Performance Analysis of JPEG2000 Images Using UPA Algorithm & OFDM through Different Channel Models

In this thesis, we first build up a wireless communication simulator including Gray coding, modulation, different channel models (AWGN, flat fading and frequency selective fading channels), channel estimation, adaptive equalization, and demodulation. Next, we test the effect of different channel models to the data and image in receiver with constellation and BER (bit error rate) plots under QPSK modulation. The transmission of JPEG2000 images using an Unequal Power Allocation (UPA) scheme and Orthogonal Frequency Division Multiplexing (OFDM) technique over different channel models is presented. For Image data source, we also compare the received image quality to original image in different channels. Moreover, the actual total power consumed for transmission is measured and compared with the total power initially assigned. Simulation results show an improvement of up to 10.5 dB in the decoded image quality when the UPA scheme is used. In addition, the simulation results demonstrate the effectiveness of the proposed UPA algorithm in frequency selective block fading channels.