Course11710411550 lectures
Principles of Modern CDMA/ MIMO/ OFDM Wireless Communications
Prof. Aditya K. Jagannatham · IIT Kanpur
About
The field of wireless communications has witnessed revolutionary technology developments in the last decade. While previously there existed only 2G GSM based communication systems which supported a data rate of around 10 Kbps, several radical wireless technologies have been developed in the last 10 years to enable broadband wireless access with rates in excess of 100 Mbps. These have subsequently led to the development of 3G and 4G wireless technologies such as HSDPA (High Speed Downlink Packet Access), LTE (Long Term Evolution) and WiMAX (Worldwide Interoperability for Microwave Access). This has been made possible through breakthrough wireless technologies such as Code Division for Multiple Access (CDMA), Orthogonal Frequency Division Multiplexing (OFDM), Multiple Input Multiple Output (MIMO).These techniques form the basis of understanding the world of 3G/4G wireless communication systems. This course will present an elaborate introduction to the principles and performance of these fundamental 3G/ 4G wireless technologies.
Intended audience: The intended audience is students, practicing engineers, technical and non-technical managers of telecom companies, students preparing for competitive exams with communication engineering subject
Prerequisites: Basic knowledge of - Probability, random variables, Digital modulation, BPSK, QPSK etc
Lectures
Week 1 : Introduction to Wireless Systems
- Evolution of Wireless Communication Technologies
- Modeling Wireless Channel
- Wireless Fading Channel Model
- Fading Channel Distribution
- Rayleigh Fading Channel
- Bit Error Rate (BER) Performance
- Bit Error Rate (BER) of AWGN Channels
Week 2 : Performance in Fading wireless channels
- Bit Error Rate of Rayleigh Fading Wireless Channel
- Exact BER Expression for Rayleigh Fading Wireless Channel
- Deep Fade Analysis of Wireless Communication
- Principle of Diversity
- Multiple Antenna Diversity
- Maximal-Ratio Combining
Week 3 : Multiple Antenna Wireless Systems and Diversity
- BER of Multiple Antenna Wireless Systems
- Approximate BER for Multiple Antenna Wireless System
- Examples for BER of Wireless Communication
- Deep Fade in Multi Antenna Systems
- Intuition for Deep Fade in Multi-Antenna System
- Definition of Diversity Order
Week 4 : Wireless Channel Characterization - Delay Spread and Doppler
- Max Delay Spread
- RMS Delay Spread
- Delay Spread and Inter Symbol Interference
- Coherence Bandwidth of Wireless Channel
- Mobility and Doppler Effect in Wireless Channels
- Impact of Doppler Effect on Wireless Channel
Week 5 : Principles of CDMA Wireless Communication
- Introduction to Code Division Multiple Access (CDMA)
- Chip Time and Bandwidth Expansion in CDMA
- Code Generation for CDMA
- CDMA Codes: Properties of PN Sequences
- BER of CDMA Systems
Week 6 : Principles of CDMA and MIMO Wireless Communication
- Analysis of Multi-user CDMA
- Multipath Diversity in CDMA Systems
- Near-Far Problem in CDMA
- Multiple Input Multiple Output (MIMO) Systems
- Examples of MIMO Systems
Week 7 : Principles of MIMO Wireless Communication (Continued)
- MIMO Receivers
- BER Performance of ZF Receiver
- Transmit Beamforming in MISO Systems
- Alamouti Code and Space-Time Block Codes
- BER of Alamouti Coded System
- Singular Value Decomposition (SVD)
- SVD in MIMO
Week 8 : Principles of OFDM Wireless Communication
Syllabus and materials
At NPTEL, as the course publishes them.
Credits and licence
- Institution
- IIT Kanpur
- Department
- Electrical Engineering
- Teacher
- Prof. Aditya K. Jagannatham
- Level
- Undergraduate
- Language
- English
- Subjects
- Engineering
- Source
- NPTEL
- Licence
- CC BY-NC-SA, as NPTEL states it. Non-commercial use only. NPTEL's terms
- Attribution
- NPTEL states: "Distributed under Creative Commons Attribution-ShareAlike / CC BY - NC - SA", beside a BY-NC-SA badge.
- Who can watch
- NPTEL gives no rating. Invisible Network shows it to Tweens profiles and older, judged from what the source says about it. How courses are placed