On the use of multicarrier direct sequence spread spectrum systems

The authors propose a multicarrier direct sequence spread spectrum system. By using this system, it is possible to get not only robustness against multipath fading, but to also achieve narrowband interference suppression; these advantages are obtained without the use of either an explicit RAKE structure or an interference suppression filter. The authors evaluate the performance of this system over both a frequency selective Rayleigh fading channel, and an additive white Gaussian noise channel in the presence of single tone interference