Key Terms 4B5B Digital Signal Zero (DS0) ADC & DAC Error Control (detection, correction) Aliasing Forward Error Correction (FEC) Amplitude Shift Keying Frequency Shift Keying Asynchronous timing Hamming distance Automatic Repeat Request (ARQ) Hartley's Law Baud (symbol rate) Isochronous timing Bipolar Alternative Mark Inversion (Bipolar Line coding AMI) Linear Block Code Bipolar with Eight-Zero Substitution (B8ZS) M'ary Modulation Bit-depth Manchester line coding Bit Rate (BER) Non-Return to Zero (NRZ) Bit-time Nyquist Sampling Theorem Shift Keying Code Word Plesiochronous timing Constellation diagram Pulse Code Modulation (PCM) Cyclic Redundancy (CRC) Quadrature Amplitude Modulation (QAM) Data Encoding Quantization & Quantization Noise Data Word Symbol Digital Compression (lossy, lossless) Synchronous timing Chapter 3 Problems: 1. A signal that is shifted to a higher frequency by mixing it with a carrier is termed a _________. a. Baseband b. Passband c. Broadband d. Aggregate Answer: b 2. Logical data (1's and 0's) from a computer are coded into an electrical signal which we call the _________ . a. Baseband b. Passband c. Broadband d. Aggregate Answer: a
Key Terms 4B5B ADC & DAC Aliasing Amplitude Shift Keying Asynchronous timing Automatic Repeat Request (ARQ) Baud (symbol rate) Bipolar Alternative Mark Inversion (Bipolar AMI) Bipolar with Eight-Zero Substitution (B8ZS) Bit-depth Bit Rate (BER) Bit-time Code Word Constellation diagram Cyclic Redundancy (CRC) Data Encoding Data Word Digital Compression (lossy, lossless) Digital Signal Zero (DS0) Error Control (detection, correction) Forward Error Correction (FEC) Frequency Shift Keying Hamming distance Hartley's Law Isochronous timing Line coding Linear Block Code M'ary Modulation Manchester line coding Non-Return to Zero (NRZ) Nyquist Sampling Theorem Shift Keying Plesiochronous timing Pulse Code Modulation (PCM) Quadrature Amplitude Modulation (QAM) Quantization & Quantization Noise Symbol Synchronous timing Chapter 3 Problems: 1. A signal that is shifted to a higher frequency by mixing it with a carrier is termed a _________. a. Baseband b. Passband c. Broadband d. Aggregate Answer: b 2. Logical data (1's and 0's) from a computer are coded into an electrical signal which we call the _________ . a. Baseband b. Passband c. Broadband d. Aggregate Answer: a
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