CS698T Wireless Networks: Principles and Practice Topic 07 - - PowerPoint PPT Presentation

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CS698T Wireless Networks: Principles and Practice Topic 07 - - PowerPoint PPT Presentation

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CS698T Wireless Networks: Principles and Practice Topic 07 Multiplexing Techniques Bhaskaran Raman, Department of CSE, IIT Kanpur http://www.cse.iitk.ac.in/users/braman/courses/wless-spring2007/ Jan-Apr 2007 CS698T: Wireless Networks:

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Jan-Apr 2007 CS698T: “Wireless Networks: Principles & Practice”, Bhaskaran Raman, Dept. of CSE, IIT Kanpur Topic 07

CS698T Wireless Networks: Principles and Practice

Topic 07 Multiplexing Techniques Bhaskaran Raman, Department of CSE, IIT Kanpur

http://www.cse.iitk.ac.in/users/braman/courses/wless-spring2007/

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Jan-Apr 2007 CS698T: “Wireless Networks: Principles & Practice”, Bhaskaran Raman, Dept. of CSE, IIT Kanpur Topic 07

Multiplexing Techniques

  • Wireless channel is shared

– May need to multiplex multiple users

  • Four possibilities:

– Space Division Multiplexing (SDM) – Time Division Multiplexing (TDM) – Frequency Division Multiplexing (FDM) – Code Division Multiplexing (CDM)

  • Advanced, not necessary to know how it works for

this course

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Jan-Apr 2007 CS698T: “Wireless Networks: Principles & Practice”, Bhaskaran Raman, Dept. of CSE, IIT Kanpur Topic 07

Space Division Multiplexing

Source: Mobile Communications, Jochen Schiller

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Jan-Apr 2007 CS698T: “Wireless Networks: Principles & Practice”, Bhaskaran Raman, Dept. of CSE, IIT Kanpur Topic 07

Time Division Multiplexing

  • Example: satellite links

Source: Mobile Communications, Jochen Schiller

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Jan-Apr 2007 CS698T: “Wireless Networks: Principles & Practice”, Bhaskaran Raman, Dept. of CSE, IIT Kanpur Topic 07

Frequency Division Multiplexing

Source: Mobile Communications, Jochen Schiller

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Jan-Apr 2007 CS698T: “Wireless Networks: Principles & Practice”, Bhaskaran Raman, Dept. of CSE, IIT Kanpur Topic 07

TDM + FDM

Source: Mobile Communications, Jochen Schiller

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Jan-Apr 2007 CS698T: “Wireless Networks: Principles & Practice”, Bhaskaran Raman, Dept. of CSE, IIT Kanpur Topic 07

  • Akin to people

at a party using different “languages”

  • Advanced

technique, further details not necessary for this course

Code Division Multiplexing

Source: Mobile Communications, Jochen Schiller