Wireless Networks: Topic 05 - Fading, Multipath, and Power Delay Profile, Slides of Wireless Networking

Download Wireless Networks: Topic 05 - Fading, Multipath, and Power Delay Profile and more Slides Wireless Networking in PDF only on Docsity! Jan­Apr 2007 CS698T: “Wireless Networks: Principles & Practice”, Bhaskaran Raman, Dept. of CSE, IIT Kanpur Topic 05 CS698T Wireless Networks: Principles and Practice Topic 05 Fading, Multipath Bhaskaran Raman, Department of CSE, IIT Kanpur http://www.cse.iitk.ac.in/users/braman/courses/wless-spring2007/ Jan­Apr 2007 CS698T: “Wireless Networks: Principles & Practice”, Bhaskaran Raman, Dept. of CSE, IIT Kanpur Topic 05 Received Signal Strength ● It is a function of three components – Path loss – Long-term fading (slow) – Short-term fading (fast) Path lossd−  is in the range 3­4 log(dist) P at h- lo ss ( dB ) Jan­Apr 2007 CS698T: “Wireless Networks: Principles & Practice”, Bhaskaran Raman, Dept. of CSE, IIT Kanpur Topic 05 Channel Impulse Response Channel Impulse (Power vs time) Response (Power vs time) P∞ t0 Jan­Apr 2007 CS698T: “Wireless Networks: Principles & Practice”, Bhaskaran Raman, Dept. of CSE, IIT Kanpur Topic 05 Power Delay Profile Power Time Mean excess delay  Root Mean Square (RMS) delay spread  Jan­Apr 2007 CS698T: “Wireless Networks: Principles & Practice”, Bhaskaran Raman, Dept. of CSE, IIT Kanpur Topic 05 Measured Indoor Power Delay Profile Source: Wireless Communications, Theodore Rappaport