Title :
Walsh-Hadamard transform for complex-valued signals
Author :
Arambepola, B. ; Partington, Kim C
Author_Institution :
GEC-Marconi Res. Center, Chelmsford, UK
Abstract :
The basis functions of the Walsh-Hadamard transform are real-valued whereas most signals in digital signal processing have in-phase and quadrature components. A Walsh-Hadamard power spectrum of a complex-valued sequence is defined, with the aim of obtaining a Fourier-like power spectrum using fewer computations. The new transform is illustrated with reference to satellite radar altimetry.
Keywords :
Walsh functions; computerised signal processing; height measurement; information theory; radar theory; transforms; Fourier-like power spectrum; WHT complex version; Walsh-Hadamard power spectrum; Walsh-Hadamard transform; complex WHT; complex-valued sequence; complex-valued signals; digital signal processing; hardware saving; satellite radar altimetry;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19920160
