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The project concerns defining, developing and evaluating a wideband and efficient multiple access scheme which fulfils the universal mobile telecommunication system (UMTS) requirements. Based on this scheme a specification for a UMTS radio interface is being defined and additional contributions prepared which will serve as inputs towards the UMTS standardization process taking the backward compatibility to 2nd generation mobile radio systems into consideration. The main focus of the project is the radio interface definition, validation and demonstration to meet all relevant operating environments and UMTS services from narrowband up to wideband data services. The project is developing a pair of base station demonstrators and mobile terminals to demonstrate the basic functionality of the FRAMES specification.
The FMA consists of two modes: wideband time division multiple access (TDMA) with and without spreading option ;wideband code division multiple access (CDMA). The FMA concept also includes harmonization towards GSM, as well as between the modes, mainly in terms of clock rates, carrier spacing, bandwidths and lower radio protocols. The FMA concept lends itself to the introduction of novel technologies, such as joint detection, multi user detection for interference rejection, advanced coding schemes as turbo codes and adaptive antennas which contribute to more efficient utilization of the UMTS frequency bands. The wideband carrier has capabilities to carry traffic from a few kbit/s up to 2 Mbit/s with fine granularity and selectable quality of service parameters. An adequate hardware platform has been selected to offer necessary bearer services to validate and demonstrate both high-speed packet data services, circuit switched services and the UMTS service flexibility. The hardware platform provides the validation of 2 Mbit/s. FRAMES is already contributing to standards bodies.
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