UWB channel blind estimation method based on channel shortening

In the channel blind estimation algorithm which exploits the first-order cyclostationarity in the received signal and performs circular deconvolution for Ultra Wide-Band (UWB) systems, there has a limitation that the duration of the channel must be less than the symbol duration. The problem can be effectively solved by using the channel shortening technique which compresses the length of the combined channel. After the combined channel has been estimated, the actual UWB channel could be recovered. Simulation results demonstrate that the channel could be well estimated even when the duration of the channel is larger than the symbol duration.