Cable AML has delivered two TRX28-130 base station transceivers and two OAR28-001 broadband outdoor repeaters to Terminales de Telecommuicaciones Terrestres in Spain. The high-powered gear will be used in a new network that will begin operations in Lisbon, Portugal and gradually spread throughout the country.
The advanced broadband network uses the Digital Video Broadcast-Terrestrial (DVB-T) encoding standard to deliver multi-channel video and next-generation Internet, interactive TV services, telephony and residential video conferencing.
The second-generation base station utilizes high power Traveling Wave Tube (TWT) technology, which is widely used in satellites because of its reliability and high efficiency. Low-cost repeaters extend the range of the base station, enabling the near non-line-of-sight (NLOS) network to reach as much as 90 percent of potential urban customers at an economically viable cost.
The broadband high power Base Station Transceiver accepts 14 digitally modulated carriers. Each has a data rate of 30 Mbps for a total downstream capability exceeding 500 Mbps.
The hardware incorporates several enhancements, including Global Positioning Satellite (GPS) frequency-locking capability for remote synchronization. This is a requirement imposed by the Orthogonal Frequency Division Multiplexing (OFDM) modulation used by the digital TV carriers in the system.
The two-way solid-state repeaters do not require expensive re-generation equipment. A flexible design allows the input and output sections of the receivers to be mounted at varying distances from each other. This means that they can be located on ordinary rooftops without the need for elaborate towers or structures.
Developed by The Dhwalin