Standard Orthogonal Arrays Maximum Maximum Number of Colum Orthogonal Number of Number of

Plan for the session Q Questions Complete some random topics Lecture on design of dynamic systems (Signal/Response Systems Recitation on hw#5? 16.881

Term Project Final presentation Isual aids available on-campus Computer projection Document camera

Objectives Review the format and expectations for the final exam Review material needed to succeed on the final exam Set the material from the course in the context of the product realization process Answer questions

Final exam Very good performance overall Essays were particularly good ·Mean-88.5%0 Standard deviation -5.7%

Administrative matters Instructors: Eytan Modiano Meeting times: Tuesdays and Thursdays Text: Communications Systems engineering Proakis and salehi Grading 10% weekly Homework Assignments 30% each of 3 exams Final exam during final exam period

Sampling Sampling provides a discrete-time representation of a continuous waveform Sample points are real-valued numbers In order to transmit over a digital system we must first convert into discrete valued numbers

The signal suffers an attenuation loss l Received power PR= PT/L Received snr=E,/No, Eb=Pr/Rb Antennas are used to compensate for attenuation loss Capture as much of the signal as possible

Source coding Source Encode Channel Alphabet alphabet Source symbols Letters of alphabet, ASClI symbols, English

Sampling Given a continuous time waveform, can we represent it using discrete samples? How often should we sample? Can we reproduce the original waveform?