The paper describes a new architecture for implementation of 8 X 8 FDCT (Fast Discrete Cosine Transform) using Distributed Arithmetic (DA). This proposed architecture combines both DA based approaches for distributed input vector and constant coefficients. The described Combined Distributed Arithmetic based DCT (CDA-DCT) architecture has been implemented on Virtex II FPGA, and shows fewer adders and saving exceeding 97% achieved.

This book describes a modulator-demodulator circuit which can execute different modulation schemes like- AM, ASK, BPSK, FSK & QPSK. Both the LUT based implementation and complete VHDL based implementations have done by using digital high frequency carriers. In the first step to realize the whole modulation and demodulation schemes using MATLAB Simulink. The format of a VHDL program is built around the concept of BLOCKS which are the basic building units of a VHDL design.