https://learner.coursera.help/hc/requests/new
http://www.dessci.com/en/products/mathplayer/
https://learner.coursera.help/
https://www.coursera.org/
https://www.coursera.org/courses
https://www.coursera.org//about/
https://www.coursera.org//about/careers
https://www.coursera.org//about/people
https://www.coursera.org//about/contact
https://www.coursera.org/
https://www.coursera.org/account/profile
https://www.coursera.org/account/accomplishments
https://www.coursera.org/account/settings
https://class.coursera.org/dsp-006/class/preferences
https://www.coursera.org/epfl
https://class.coursera.org/dsp-006/
https://class.coursera.org/dsp-006
https://class.coursera.org/dsp-006/questions
https://class.coursera.org/dsp-006/wiki/StartHere
https://class.coursera.org/dsp-006/wiki/syllabus
https://class.coursera.org/dsp-006/wiki/aboutus
https://class.coursera.org/dsp-006/wiki/week1
https://class.coursera.org/dsp-006/wiki/week2
https://class.coursera.org/dsp-006/wiki/week3
https://class.coursera.org/dsp-006/wiki/week4
https://class.coursera.org/dsp-006/wiki/week5
https://class.coursera.org/dsp-006/wiki/week6
https://class.coursera.org/dsp-006/wiki/week7
https://class.coursera.org/dsp-006/wiki/week8
https://class.coursera.org/dsp-006/wiki/week9
https://class.coursera.org/dsp-006/wiki/week10
https://class.coursera.org/dsp-006/wiki/forumshowto
https://class.coursera.org/dsp-006/forum/index
https://class.coursera.org/dsp-006/lecture/index
https://class.coursera.org/dsp-006/quiz/index
https://class.coursera.org/dsp-006/wiki/SOTD
https://class.coursera.org/dsp-006/wiki/numex2
https://class.coursera.org/dsp-006/assignment
https://class.coursera.org/dsp-006/wiki/addmat
https://accounts.coursera.org/i/zendesk/courserahelp?return_to=https://learner.coursera.help/hc/
https://accounts.coursera.org/i/zendesk/courserahelp?return_to=https://learner.coursera.help/hc/
https://class.coursera.org/mooc/help/pages/setup
https://class.coursera.org/dsp-006/lecture/139
https://class.coursera.org/dsp-006/lecture/141
https://class.coursera.org/dsp-006/lecture/143
https://d396qusza40orc.cloudfront.net/dsp/slides/errata%20oct%202015/module9-0_v2.pdf
https://class.coursera.org/dsp-006/lecture/189
https://class.coursera.org/dsp-006/wiki/Numex9Python
https://github.com/LCAV/DSPNumex
https://class.coursera.org/dsp-006/quiz/start?quiz_id=258
https://d396qusza40orc.cloudfront.net/dsp/solved_hw_assets/solvedHW16_300614.pdf
https://class.coursera.org/dsp-006/quiz/start?quiz_id=208
https://class.coursera.org/dsp-006/quiz/start?quiz_id=298
https://class.coursera.org/dsp-006/lecture/169
https://class.coursera.org/dsp-006/lecture/147
https://class.coursera.org/dsp-006/lecture/149
https://class.coursera.org/dsp-006/quiz/start?quiz_id=210
https://class.coursera.org/dsp-006/quiz/start?quiz_id=300
http://www.amazon.com/Digital-Communication-John-R-Barry/dp/0792375483
http://www.amazon.com/Digital-Communications-Edition-John-Proakis/dp/0072957166/ref=pd_sim_b_3
http://www.itu.int/rec/T-REC-G.992.1-199907-I/en
http://www.itu.int/rec/T-REC-V.34/en