Discrete Orthogonal Multi-transform on Chip (DOMoC)

The modern real time applications such as orthogonal frequency division multiplexing, data/image/video compression, speech processing, and etc., demand high performance discrete orthogonal transform designs with lesser area/power and delay. This paper proposes two kinds of architectures to perform multiple N -point 1D-discrete orthogonal transforms on single chip. They are FFT parallel architecture based and matrix-vector multiplier based. The proposed architectures have the feasibility to perform N or N 2 or N 4 or N 8 -point discrete forward/reverse orthogonal transforms, where FFT, discrete Cosine, Sine, Haar, Hartley, Slant, and Walsh-Hadamard transforms are considered. The novelty with proposed architectures is the provision of multiple transforms using the single hardware. The frequency of the proposed 16-point FFT parallel architecture based and matrix-vector multiplier based 1D-discrete orthogonal transform architectures are 110.9 MHz and 26.65 MHz using 45 nm technology respectively.