Dali’s all-digital RF ROUTER® platform transcends the capabilities typically associated with traditional RF over fiber Distributed Antenna Systems (DAS) to provide in-building and outdoor coverage and capacity. This revolutionary platform delivers more data throughput and is valued at the lowest Total Cost of Ownership (TCO).
With Dali’s patented digital signal processing technology, the RF noise floor is unaffected by fiber length. This allows for greater coverage reach without signal degradation. With Dali’s all-digital and software-configurable solution, the entire network can be commissioned, upgraded and maintained through a Graphical User Interface (GUI). This provides ease of installation with a reduced deployment time.
Dali’s digital DAS system is a two-tier architecture consisting of the host (headend) and a suite of remote units. RF signals from off-air, BDAs or base stations or combination thereof can be received. The RF signal is converted to a digital CPRI data stream in the host. Then the digital CPRI packet data stream is transported via single mode fiber, multimode fiber or copper, and received by the remote units. The remote units then convert the digital CPRI packet data stream back to RF and amplify the signal for delivery to the antennas. On the reverse path (uplink), the host and remotes perform the reverse functions and deliver the signals back to the corresponding off-air, BDAs or base stations as RF.
Dali uses a single optical transceiver for both uplink and downlink signals, which means that a single fiber can be used to transmit and receive signals using WDM, wave division multiplexing. In this way, the number of fibers required for any given deployment is reduced and this, in turn, reduces the cost of deployment and operation. Also, in the Dali network, a transparent 1-Gbps Ethernet channel on each fiber connection can be used to carry IP traffic from Wi-Fi access points or other IP devices such as webcams, electronic messaging boards, digital announcement systems, surveillance cameras, or other IP-based equipment. The Wi-Fi packet data is simply embedded into the CPRI packet data stream.