Orthogonal frequency division multiplexing ofdm
This presentation is the property of its rightful owner.
Sponsored Links
1 / 9

Orthogonal Frequency Division Multiplexing (OFDM) PowerPoint PPT Presentation


  • 95 Views
  • Uploaded on
  • Presentation posted in: General

Orthogonal Frequency Division Multiplexing (OFDM). Ryan Smith Jay Visaria Yoav Klein Eric Cho. The Basics. QPSK Encoding. -System which encodes two bits per symbol -Each symbol has a real part, and imaginary part. Coordinate System. -Real and Imaginary axes

Download Presentation

Orthogonal Frequency Division Multiplexing (OFDM)

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Orthogonal frequency division multiplexing ofdm

Orthogonal Frequency Division Multiplexing (OFDM)

Ryan Smith

Jay Visaria

Yoav Klein

Eric Cho


The basics

The Basics

  • QPSK Encoding

-System which encodes two bits per symbol

-Each symbol has a real part, and imaginary part

  • Coordinate System

-Real and Imaginary axes

-Each Quadrant assigned a particular symbol


Quadrant break down

Quadrant Break Down


Ofdm system with noise

OFDM system with noise

General model of an OFDM system

Noise is picked up during data transmission

How does OFDM cope with noise?

How much noise can the system handle?


Noise issues

Noise Issues


Channeling

Channeling

  • Increase in Speed

Faster computation of FFT / IFFT due to

parallel multiply accumulates.

  • Decrease in Noise

Smaller noise margin due to smaller amount

of data being transmitted per channel.


Our ofdm system

Our OFDM System


Ofdm applications

OFDM Applications

  • ADSL

  • Wireless networking

  • High Definition Television Broadcasts


The end

The End


  • Login