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LTE Mobile Communication Systems: Channel Estimation for Uplink,Used
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Fast mobile broadband is becoming a reality. It is estimated that almost 3.4 billion people will have broadband by 2014 (about 80 percent will be mobile broadband subscribers). LTE is one of the lastest technology for delevering services to those huge amount of subscribers. This project focuses on the channel estimation for uplink of the UMTS LTE where single carrierfrequency division multiple access (SCFDMA) technique is utilized as multiple access air interfaces. Based on working assumptions of 3GPP, this project estimates and predicts timevarying nature (Doppler effects) of the channel for the UMTS LTE (uplink) by different lowcomplexity methods. The channel estimation is done in both the temporalandfrequencydomain. The estimation of channel in frequencydomain is based on Interpolation method, Least Square (LS) method and Wiener filtering or Linear Minimum Mean Square Error (LMMSE) method. The estimation of channel in temporaldomain is done using linear Interpolation. The performance of all these schemes are compared by measuring biterrorrate (BER) for different signaltonoise ratio (SNR) with QAM16 modulation on Rayleigh fading channel based on Jakes model.
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