Be Socialized And Subscribed
Be Socialized And Subscribed
Recive All Latest And Hottest Articles,Tips And Tricks,Awesome Widgets Directly Into Your Inbox And Stay UpDate With Us...!!!

E-Mail Will Be Delivered By FeedBurner.
      cheakout our partner sites Swissen Blog on Security & Technology,  php.swissen.in for Hd PHP Video Tutorial Learning    p.swissen.in for Photoshop Video Tutorial Learning  : admin








Top 5

Coming Soon .......


Recent ones
Coming Soon .......




Follow Us



guest information


IP address:

host address:

browser info:
CCBot/2.0 (http://commoncrawl.org/faq/)






    » It stands for Orthogonal Frequency Division Multiplexing.

    » It is used for data transmission over radio broadcast channel and wireless communication channel.

    » For finite length of channel

        for finite length of channel
    The channel order l is known at the transmitter while h(k) are still unknown.The partial channel information,the particular transmission techniques is known as orthogonal frequency division modulation can be implemented at transmitter where T is symbol duration and sampling period.

    ofdm is frequency response of channel h(kT).



    The peak of each signal concides with through of other signals.



    Basic Idea: Channel bandwidth divided into multiple subchannels to reduce ISI and frequency selective fading.

    Multicarrier Transmission: Subcarriers are orthogonal to each other in frequency domain.

    Time Domain Spreading: Spreading is achieved in time domain by repeating the same information in a OFDM symbol on two different jb bands .

    Frequency Domain Spreading: Spreading is achieve by choosing congugate symmetric input for input to IFFT.



    Theory: The baseband OFDM signal can be written as .

     image 3