Practical W-CDMA receiver and transmitter system design and simulation

As terminal system designers begin to get to grips with the air-interface technology of W-CDMA and the other IMT-2000 technologies, there is a demand for a system-level simulation environment that is truly cross-disciplinary. The 3G and software radio concepts require an unprecedented degree of amalgamation between RF and DSP technology-areas that traditionally have been well separated. This point is illustrated by way of examples of both receiver and transmitter system design using Entegra's "3G Design Suite" for SystemView by Elanix. First, an analysis of the UMTS terminal receiver noise budget and hence expected implementation margin is presented. Second, an example of a UMTS basestation transmitter simulation showing how RF amplifier requirements are strongly dependant upon the statistics of multiple-user W-CDMA waveforms.