ENPNewswire-July 26, 2019--Keysight, Qualcomm Collaborate to Obtain Industry-First GCF Validation of 5G Radio Frequency (RF) Demodulation
and Radio Resource Management (RRM) Test Cases
The testbed leverages Keysight's metrology-grade signal source and signal analyzers, as well as Keysight's industry-proven software tools Signal Studio (a signal creation tool) and 89600 VSA (a demodulation
and vector signal analysis tool) to confidently validate that their new 5G mmWave RFFE solutions comply to the latest 3GPP Release 15 standards.
The testbed leverages Keysight's metrology-grade signal source and signal analyzers, as well as Keysight's industry-proven software tools -- Signal Studio (a signal creation tool) and 89600 VSA (a demodulation
and vector signal analysis tool) -- to confidently validate that their new 5G mmWave RFFE solutions comply to the latest 3GPP Release 15 standards.
From oscillators to modulation and demodulation
, and from mixers to RF and power amplifier circuits, all are presented in a sequential manner.
Secondly, symbols flows from the source node S are detected at the relay nodes [R.sub.m] with maximum likelihood (ML) demodulation
The receiver part contain a dual polarization coherent detection where the optical signal is detected and converted into an electrical signal, an OFDM demodulation
dual polarization is used to demodulate the waveform using the inverse transform of that used in the transmitter, a QAM decoder which is used to change the samples into bits.
The previous wavelength-based demodulation
fiber sensing systems are complicated, expensive, bulky, and time-consuming, which are not suitable for the outdoor real-time monitoring.
Then, we extract gear fault features around the resonance frequency via sideband analysis in Fourier spectrum, and amplitude and frequency demodulation
To improve the performance of iterative demodulation
and decoding for SCDT, a novel joint sparse graph (JSG) with SCDT and LDPC codes is constructed.
Instead, a receiving AM radio signal containing HV noise is resolved into the in-phase component and the quadrature component of a carrier by quadrature demodulation
. As a result, the radio signal and the HV noise appear in the in-phase component, and only the noise appears in the quadrature component.
Recently, many phase recovering methods have been developed as combination of genetic algorithms and parametric methods [2-4], soft computing techniques applied to Zernike polynomials , combination of genetic algorithms and frequency guided sequential demodulation
, particle swarm optimization , unwrapping of phase maps with sign changes , two-dimensional regularized phase-tracking technique , and so forth.