An investigation of measured and simulated wideband channels with applications to 1.25 MHz and 5 MHz CDMA systems

Abstract

Fading of the wideband radio channel and its implications for CDMA RAKE receiver operation has been investigated using measured wideband impulse responses and simulations with an exponentially shaped channel model. The emphasis has been on systems with 1.25 MHz and 5 MHz bandwidth, and the reduction in fading variations as well as the increased complexity in terms of required RAKE correlator branches when increasing the bandwidth has been studied. An analysis of the consequences of fast power control has also been performed.