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CELLULAR
KSA has had substantial involvement in the emerging digital cellular industry. We have developed hardware, software and management systems which enable Personal Communications Services as well as more traditional cellular applications. Here are highlights of some completed and ongoing product development efforts:
For a world leader in cellular telecommunications product development and manufacturing, KSA is currently performing system engineering and specifying, architecting and implementing several subsystems associated with deployment of the next generation cellular telephone technology, Wide Band CDMA (W-CDMA). System specifications are similar to emerging European GSM standards.
KSA engineers are working on the development of W-CDMA Base Telecommunications Stations (BTS) which will be installed in the cell sites. The BTS is made up of several state-of-the art Digital Signal Processors (DSP's) operating in parallel at high speeds. KSA engineers are developing the software and the algorithms for these DSP's.
The specific technologies being developed by KSA's engineers also include the development of software for the implementation of "smart antennas", implementation of the Viterbi algorithm, Time Division Multiplexing (TDM) intercommunication of the DSP's, development of software for parallel TMS320C548 DSP's that manage, encode and decode the high-speed Data, Voice, and Control Channels, and "Transmit" and "Receive" DSP's which interface the BTS controller to the Mobile Control Center.
KSA engineers have also designed, coded, and unit tested DSP software for the Paging Channel. The Paging Channel is used by the BTS to transmit system parameters to a mobile station. The software is written in C on a TMS320C548 DSP.
On another W-CDMA DSP development project, KSA engineers are optimizing and implementing a version of the Viterbi digital data decoding algorithm to enable large amounts of data to be decoded using minimal amounts of memory.
KSA is also developing an ATM board which performs all the ATM functions on the network interface side of the BTS. This card has a Motorola MPC860MH processor for data processing and an MPC860 SAR for ATM frame formatting. The network physical layer interface is through the TDM bus over T1. KSA is also specifying the next generation of the above card, which will contain a Firewire Bus which will replace the TDM bus.
On a system integration and test effort for a major manufacturer of cellular telephones, a team of KSA engineers developed test plans and conducted system integration tests for a dual-mode (CDMA and AMPS), dual-band personal hand-held portable communication device based on IS-95A.
Other cellular development efforts include:
• Specified, architected and designed a T-3 multiplexer which interfaced cellular base stations to wireline (LEC) central offices
• Architected a CMIP-based microcell network management system for a large cellular access provider. Assisted the manufacturer in selecting software development methodologies, languages, tools, etc., for that system
• Developing new, and upgrading existing, cellular operations systems which integrate traditional cellular base stations and microcell technology, utilizing object-oriented software development methodologies and Windows NT, as opposed to UNIX, as an operating system
• Integrating, debugging, testing and validating (per FCC Airwave standard) AMPS software onto a digital personal communications system (PCS) handset.
We will be pleased to assist your product development efforts. For more information: Contact Us