A method for predicting interference into a narrow band receiver from portable, direct sequence, spread spectrum CDMA transmitters

The authors describe an algorithm that may be used to evaluate the interference that will be experienced by a narrowband receiver from emissions of several hundred low-power, randomly distributed, cochannel, spread-spectrum, portable transmitters. In addition to the algorithm, sample runs of a computer model using this algorithm are presented and discussed. This application of the algorithm shows that multiple spread-spectrum portable units with densities and output powers in the range of those studied in this example can have a serious effect on the signal-to-noise ratio of narrowband, cochannel receivers located in the same general area