• Lifecycle cost • Operating cost • Development cost • Manufacturing cost • Revenue • Valuation techniques

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PAUL ALFRED LAGACE Margaret macvicar Faculty Fellow Professor of Aeronautics and Astronautics and Engineering Systems Co-Director, Leaders For Manufacturing and System Design and Management Programs

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Automatic repeat request (ARQ) Break large files into packets FILE PKT PKT PKT Check received packets for errors Use a feedback channel to request retransmissions Retransmit packets containing errors acket Receive ACK

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