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CDS System Overview and Installation Training July 2009. CDS – Cellular Distribution System Improves cellular services in small to medium sized buildings. Works for 800-900 MHz and 1900 MHz frequency bands Easy to install 2U rack mount panel
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CDS – Cellular Distribution System Improves cellular services in small to medium sized buildings. Works for 800-900 MHz and 1900 MHz frequency bands Easy to install 2U rack mount panel Uses either RG6 (800-900MHz) or LMR400 (1900 MHz) low loss cables New OCC Product Overview
CDS Overview • Provides improved cellular communications to buildings of poor service, where good service is available outside the building. • Applies structured cabling concepts to support wireless communications. • Uses Distributed Antenna Technology. • Voice, Data and 3G supported services.
CDS Hardware Installed CDS Panel 2U 19’’ Rack Mount & Antenna Faceplate
CDS Antennas External Antenna / Dual Band Internal Antenna Faceplate Antenna
Broadband Antenna • Suitable for both 800-900 MHz and 1900 MHz applications. • Uses RF N-connector • Easily mountable in ceiling tile environment
What is a Distributed Antenna • Distributed Antennas Systems (DAS) use multiple antennas for a single radio. • DAS offer a distinct advantage of creating low loss signal pathways at specified locations. • Heavy Loss materials (metal walls, re-bar concrete) can be by-passed. • The 4 outputs from the CDS Panel and the faceplates are a distributed antenna.
CDS Architecture • External Antenna (Omni directional or high gain). • Cable to the panel from the extern (low loss coaxial cable – 5 dB). • Panel with bi-directional signal booster (65 dB Gain (37.5 Uplink and 37.5 Downlink channels) • Coaxial cable to the faceplate. (30 dB Loss) • Faceplate antenna (Omni directional)
Install Considerations • Available Power Outside is proportional to Maximum Power Inside. • Multiple providers may share frequency band • Lower loss cable translates into increased coverage range. • Antennas are frequency dependent.
DC Rooftop External Antenna Site Analysis Pennsylvania Avenue
CDS Install Criteria • Cell Phone Coverage must be good at a locale where the external antenna can be placed. • CDS Panel must support one of the approved service providers. • May determine frequency band from your service provider in your region www.wirelessadvisor.com
There are 3 Service Provider Bands in North America 824 – 896 MHz (Verizon, AT&T) CDMA 806 and 900 MHz (Nextel, Southern Link) TDMA 1840 – 1990 MHz (PCS providers) Supports voice and data communications, as well as 3G phones (AT&T verified) CDS Supported Technologies
3 Step Installation SMP CDS? • SMP CDS offers several distinct benefits: • Place the external antenna at an outside location with good service. • Install the internal antennas in proximity to areas where service is deficient. • Provide 120AC to the panel.
CDS Silver Spring Beta Test Site • Installed in Silver Spring, MD area. • 800-900 MHz Verizon and AT&T support. • Basement fill-in operational requirement in a 3 story building. • Installed October 2008 • 7 Story building currently being cabled for CDS installation at new facility next door.