BER SENSITIVITY OF OFDM

BER SENSITIVITY OF OFDM

A COMPARATIVE STUDY

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This paper discusses the effect of frequency offset on the performance of OFDM communications systems. The most important requirement in an OFDM is frequency and time synchronization as this form the reason for orthogonality between the subcarriers. However OFDM is susceptible to synchronization errors between transmitter and receiver local oscillator frequencies. This error is known as the carrier frequency offset (CFO) [1] and causes ICI and it also destroys the orthogonality between the subcarriers that's why performance of OFDM systems is degraded by the Carrier Frequency Offset (CFO) . In...