engleski

DIGITAL GATE-ARRAY WALSH FUNCTION BASED SHIFT-KEYING MODULATORS

Walsh function generator is proposed as a base of M-ary shift-keying (ASK, FSK, PSK) modulator design. That digitally based solution, without need for ROM look-up table, is suitable for direct implementation in digital ROM-less gate-array. Models of the different shift-keyed modulators are described. Measurement on PLD modeled 2-ASK, 2-FSK and 8-PSK modulators are presented and discussed.

modulator; shift-keying; Walsh functions; gate-array

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