Question

The modulation scheme followed by Z-wave is:

Answer 1

The modulation scheme followed by Z-wave is: b.QPSK.

QPSK is the abbreviation of Quadrature Phase Shift Keying.

This is a special type of phase shift keying which two bits are modulated at the same time in one of four possible carrier phase shifts, giving it an advantage over normal phase shift keying, because a QPSK signal can carry twice as much information.

Answer 2

GFSK Manchester channel encoding is the modulation scheme followed by Z-wave.

Explanation:

• The Z-wave technology concept uses a low power RF radio circuitry where it is used for embedding home electronics systems and devices.  

• This technology uses the RF interface to enable encode and decode of the functions. Thus it enables to be attained within minimum level of processing and with low power consumption.  

• This RF signal can be transmitted with higher efficiency. The modulation scheme of Z-wave is GFSK Manchester channel encoding.

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