EL 6033 Modern Wireless Communication Techniques and Systems

Multiple Access and Multiplexing Techniques; Spread spectrum and Code division multiple access (CDMA) techniques: Direct sequence, Frequency hopping; Multicarrier techniques: Orthogonal frequency division (OFDM) and Multicarrier CDMA (MC-CDMA).

Prerequisites: EE 3404 and EL 6303


Syllabus

Lecture 1: Multiple Access and Wi-Fi Signals (CDMA & OFDM)

  1. Wireless Multiple Access and Multiplexing Techniques

  2. Time-Domain and Frequency-Domain Analyses of Signals and Systems

  3. Example 1: Direct Sequence Spread Spectrum (DSSS) in IEEE 802.11b Wireless Local Area Network (WLAN)

  4. Example 2: Orthogonal Frequency Division Multiplexing (OFDM) Signals in IEEE 802.11a Wireless Local Area Network (WLAN)


Lecture 2: Wireless Channel, Spread Spectrum and Random Variable

  1. Spread Spectrum Techniques

  2. Wireless Channel Parameters (Delay Spread and Doppler Spread)

  3. Comparison between Signal (OFDM & CDMA) Parameters and Channel Parameters

  4. Brief Reviews on Random Variables and Probability Modeling


Lecture 3: Direct Sequence and Spreading Codes

  1. Direct Sequence Spread Spectrum Techniques

  2. Walsh Code

  3. Pseudo Random Code

  4. Mean and Variance of Random Codes


Lecture 4: Synchronous CDMA

  1. Auto and Cross Correlations of Spreading Codes and Signals

  2. Synchronous Code Division Multiple Access (CDMA) Systems

  3. Bit-Error-Rate Analysis of Synchronous CDMA Systems


Lecture 5: Asynchronous CDMA

  1. Asynchronous CDMA Systems

  2. Multiuser Interference Analysis and Chip-shape Function Design

  3. Bit-Error-Rate Analysis of Asynchronous CDMA Systems


Lecture 6: Rake Receiver, Capacity Analysis & Power Control

  1. Multipath Effects (Delay Spread and Distortion) and Rake Receiver Approach

  2. Capacity Analysis of Cellular CDMA Communication Systems

  3. Power Control in CDMA Communication Systems


Midterm Exam

Lecture 8: OFDM Basics

  1. Multi-carrier Communications and Orthogonal Frequency Division Multiplexing (OFDM) Techniques

  2. Spectrum Analysis of OFDM Signals and Digital Signal Processing Implementation of OFDM Systems

  3. Capacity Analysis and Practical OFDM Systems


Lecture 9: Multipath Effects on OFDM

  1. Multipath Effects (Intersymbol Interference) and Cyclic Prefix Approach

  2. Multipath Effects (Frequency Selective Fading) and Frequency Domain Equalization

  3. Bit-Error-Rate Analysis of OFDM Systems in Time Invariant Channels.


Lecture 10: Fading & MC-CDMA

  1. Frequency Selective Fading, Diversity Combining Techniques and Coded OFDM Systems

  2. Multipath Effects (Frequency Selective Fading) and Multicarrier CDMA Systems

  3. Bit Error Rate and Capacity of Multicarrier CDMA Systems


Lecture 11: Channel Estimation

  1. Auto-correlation and Power Spectrum of Random Processes

  2. Multipath Effects (Frequency Selective Fading) and Channel Estimation in Frequency Domain

  3. Doppler Effects (Time Selective Fading) and Channel Estimation in Time Domain


Lecture 12: Intercarrier Interference

  1. Intercarrier Interference and Bit-Error-Rate Analysis of OFDM Systems in Time Varying Channels

  2. Carrier-Frequency Synchronization Using Cyclic Prefix

  3. Peak to Average Power Ratio Analysis and Mitigation


Lecture 13: UWB & Others

  1. Ultra Wideband (UWB) Communications

  2. Radio Frequency IDentification (RFID) Technology

  3. Miscellaneous Modern Wireless Communication Techniques and Systems


Final Exam

Textbook: None. Course materials will be provided.