DP-QPSK refers to Dual polarization-quadrature phase shift keying.
2.
It transmits using 1200 bit / s binary phase shift keying ( BPSK ), a very robust binary modulation scheme.
3.
As delivered, the physical layer is OFDM, sampled at 250 kHz, with 512 differential phase shift keying channels from 42 89 kHz.
4.
BPSK ( also sometimes called PRK, phase reversal keying, or 2PSK ) is the simplest form of phase shift keying ( PSK ).
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Finally, the IEEE 802.15.4a PHY standard actually mixes CSS encoding techniques with differential phase shift keying modulation ( DPSK ) to achieve better data rates.
6.
Differential phase shift keying ( DPSK ) is a common form of phase modulation that conveys data by changing the phase of the carrier wave.
7.
Examples of these are " quadrature phase shift keying " ( QPSK ) and its generalisation as m-ary " quadrature amplitude modulation " ( m-QAM ).
8.
The C / A code is transmitted on the L1 frequency as a 1.023 MHz signal using a bi-phase shift keying ( BPSK ) modulation technique.
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As a form of phase shift keying is used to transmit data during each burst, it would seem reasonable to expect the transmit power to be constant.
10.
Since the introduction of Bluetooth 2.0 + EDR, ? / 4-DQPSK ( Differential Quadrature Phase Shift Keying ) and 8DPSK modulation may also be used between compatible devices.
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