Bandwidth utilization

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credit by: Rifka Hayati a.k.a khalaftblack

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Bandwidth utilization

  1. 1. Bandwidth Utilization:Multiplexing and Spreading• Shamimi• Aida• Shira• Rifka Hayati Bandwidth Utilization: Multiplexing and Spreading 1
  2. 2. Definition Bandwidth Utilization: “The wise use of available bandwidth to achieve specific goals. ” Multiplexing achieve “effeciency” Spreading achieve “privacy and anti-jamming” Bandwidth Utilization: Multiplexing and Spreading 2
  3. 3. Bandwidth Utilization:1 Multiplexing2 Spreading Bandwidth Utilization: Multiplexing and Spreading 3
  4. 4. Definition Multiplexing: “Multiplexing is the set of techniques that allows the simultaneous transmission of multiple signals across a single data link.” Bandwidth Utilization: Multiplexing and Spreading 4
  5. 5. A dividing a link into channels Bandwidth Utilization: Multiplexing and Spreading 5
  6. 6. Type of multiplexing Analog Multiplexing Technique Digital Multiplexing Technique Frequency-Division Wavelength-Division Time-Division Multiplexing Multiplexing Multiplexing“A analog multiplexing “A analog multiplexing “A digital multiplexing technique to combine technique to combine technique to combine analog signals” optical signals” several low-rate channels into one hight rate one” Synchronous Asynchronous/ Statictical Bandwidth Utilization: Multiplexing and Spreading 6
  7. 7. Frequency-Division Multiplexing“A analog multiplexing technique to combine analog signals” This picture is a conceptual illustration of the multiplexing process. Each source generates a signal of a similar frequency range. Inside the multiplexer, these similar signals modulates different carrier frequencies (f1, f2, and f3). The resulting modulated signals are then combined into a single composite signal that is sent out over a media link that has enough bandwidth to accommodate it. Bandwidth Utilization: Multiplexing and Spreading 7
  8. 8. Frequency-Division Multiplexing“A analog multiplexing technique to combine analog signals” The demultiplexer uses a series of filters to decompose the multiplexed signal into its constituent component signals. The individual signals are then passed to a demodulator that separates them from their carriers and passes them to the output lines. This picture is a conceptual illustration of demultiplexing process. Bandwidth Utilization: Multiplexing and Spreading 8
  9. 9. Wavelength-Division Multiplexing Bandwidth Utilization: Multiplexing and Spreading 9
  10. 10. Wavelength-Division Multiplexing Bandwidth Utilization: Multiplexing and Spreading 10

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