DISTRIBUTED ANTENNA SYSTEMS
Americans have become accustomed to having their mobile phones provide quality service wherever they go. Yet it is not surprising to most cell phone users that their mobile phone will provide only minimal or sporadic service in most buildings. There are varying reasons for desiring in-building cell phone service, ranging from routine conversations to emergency calls. By providing high quality in-building mobile phone service, property owners will gain the advantage of increased occupancy rates within their properties. Don’t churn your tenants over to the competition due to the lack of reliable in-building cell phone service.
A well designed off-air DAS system starts with a good strong signal at the donor antenna output port; then, by employing good engineering practices and maintaining a high signal-to-noise ratio throughout the internal infrastructure, a strong signal is assured at each internal distributed antenna. Another important feature of a well-designed DAS is to keep the noise levels under control so that the amplifiers are amplifying signal, not noise. Improved noise control will lead to a reduction in the number of bi-directional amplifiers required. Today’s DAS networks must provide clear high-quality mobile phone service for a wide range of technologies including: 4G LTE, UMTS, GSM, GPRS, E-GPRS, EDGE, EV-DO, IS-95, CDMA 2000, and in some locations the older technologies such as IS-136.
While a top-level cost estimate can be done with only preliminary data, such as venue size and type of construction, a thorough on-site-inspection using a spectrum analyzer to determine if sufficient signal is available is required to provide a full-fledged design. After the site visit data is received, a preliminary pen and paper design will be followed by a detailed computer aided design using iBwave software.
O-MC Signal Research offers advanced in-building design and development that will enhance the performance of all mobile phone carriers in any interior venue, ranging from hotels, apartment buildings, office buildings, tunnels, subway stations, subway cars, malls, warehouses, or factories. Our design principles provide the ability to include public safety systems for police, fire, and other signals onto our networks.