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Introduction to Computer Networking, Stanford University https://lagunita.stanford.edu/courses/Engineering/Networking-SP/SelfPaced/about Introduction to Computer Networking An introductory computer networking course focusing on how the Internet works and the principles of designing networks and network protocols. lagunita.stanford.edu Unit 7: Lower Layers 중 CSMA/CD and Ethernet 파트 수업 필기 정리 0. In..

Introduction to Computer Networking, Stanford University https://lagunita.stanford.edu/courses/Engineering/Networking-SP/SelfPaced/about Unit 7: Lower Layers 중 FEC and Reed-Solomon 파트 수업 필기 정리 FEC Forward Error Correction SNR / BER Curves when given a modulation scheme and SNR, you can compute expected BER(Bit Error Rate) BER can become low but never reaches zero! directly turning Link Layer Bit..

Introduction to Computer Networking, Stanford University https://lagunita.stanford.edu/courses/Engineering/Networking-SP/SelfPaced/about Unit 7: Lower Layers 중 Clocks and Clock Recovery 파트 수업 필기 정리 Clocks data is transmitted using a 'clock' the receiver needs to know when to sample the arriving data when the clocks are running at different speed how different are these clocks? units of parts per..

Introduction to Computer Networking, Stanford University https://lagunita.stanford.edu/courses/Engineering/Networking-SP/SelfPaced/about Unit 7: Lower Layers 중 Bit Errors 파트 수업 필기 정리 (recall) Shannon Limit the capacity of a communication channel Bandwidth * log₂(1 + S/N) Bandwidth typically fixed SNR: Possible data rate bounded by the Signal to Noise Ratio Stronger signal or lower noise → transm..

Introduction to Computer Networking, Stanford University https://lagunita.stanford.edu/courses/Engineering/Networking-SP/SelfPaced/about Unit 7: Lower Layers 중 Shannon Capacity and Modulation 파트 수업 필기 정리 Physical Layer Capacity bits per second that a given physical layer can support Modulation representation of the capacity on the medium(like channel) Symbols vs. Bits Symbol: the unit of transfe..