorous end users. With integrated IP features including NAT/NAPT, DHCP, RIPV1, RIPV2, BGP, and DNS server relay functionality, together with TCP acceleration and a high- performance satellite modem, the HX50L is the ideal platform to enable broadband IP connectivity for a variety of applications including Internet access, MPLS extension services, virtual leased- line services, and other high-bandwidth solutions.
The HX System provides true IP broadband connectivity via satellite. The HX System is based on a “star” network topology where the outbound channel is DVB-S2 with Adaptive Coding and Modulation (ACM). The return channel of the HX System is multi- frequency FDMA/TDMA using the IPoS standard for broadband over satellite. With a DVB-S/DVB-S2 outbound carrier and transmit rates up to 3.6 Mbps, the HX50L provides a cost effective and highly scaleable solution for satellite broadband networks.
Efficiency and flexibility in utilizing satellite bandwidth are at the core of the HX50L design. Each link can be configured to provide a QoS tailored to the requirements of the remote site. This includes adaptive Committed Information Rate (CIR) and Constant Bit Rate (CBR) services that provide guaranteed bandwidth though optimizing use of the bandwidth during periods of idle or light traffic. Remote sites with less stringent bandwidth requirements or service level agreements can be configured for best effort service, thereby allowing service providers to develop a service tailored to their customers’ specific requirements. In addition, the HX System bandwidth allocation scheme uses Aloha channels for initial bandwidth assignment which results in very efficient use of space segment. This frees up unused bandwidth and allows an operator to make more efficient use of space segment resources.
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