-
would be +90° for a "1" and −90° for a "0". In differentially-encoded QPSK (
DQPSK), the phase-shifts are 0°, 90°, 180°, −90°
corresponding to data "00", "01"...
-
Retrieved 2017-02-08. Alfiad, M. S.; et al. (2008). "111 Gb/s POLMUX-RZ-
DQPSK Transmission over 1140 km of SSMF with 10.7 Gb/s NRZ-OOK Neighbours" (PDF)...
-
differential quaternary phase shift keying (
DQPSK),
otherwise known as
differential 7t/4 4-PSK or π/4
DQPSK. This
technique allows a bit rate of 48.6 kbit/s...
- data rate
Media access control Security US &
Canada 900 MHz 1 915 MHz DSSS/
DQPSK 250 mW 2 Mbit/s CSMA/CA 16-bit
network ID and
optional DES
encryption Worldwide...
- 5 mm
depending on the type of
interferometer used.
DQPSK is the four-level
version of DPSK.
DQPSK transmits two bits for
every symbol (bit combinations...
-
modulation scheme available.
Since the
introduction of
Bluetooth 2.0+EDR, π/4-
DQPSK (differential
quadrature phase-shift keying) and 8-DPSK
modulation may also...
-
medium lane. 30.14475
Gbaud with DP-
DQPSK and SD-FEC on 1 lane per
direction Mirroring OTN4 developments, DP-
DQPSK (dual
polarization differential quadrature...
-
unknown 1–100 m
depending on
output Modulation MB-OFDM MB-OFDM DSSS, DBPSK,
DQPSK, CCK, OFDM OFDM GFSK
Standardization September 2010 June 2010 September...
-
symbols 16PSK,
using M=16
symbols Differential PSK (DPSK)
Differential QPSK (
DQPSK)
Offset QPSK (OQPSK) π/4–QPSK Frequency-shift
keying (FSK)
Audio frequency-shift...
- {\left({\frac {T}{t_{1}}}\right)}}} dB QPSK 1 1 1.761 dB 8PSK 3.3 dB π⁄4-
DQPSK 3.0 dB
OQPSK 3.3 dB 8VSB 6.5–8.1 dB 64QAM 3 7 {\displaystyle {\sqrt {\frac...
