Using Ofdm Transmitter And Receivers

908 Words4 Pages
Now a day’s communication is an important factor and requirement high data rate for the communication and also require the error free environment. So for these entire requirements we use OFDM. OFDM is used for both wired and wireless communication. OFDM belongs to a broader class of multicarrier modulation (MCM) in which the data information is carried over many lower rate subcarrier [1]. OFDM is a solution of intersymbol interference (ISI). ISI is caused by dispersive channel. As higher data rate requirement for this OFDM is very important and for the subcarrier modulation using the different type of modulation technique such as Quadrature Amplitude Modulation (QAM) or Phase Shift Modulation (PSK) [3]. The Inverse Fast Fourier Transform (IFFT) and the Fast Fourier Transform (FFT) are very effectively use in OFDM transmitter and receiver. These algorithms are very important for the OFDM to prove higher scalability above the channel dispersion and the data rate [5].There are so many restrictions in optical fiber communication like modal dispersion, Chromatic Dispersion (CD), Polarization Mode Dispersion (PMD) [11]. OFDM play important role to eliminate these restriction by using different modulation technique. Coherent optical OFDM (CO-OFDM) is an important technique for high data rate. CO-OFDM eliminates the Chromatic Dispersion (CD) and the Polarization Mode Dispersion (PMD)[8] The main two advantages of OFDM are its robustness against channel dispersion and its ease
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