The discrete-time canonical model of time-varying dispersive channels

In this paper, we researched on the model of time-varying dispersive channels in signal processing perspective, and proposed the new concept of discrete-time canonical model, This novel model is developed by canonically sampling the delay-Doppler spreading function of the time-varying dispersive channels under CDMA circumstance firstly. Then it is extended to common time-varying communication systems based on the multirate theory. In the end the proposed discrete-time canonical model is compared with two other typical deterministic Models of time-varying channels, and we get to the conclusion that this new model is better than the other two models for blind signal processing.