Understanding Mobile Radio Propogation-4 — Lesson 4

This lesson covers the concept of mobile radio propagation, focusing on outdoor propagation models. It delves into the Log-Normal Shadowing model, explaining how to calculate different parameters related to it. The lesson also discusses the path loss exponent and sigma, and introduces the concept of outage probability, which is crucial for cell site planners. It further explains the percentage of coverage area, i.e., how many users can be covered with a base station placement. The lesson concludes with a brief introduction to outdoor propagation models, emphasizing the importance of outdoor measurement and estimation of coverage area.

Video Highlights

01:12 - Introduction to lecture 11 on mobile radio propagation, specifically outdoor propagation models
03:24 - Explanation of Log Distance Path Loss Model and its limitations
04:02 - Explanation of Log Normal Shadowing and its importance in modeling signal reception
09:04 - Discussion on the concept of outage probability and its calculation
11:01 - Explanation of how to calculate the percentage of coverage area in a cell
48:40 - Introduction to outdoor propagation models like macro cells, microcells, and street microcells
57:11 - Comparison between macro cells and microcells in terms of cell radius, transmit power, fading characteristics, delay spread, and max bit rate

Key Takeaways

- Log-Normal Shadowing is a crucial model in understanding mobile radio propagation.
- The path loss exponent 'n' and sigma are significant parameters in this model.
- Outage probability is an essential concept for cell site planners.
- The percentage of coverage area determines how many users can be covered with a base station placement.
- Understanding outdoor propagation models is vital for accurate outdoor measurement and estimation of coverage area.