Nanocells Intrasystem Interference Realistic Worst Case Analysis for Open Site Personal Communication Scenarios

Abstract

The exponential growth in mobile communications is followed by the development of new generations of Personal Communication Systems (PCS). Numerous research activities and papers have been published on PCS but only a few deal with the Electromagnetic Interference (EMI) affecting those systems. This paper presents a realistic worst case analysis and computation of the PCS intrasystem interference effects on open site nanocell scenarios. The operation range is up to 200m, usually under Line of Sight (LOS) propagation conditions where intrasystem interefering signals are maximum. Analysis and computation results are provided for a typical second generation cordless PCS CT-2 telephone (telepoint) operating in the 900 MHz frequency band. The computations show that for most cases of nanocell open site, intrasystem interference can be neglected, except for a few cases of single tone spurious. The good perfomances is due to PCS advanced Digital Signal Processing (DSP) technology advantages using Adaptive Power Control (APC) to optimize transmitter power requirements and to Dynamic Channel Assignent (DCA) electing the best signal to noise and intereference channel available.