Design & Comparison of Lossless Polyphase Decomposition using Filter Bank for Onboard Digital Signal Processing Payload

• Published in: 2018 3rd IEEE International Conference on Recent Trends in Electronics, Information & Communication Technology (RTEICT) pp. 2407 - 2412
• Main Authors: Wadiwala, Krishna K., Padalia, Janki S., Mishra, Neerai, Mishra, Deepak
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-05-2018
• Subjects: DCT; Discrete cosine transforms; Discrete Fourier transforms; Filter banks; Finite impulse response filters; Image reconstruction; MDFT; Phase distortion; Satellites; TMUX
• DOI: 10.1109/RTEICT42901.2018.9012142

The M-channel transmultiplexer's for geo communication satellite are design and simulation in this paper. The mathematical description has been discussed in detail. Modified Discrete Fourier Transform(MDFT) and and cosined Discrete Transform(DCT) have chosen for advanced communication satellite. MDFT and DCT provide perfect reconstruction. The theory of filter bank satisfying the perfect reconstruction using proto FIR filter of length N= 2*M*m+1; where M = No. of channel. A new set of objective functions has been derived to satisfy the transmultiplexer's requirements based on these approaches. This work is done under the technology development program of ISRO. In this paper a comparison of the MDFT and DCT approaches are also described.