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Application overview
As subscriber demand and government imperatives for high-speed Internet intensify, carrier networks are deploying point-to-point digital microwave radio systems to drive their broadband access strategies for remote business enterprises and subscribers in low-density and sub-urban environments. The systems are typically deployed where the speed or costs of deployment for wired, fiber, or satellite communications are not commercially feasible or viable due to distance, difficult terrain or harsh environments.

Applications:
Carrier Networks
Cellular and BWA Networks
Mobile Radio Networks
Private Networks
» Rural Broadband Access
Utility Networks

Commercial perspectives
This microwave radio solution enables carriers to [1] swiftly-build access networks and broaden the reach of broadband for remote townships, sub-urban communities and business enterprises such as resort hotels [2] reduce capital costs and realise revenue for transmission services over distance or difficult terrain to remote subscribers [3] leverage and profitably answer rural broadband access opportunities and imperatives.

Aprisa™ digital microwave radios
The 4RF Communications Aprisa digital microwave radio enables always-on connectivity to wired infrastructure and the transmission of Internet, voice and data traffic between two fixed points over distances up to 100 kilometres. The conduits transport a wide-range of broadband-enabled services including Internet, VPN and LAN interconnect, VoIP, video conferencing, web-hosting and E-business applications; and voice services for telephone and fax.

Aprisavantage
The Aprisa radio provides two key benefits to telecommunications companies and network operators seeking to develop broadband access strategies and extend connectivity in their networks.

Superior performance Sub 3 GHz licensed frequency bands enable extremely reliable transmission over long distances and difficult terrain, particularly over water and partly obscured paths. These regulated bands permit exclusive frequency assignment guaranteeing carrier-class performance and minimizing interference. The RF design integrates high-performance digital processing techniques including FEC (Forward Error Correction), interleaving and advanced radio equalization to minimize transmission degradation from interference and atmospheric effects. Sophisticated modulation techniques in the radio platform enable highly efficient transmission in narrow channels. This enables the optimisation of available spectrum where that resource may be limited and/ or expensive.

Greater flexibility The design of the Aprisa enables swift network integration and redeployment. The radio features an in-built multiplexer managing Internet, voice and data traffic. This multi-use platform enables the delivery of bundled Internet and voice services. It creates new revenue opportunities and reduces costs by eliminating the requirement for external equipment. Advanced plug-in, customer-configurable interface modules support circuit-switched 2-Wire POTS, E1/T1 transport and packet-switched IP/Ethernet.

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