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Performance Analysis of Carrier Frequency Offset (CFO) and Phase Noise in 4G Communication System

Mubinul Haque, Md. Abu Bakar Siddiqui


For telecommunication services the dramatic shift in the market has been made in beginning of 21st century. In these days' communication network the key challenges is to integrate numerous serves, convey the additional data as expeditiously as doable through limited bandwidth and providing high information data rates. For 4G communication systems 3GPP introduced two features Higher Order Modulation and Multiple Input Multiple Output (MIMO) in OFDM system but one limiting issue in implementing high-speed wireless systems is the impairment associated with analog processing due to component imperfections. For OFDM system is sensitive to frequency errors, causing inter carrier interference (ICI) among subcarriers and phase noise, for that reason The degradation of the bit error rate (BER), caused by the presence of carrier frequency offset and carrier phase noise. In this thesis paper the analysis will include the effect of imperfect timing recovery at the output of the receiver and inverse interference matrix cancellation algorithm proposed for improvement of carrier frequency offset (CFO) in poor system. Performance results will be evaluated numerically. Performance degradation due to imperfect timing synchronization will be determined. Performance graphs are plotted in terms of BER (Bit Error Rate) against different values of SNR (Signal to Noise Ratio).


4G, carrier frequency offset, phase noise, MIMO-OFDM

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