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Publicada porElvira De Pena Modificado hace 9 años
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1 8 de febrero del 2001
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2 Chapter 5 Encoding
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3 Figure 5-1 Different Conversion Schemes
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4 Figure 5-2 Digital to Digital Encoding
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5 Figure 5-3 Types of Digital to Digital Encoding
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6 Figure 5-4 Unipolar Encoding
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7 Figure 5-5 Types of Polar Encoding
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8 NRZL Especificación del Protocolo:
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9 Figure 5-6 NRZ-L and NRZ-I Encoding
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10 Figure 5-7 RZ Encoding
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11 Bifase (Auto-Sincronizados) Siempre hay una transición a mitad del intervalo de duración del bit. Técnicas Manchester: La transición de mitad del intervalo sirve para sincronización y transmisión de datos. Manchester Diferencial: La transición de mitad del intervalo solo sirve para sincronización
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12 Manchester Especificación del Protocolo:
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13 Figure 5-8 Manchester and Diff. Manchester Encoding
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14 1. ¿Cuál es la capacidad de un canal de 5kHz que utiliza codificación Manchester? 2. ¿Y si utilizara codificación MLT-3?
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15 Figure 5-9 Types of Bipolar Encoding
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16 Binario Multinivel Técnicas biploar-AMI (“Alternate Mark Inversion”) pseudoternario MLT-3 (Multi-Level Transmit - 3 Levels) 2B1Q
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17 Bipolar-AMI Especificación del Protocolo:
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18 Figure 5-10 Bipolar AMI Encoding
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19 Figure 5-11 B8ZS Encoding
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20 Figure 5-12 HDB3 Encoding
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21 Figure 5-13 Solution to Example 5.1
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22 Figure 5-14 Solution to Example 5.2
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23 Figure 5-15 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 Analog to Digital Encoding
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24 Figure 5-16 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 PAM
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25 Figure 5-17 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 Quantized PAM Signal
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26 Figure 5-18 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 Quantizing Using Sign and Magnitude
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27 Figure 5-19 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 PCM
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28 Figure 5-20 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 From Analog to PCM
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29 Figure 5-20-continued WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 From Analog to PCM
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30 Figure 5-20-continued WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 From Analog to PCM
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31 Figure 5-20-continued WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 From Analog to PCM S k S k ~ S (t) ~ S(t)
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32 Figure 5-21 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 Nyquist Theorem
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33 Figure 5-22 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 Digital to Analog Encoding
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34 Figure 5-23 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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35 ASK Especificación del Protocolo:
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36 Figure 5-24 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 ASK
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37 Figure 5-25 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 Bandwidth for ASK
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38 FSK Especificación del Protocolo:
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39 FSK Figure 5-27 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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40 Bandwidth for FSK Figure 5-28 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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41 PSK Especificación del Protocolo:
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42 PSK Figure 5-29 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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43 PSK Constellation Figure 5-30 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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44 4-PSK Figure 5-31 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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45 4-PSK Characteristics Figure 5-32 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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46 8-PSK Characteristics Figure 5-33 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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47 PSK Bandwidth Figure 5-34 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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48 QAM (4) Especificación del Protocolo
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49 QAM(Quadratura Amplitude Modulation) Re 00 01 10 11 01 00 01 10 11 00 0110
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50 4-QAM and 8-QAM Constellations Figure 5-35 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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51 QAM (8) Especificación del protocolo
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52 Re 000 001 010 011 100 101 110 111 000 001 010 011 011011000110 100 101 110 111
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53 8-QAM Signal Figure 5-36 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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54 16-QAM Constellation Figure 5-37 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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55 Bit Rate and Baud Rate Figure 5-38 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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56 Figure 5-38-continued WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 Bit Rate and Baud Rate
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57 Datos Digitales-Señales Análogas Aplicación en Redes Públicas de Datos Aplicación en Redes de Área Local
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58 Problema 1. ¿Cuál es el periodo de muestreo que necesita una señal análoga que tiene un ancho de banda de 20 Khz?
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59 Problema 2. ¿Cuál es la razón de señal de ruido, si se utilizan 8 niveles para discretizar linealmente la amplitud de la señal?
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60 Problema 3. ¿Cuál es la razón de datos de una señal discretizada a 8 niveles (3 bits) con un periodo de muetreo de 0.1 mseg.?
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61 Figure 5-39 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 Analog to Analog Modulation
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62 Figure 5-40 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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63 Figure 5-41 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 Amplitude Modulation
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64 Figure 5-42 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 AM Bandwidth
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65 Figure 5-43 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 AM Band Allocation
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66 Figure 5-44 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 Frequency Modulation
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67 Figure 5-45 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 FM Bandwidth
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68 Figure 5-46 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 FM Band Allocation
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69 Cap. 6
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70 Figure 6-19 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 Modem
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71 Bandwidth for Telephone Line Figure 6-20 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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72 Baud Rate for Half-Duplex ASK Figure 6-21 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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73 Baud Rate for Full-Duplex ASK Figure 6-22 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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74 Baud Rate for Half-Duplex FSK Figure 6-23 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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75 Baud Rate for Full-Duplex FSK Figure 6-24 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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76 Bell Modems Figure 6-25 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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77 Bell Modems Figure 6-25-continued WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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78 ITU Modems Figure 6-26-continued WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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79 V.22bis 16-QAM Constellation Figure 6-27 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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80 V.32 Constellation Figure 6-28 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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81 V.33 Constellation Figure 6-29 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
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