Synchronized OFDM System Using Inter-Symbol Pilots

AbstractOFDM is a multicarrier modulation technique which has many advantages like spectral efficiency, robust to multipath fading effect etc. But it is very sensitive to Synchronization Error which increases the error rate and degrades the system performance. The cause for this error is Carrier Frequency Offset (CFO) and Sampling Clock Offset (SCO) which reduces the orthogonality and leads to Inter-Symbol Interference and Inter-Carrier Interference. For increasing the performance of the OFDM system Inter-Symbol Pilot aided synchronization method is introduced in this paper, this method is used to estimate both these offset. These estimated offsets are compensated using interpolation and Inverse Carrier Frequency Techniques