Integrated Circuits for Communications 
[Berkeley Fall '05 Streaming] Topics included: Intro to Communication Circuits; High-Speed Amplifiers and tuned Amplifiers; Two-Port Power Gain and Stability; Matching Networks; Distortion; Noise in Communication Systems; LNA Design; Mixers: BJT/MOS Mixers, Noise and Passive Mixers; LC oscillators, Steady State Analysis, Oscillator Phase Noise; Power Amplifiers; Frequency Synthesizers etc….
Electromagnetics and Applications [MIT Fall '05 Streaming and Downloadable] It presents a great deal of information right from the basics of Electromagnetics such as Maxwell’s equations to its applications in new generation technologies such as wireless communications, computer peripherals to microwave communications, radar, and antennas.
Principles of Digital Communications [MIT Spring '05 Streaming and Downloadable] This course discuses about sampling theorem, AWGN channels, and focuses mainly on the coding techniques linear block codes,Reed-Muller codes, finite fields, Reed-Solomon and BCH codes, binary linear convolutional codes, and the Viterbi algorithm. The advanced coding techniques also included which are trellis codes; codes on graphs; the sum-product and min-sum algorithms; the BCJR algorithm; turbo codes, LDPC codes and RA codes and many more.
Communication System Design II [Portland State University '04 Streaming]
Digital Signal Processing [Berkeley Fall '06 Streaming] This course explores all about digital signals. Foussed mainly on Transforms such as DFS,DFT,FFT, Z-transform, various convolution techniques , realization and implementation of FIR and IIR filters and many more
Digital Siganl Processing [Vietnam Education Foundation Summer Seminar'06 Streaming] Fundamentals of Signal Processing: Sampling and Frequency analysis, Digital Filtering, Statistical and Adaptive Signal Processing; Comprehensive Sensing; Wavelets and Filter Banks: Sampling rate Change Operations, Modulation and Polyphase Representations/ Orthogonal Wavelets Bases and Maxflat Filters, Multi-resolution Analysis (MRA)/Refinement Equation; Multimedia: Image Coding and JPEG, Video coding and Networking issues
Digital Image Processing 
[Berkeley Fall '06 Streaming and Audio Downloadable] Fall 06 Direct Download Fall 2003 Direct Download This course is all about images. Image compression, coding and restoration is the main area focused. The transforms DCT, DFT, Filter design and compression techniques JPEG also discussed in detail.
Digital Image Processing I [Purdue University Spring '05 Streaming] Topics Covered: Sampling, scanning; CSFT and CTFT; MRI and Discrete Transforms; Tomography; 2-D FIR and IIR Filtering; Segmentation and clustering; Color Transforms; Decimation, Interpolation, Image Restoration and Nonlinear Filters; Various Coding Techniques.
Structure and Interpretation of Systems and Signals [Berkeley Fall '06 Streaming] Topics Covered: Signals and Systems, Determinism, Composition, Linearity, Responses and Hybrid Systems. Frequency Domain, Response and Filtering etc....
Wireless,Wi-Fi,Voip and Many more [Science Dissemination Unit 2006, Streaming] Topics included: Use of Unlicensed Spectrum; Wi-Fi Networking Architecture; Wi-Fi Security; IP Networking, DHCP and NAT; Network Monitoring and Management in Linux; Antenna Theory; DIY Wi-Fi Antennas; Software for Antenna Design; Radio propagationBasics; Link Budget Calculation; VoIP; Mesh Networks and many other topics included.
Interviews & Discussions on GSM, GPRS, EDGE, CDMA, Wi-Fi
[3gamericas.org 2001 to '03, Streaming]
These are Lectures not courses and many, you need to search. 
