A generalized architecture for the one-dimensional discrete cosine and sine transforms

In this paper, we propose a generalized architecture for the I-D discrete cosine transform (DCT). discrete sine transform (DST), and their inverses based on a general formulation. This architecture provides the flexibility to adaptively select different transform functions through a simple control signal, As compared with other unified architectures for the DCT/DST, the proposed architecture possesses better performance in the hardware cost and the number of I/O channels, The proposed design can be efficiently realized by using the distributed arithmetic approach in the VLSI implementation.