In the proposed scheme, the received signal is demodulated using binary phase shift keying
* Differential quadrature phase shift keying
(DQPSK) is the four-level version of DPSK, in which each symbol transmitted has two encoded bits (00, 01, 11 and 10).
This paper deals with a modeling of the phase shift keying
(PSK) modulation technique and its multi-level variations, which appears to be very resistant to nonlinear effects present in the optical transmission medium [4, 5].
(2) Dual Polarization Quadrature Phase Shift Keying
(DP-QPSK) modulation system: This is a modulation method in which four different two-bit signal data are assigned to four modulated optical phases, 0 degrees, 90 degrees, 180 degrees and 270 degrees, for individual orthogonal polarized waves.
The results of simulation of modified synchronous phase detector showed the possibility of an increase of noise immunity of receiving signals with phase shift keying
and the ability of the modified detector to detect OQPSK and 8PSK signals even when signal strength is less than the capacity of obstacles.
Performance of coherent phase shift keying
(PSK) signal receiver strongly depends on the quality of the reference carrier extraction.
The initial release supports the analysis of broadcast FM signals as well as phase shift keying
(PSK) modulation types including binary phase shift keying
(BPSK), quadrature phase-shift-keying (QPSK), and offset-quadrature phase-shift-keying (OQPSK) for example as used by ZigBee devices.
Aeroflex Incorporated, a wholly owned subsidiary of Aeroflex Holding Corp (NYSE:ARX), said on Wednesday that it has successfully demonstrated the decoding and encoding of the Project 25 TDMA H-DQPSK (Harmonized Differential Quadrature Phase Shift Keying
) radio signal using the 3900 Series Digital Radio Test Set.
Differential phase shift keying
(DPSK) compares the phase of the present pulse with that of the previous one.
Customers can leverage the solutionEoACAOs advanced signal processing technologies, which use Dual Polarization Quadrature Phase Shift Keying
(DP QPSK) modulation, coherent detection and electronic dispersion compensation to transmit four times as much information across existing 10G networks.
This technology is applicable to a variety of products, which include biphase shift keying, quadrature phase shift keying
and vector modulators, and phase shifters.