engleski

M-ary ASK, FSK and PSK Modulators For Programmable Logic Device

The Walsh function sine-wave generator is proposed as a basis of the M-ary shift-keying (ASK, FSK, PSK) modulator design. This digitally based solution is suitable for direct implementation in digital ROM-less structures such as programmable logic devices. The design principle of each M-ary shift-keyed modulator is discussed. Waveforms of the PLD model 2-ASK, 2-FSK and 8-PSK signals are presented.

modulators; shift-keying modulators; Walsh functions; programmable logic device (PLD)

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