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Spread Spectrum Communications and Jamming

Spread Spectrum Communications and Jamming. Instructor: Prof. Debarati Sen, GS Sanyal School of Telecommunications, IIT Kharagpur. This course introduces basic principle of spread spectrum techniques. Originally adopted in military networks as a means of ensuring secure communication when confronted with the threats of jamming and interception, spread spectrum systems are now the core of commercial applications such as mobile cellular and satellite communications. Over the years, the most successful implementation of spread spectrum communication in commercial world lies in CDMA 2000, WCDMA and UMTS, WLAN, Ultra Wideband Communications (UWB), Body Area Networks, and energy efficient future generation Millimeter Wave (mmWave) communications. The present course introduces basic principle of spread spectrum techniques, key concept of code designing supported by Galois field mathematics, understanding Jamming environment and interference handling mechanisms. The theoretical principles are tempered with their practical significance to cope up with the interest to both researchers and system designers. Learning is facilitated by streamlined derivations, tutorials, and assignments. (from nptel.ac.in)

Lecture 08 - Hybrid Spread Spectrum System and Time Hopped SSS


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Lecture 01 - Introduction to Spread Spectrum Communication
Lecture 02 - Direct Sequence Spread Spectrum System
Lecture 03 - Performance Analysis of DSSS
Lecture 04 - Concept of Jamming Margin
Lecture 05 - Frequency-hopping Spread Spectrum System
Lecture 06 - Tutorial I
Lecture 07 - Slow and Fast Frequency Hopping
Lecture 08 - Hybrid Spread Spectrum System and Time Hopped SSS
Lecture 09 - Spread Sequences and Waveforms
Lecture 10 - Generation Mechanism of Maximal Sequence
Lecture 11 - Properties of Spread Spectrum Sequences
Lecture 12 - Tutorial II
Lecture 13 - Power Spectral Density of Maximal Sequences
Lecture 14 - Walsh Hadamard Code and Properties
Lecture 15 - Generation Mechanism and Properties of OVSF and Barker Codes
Lecture 16 - Generation Mechanism and Properties of Gold and Kasami Codes
Lecture 17 - Performance Analysis of DSS in Presence of Tone Jamming
Lecture 18 - Performance Analysis during Generation Tone Jamming
Lecture 19 - Performance Analysis in Presence of Gaussian Interference
Lecture 20 - Performance Analysis of a Quaternary System
Lecture 21 - Despreading with Matched Filter
Lecture 22 - Noncoherent Systems
Lecture 23 - Tutorial III
Lecture 24 - Galois Field Mathematics
Lecture 25 - Galois Field Mathematics (cont.)
Lecture 26 - Galois Field Mathematics (cont.)
Lecture 27 - Polynomials over Binary Field
Lecture 28 - Long Nonlinear Sequence Generation
Lecture 29 - Rejection of Narrowband Interference
Lecture 30 - Narrowband Interference Cancellation by Transform-domain Processing
Lecture 31 - PN Code Acquisition Fundamentals
Lecture 32 - Performance Analysis of PN Code Acquisition System
Lecture 33 - Performance Analysis of PN Code Acquisition System (cont.)
Lecture 34 - Tutorial IV
Lecture 35 - Rapid Acquisition using Matched Filter
Lecture 36 - Rapid Acquisition using Matched Filter (cont.)
Lecture 37 - Active Search Acquisition for FFH/MFSK Signals
Lecture 38 - Active Search Code Acquisition for FFH/MFSK Analysis
Lecture 39 - Detection Probability Analysis of Code Acquisition for FFH/MFSK
Lecture 40 - Tutorial V
Lecture 41 - DSSS Tracking
Lecture 42 - FHSS Synchronization Method I
Lecture 43 - FHSS Synchronization Method II
Lecture 44 - FHSS Synchronization Method III
Lecture 45 - FHSS Tracking
Lecture 46 - Tutorial VI
Lecture 47 - Concept of Fading for Wireless Communications
Lecture 48 - Diversity for Fading Channels
Lecture 49 - Rake Receiver
Lecture 50 - Performance Analysis of Rake Receiver
Lecture 51 - Spread Spectrum Multiple Access
Lecture 52 - Tutorial VII
Lecture 53 - Introduction to CDMA (Code Division Multiple Access)
Lecture 54 - Interference Handling Mechanism in CDMA Networks
Lecture 55 - Interference Handling by Soft Handover
Lecture 56 - Interference Handling by Smart Antenna
Lecture 57 - Multiuser Detection and Interference Cancellation
Lecture 58 - Tutorial VIII
Lecture 59 - Multiuser Detection
Lecture 60 - Multiuser Detection (cont.)
Lecture 61 - Multiuser Detection: Probability of Error
Lecture 62 - IS95 and CDMA
Lecture 63 - IS95 and CDMA (cont.)
Lecture 64 - Tutorial IX
Lecture 65 - WCDMA and UMTS
Lecture 66 - WCDMA and UMTS (cont.)
Lecture 67 - LPI Communications
Lecture 68 - Radiometer
Lecture 69 - Interceptor Detector