PCS-Over-Cable System Modification Triples Call Capacity.NASHUA, N.H.--(BUSINESS WIRE)--Feb. 23, 1998--Sanders, a Lockheed Martin Company, has modified its PCS-Over-Cable system to handle up to three times the call capacity available in previous versions. PCS-Over-Cable is a distributed antenna system As defined by PCIA - the Wireless Infrastructure Association, and it's DAS Forum, A Distributed Antenna System ,or DAS, is a network of spatially separated antenna nodes connected to a common source via a transport medium that provides wireless service within a geographic area or that serves to speed the build-out of a Personal Communications Services See PCS. (PCS (1) (Personal Communications Services) Refers to wireless services that emerged after the U.S. government auctioned commercial licenses in 1994 and 1995. This radio spectrum in the 1. ) system, improve the wireless network, and avoid or augment traditional tower (macrocell) deployments. The Sanders system distributes the RF portion of the system by connecting transceivers, called Cable Microcell Integrators (CMI (Computer-Managed Instruction) Using computers to organize and manage an instructional program for students. It helps create test materials, tracks the results and monitors student progress. ), to a cable TV system. This latest development in Sanders' PCS-Over-Cable system improves its use in dense, high-call capacity environments. Each of the new multiple-carrier CMI units can now handle the same number of simultaneous calls as does a standard three-sector microwave tower. One CDMA (Code Division Multiple Access) A method for transmitting simultaneous signals over a shared portion of the spectrum. The foremost application of CDMA is the digital cellular phone technology from QUALCOMM that operates in the 800 MHz band and 1.9 GHz PCS band. tower sector has a capacity, conservatively, for handling 14 simultaneous calls, and Sanders' new three-carrier CMIs will accommodate up to 42 simultaneous calls. The new multicarriers will work with equipment which uses the Code Division Multiple Access (CDMA) protocol and can be adapted for coaxial cable TV or fiber network implementations. Sanders, an operating company of the Lockheed Martin Electronics Sector, is engaged in development, manufacture and sale of advanced electronic systems and products in a broad range of defense and commercial electronics markets. The company serves these markets through technologies that include wide-band radio, digital and analog communication systems, and very high speed real time digital signal processing See DSP. Digital Signal Processing - (DSP) Computer manipulation of analog signals (commonly sound or image) which have been converted to digital form (sampled). . CONTACT: Sanders Marv Braman, 603-885-2817 Joe Wagovich, 603-885-2816 |
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