Multipath resolving with frequency dependence for wide-band wireless channel modeling

Multiple ray paths are resolved using high-resolution digital signal proces sing algorithms. The Cramer-Rao (CR) bound is used as a benchmark where a c ombination of the singular value decomposition method and the eigen-matrix pencil method is proven to be most successful. The conventional complex cha nnel model for wireless propagation is extended to include the frequency-de pendent feature of rays which can be used to classify the ray arrivals and provide physical insight of the channel. A novel complex-time model is used to approximate the suggested model. This approach is important to various applications such as equalizer, RAKE receiver, etc., in wireless communicat ion systems. Five key features (noise immunity, robustness, resolution, acc uracy, and physical insight) of the proposed algorithm are studied using nu merical examples.