Broadband Communication Networks Lecture 2 PDF
Document Details
2021
Assoc.Prof.Dr.ibrahim khider
Tags
Summary
This document details a lecture on Broadband Communication Networks, specifically covering wireless channels, path loss, fading, and digital modulation schemes. The lecture, given by Assoc.Prof.Dr. Ibrahim Khider in September 2021, appears to be in lecture note format.
Full Transcript
Broadband Communication Networks Assoc.Prof.Dr.ibrahim khider September 2021 Lecture 2 Background on Wireless Channels and Digital Broadband Enablers Wireless Channel The wireless channel is affected by th following issues Pathloss Shadowing...
Broadband Communication Networks Assoc.Prof.Dr.ibrahim khider September 2021 Lecture 2 Background on Wireless Channels and Digital Broadband Enablers Wireless Channel The wireless channel is affected by th following issues Pathloss Shadowing Fading – Flat or frequency selective – slow or fast Wireless Channel Pathloss Wireless Channel Pathloss Wireless Channel Pathloss Wireless Channel Pathloss Wireless Channel Shadowing and Fading Wireless Channel Flat Fading Channels Wireless Channel Frequency-Selective Fading Channels Wireless Channel Frequency-Selective Fading Channels Information Theoretic Aspects Shannon limit A Review of Digital Modulation Schemes A Review of Digital Modulation Schemes Digital modulation is ideally suited to a multitude of communications applications, including both cable and wireless systems. Applications include the following: relatively low-speed voice-band datacommunications modems, such as found in most personal computers high-speed data transmission systems, such as broadband digital subscriber lines (DSL) digital microwave and satellite communications systems cellular networks Multiple Access Techniques Frequency-Division Multiple Access Multiple Access Techniques Frequency-Division Multiple Access Multiple Access Techniques Time Division Multiple Access (TDMA Multiple Access Techniques Time Division Multiple Access (TDMA Multiple Access Techniques Time Division Multiple Access (TDMA Multiple Access Techniques Code Division Multiple Access (CDMA) Multiple Access Techniques Code Division Multiple Access (CDMA