Channel modeling and range extension for UWB communications using directional antenna in LOS and NLOS path loss models

Ultra-Wideband Technology (UWB) is increasingly being considered as an attractive solution for high data rate short- range wireless and position location applications. In this paper, we are investigating the role of directional antenna, which shows significant improvement in the range extension while sustaining high throughput. The experiment carried out is for two different path loss models (LOS and NLOS), which are show in the following sections. Research is needed for performance improvements using better modulation schemes, channel coding, antenna types, and/or Rake receivers. In this paper the M-array PPM modulation technique, Horn antennas have been used and simulation results are given in Figure 1-Figure 5.