Wireless Channel: Multipath Effects & Modulation

This lecture covers the wireless channel, focusing on the multipath effects caused by reflections and delays, the importance of understanding modulation techniques like BPSK and QAM, and the impact of noise and attenuation on signal transmission. The instructor explains how the channel adds noise, delays the signal, attenuates its power, and rotates its phase, emphasizing the need for channel estimation and correction. The lecture also delves into the concepts of delay spread, coherence bandwidth, Doppler spread, and coherence time, highlighting their significance in designing efficient communication protocols for high-speed mobile networks.