- Wireless "Triple Play" Systems
- /Integrated Mmds And Wireless Itnernet Systems
Customer Installs
2.5 GHz System for Multi-channel TV and Two-Way Data
Cable AML has delivered the first BWA-2002D+ system to be installed in South East Asia. The system simultaneously broadcasts multi-channel analog and/or digital TV and provides two-way IP connectivity for High-Speed Internet Access and other IP high performance applications.
The system is based on Cable AML's broadband Transceiver Model TRX02-250C, a compact yet powerful unit which provides multi-carrier downstream capability and high-sensitivity upstream receive functionality specifically designed for wireless Internet service.
The macro-cell system is designed to provide 180- degree azimuth coverage to a distance of 20 Kms with a single base station. The base station also houses the TV headend and the NMS (Network Management System) for the two-way data system. All of the base station indoor equipment (transceiver, headend modem termination system and network management system) fits in a single enclosed rack.
The system allows operators to combine two services through a single base station infrastructure for maximum revenue at minimum capital deployment cost. Two revenue streams can be realized from different subscribers: multi-channel residential TV service and two-way high-speed Internet access for residential and institutional subscribers.
Two-Way Repeater Expands Coverage of Broadband Wireless System
Cable AML has delivered a bi-directional (two-way) repeater designed to extend service to a "shadow" area within the main beam of an MMDS system that simultaneously broadcasts one-way multi-channel video and provides two-way data service.
Cable AML's model IAR02-030 on-frequency, active, bi-directional repeater allows extension of coverage to areas not illuminated by the main antenna. Systems originally designed in a macro-cell configuration for multi-channel video distribution (MMDS) service often have pockets of subscribers which can not receive signals due to line-of-sight blockage from natural or man-made obstacles and/or topographic features such as mountains or depressions. Cable AML's two-way repeaters are designed to extend the reach of these systems to simultaneously provide multi-channel video and two-way data coverage.
The repeater was installed to illuminate the area near downtown Asuncion (Paraguay). The area includes most of the central business district, and it has a relatively low density of TV subscribers but a high-density of two-way data subscribers. Cable AML's repeater is a viable and cost-efficient approach to extending two-way data service to a high yield area.
The repeater, model IAR02-030, is a bi-directional, broadband, multi-carrier active repeater designed to operate upstream in the 2.150 to 2.162 GHz band and downstream in the 2.5 to 2.7 GHz band. Other models with higher power levels and at other frequency bands are available.
Broadband Wireless Access System Delivered in MMDS Band
Cable AML has delivered a BWA 2002 integrated broadband wireless access system. The BWA-2002 System is a full-duplex, two-way, fixed-wireless communication system operating in the MMDS / MDS frequency bands (2.500 to 2.686 GHz for downstream and 2.150 to 2.162 GHz for upstream).
The system is designed to co-exist with an existing multi-channel analog TV distribution service. Future upgrades under consideration include additional channels of two-way data and a digital upgrade of the multi-channel video system.
The main application of the system is for high-speed Internet access, although other IP-centric services such as LAN (Local Area Network) extension, VPNs (Virtual Private Networks) and VoIP (Voice over IP) can also be implemented depending on market conditions.
The BWA-2002 system utilizes the 2500 to 2686 MHz MMDS band for downstream transmission. The band is divided into thirty-one channels, each 6 MHz wide. Each downstream data channel has a throughput of 30 Mbps (using 64 QAM modulation format). The upstream channels are in the 2150 to 2162 MHz band. Upstream channels of 0.2 MHz to 3.2 MHz bandwidth can be implemented. Upstream data throughput is up to 5.12 Mbps with QPSK modulation or 10.24 Mbps with 16QAM-modulation.
As with any system developed by Cable AML, this BWA equipment was integrated at our Torrance facility and tested as a system.
When the testing was completed, the customer's engineering staff attended a comprehensive training program on system deployment, operation, and maintenance at the Cable AML factory in Torrance. The training was conducted under near operational conditions using the customer's own equipment. This approach to training serves to make field deployment and operation more effective.