From the Electrical and Computer Engineering Department at the University of Colorado:
http://ece-www.colorado.edu/~ecen5797/course_material/Ch1slides.pdf
http://ece-www.colorado.edu/~ecen5797/course_material/Ch2slides.pdf
http://ece-www.colorado.edu/~ecen5797/course_material/Ch3slides.pdf
http://ece-www.colorado.edu/~ecen5797/course_material/Ch4slides.pdf
http://ece-www.colorado.edu/~ecen5797/course_material/Ch5slides.pdf
http://ece-www.colorado.edu/~ecen5797/course_material/Ch6slides.pdf
http://ece-www.colorado.edu/~ecen5797/course_material/Ch7slides.pdf
http://ece-www.colorado.edu/~ecen5797/course_material/Ch8slides.pdf
http://ece-www.colorado.edu/~ecen5797/course_material/Ch9slides.pdf