Data Randomization for Synchronization in OFDM System

Orthogonal Frequency Division Modulation (OFDM) is an efficient multi-carrier modulation scheme. This results in the optimal usage of bandwidth. It is used in many wireless communication systems due to its robustness towards fading channel behavior and a relative ease of implementation coming from computationally efficient Inverse Fast Fourier Transforms (IFFT). OFDM techniques form the basis of the physical layer of many broadband high data rate technologies including Digital Subscriber Lines (xDSL), Wi-Fi (IEEE802.11a/g/n) etc. One major problem with OFDM is synchronization between transmitter and receiver. This paper has been discussing the synchronization issues through data randomization.