Effective Channel Shortening by Modified MSSNR Algorithm for Simplified UWB Receiver

In this paper, we present a modified version of the maximum shortening signal to noise ratio (MSSNR) algorithm for channel shortening in a time hopping (TH) pulse position modulated (PPM) ultra wideband (UWB) communication system. The proposed algorithm introduces two additional UWB channel related parameters in the optimization problem along with the conventional energy criterion. This modification significantly improve the performance of the conventional MSSNR algorithm and enables it to handle the extreme nature of channel shortening needed in UWB systems. We also derive a lower bound for bit error rate (BER) as a comparison bench mark. The proposed algorithm does not need any training or channel estimation and outperforms the conventional MSSNR algorithm in terms of different comparative parameters.