SC-FDE for offset modulations: an efficient transmission technique for broadband wireless systems
It is widely accepted that SC-FDE (Single-Carrier with Frequency-Domain Equalization) is
an excellent candidate for broadband wireless systems, especially when an efficient power …
an excellent candidate for broadband wireless systems, especially when an efficient power …
On the use of multiple grossly nonlinear amplifiers for highly efficient linear amplification of multilevel constellations
V Astucia, P Montezuma, R Dinis… - 2013 IEEE 78th …, 2013 - ieeexplore.ieee.org
Multilevel modulations can ensure high spectral efficiency but at cost of energy efficiency
and envelope fluctuations that can compromise the amplification efficiency at the transmitter …
and envelope fluctuations that can compromise the amplification efficiency at the transmitter …
Implementing physical layer security using transmitters with constellation shaping
P Montezuma, R Dinis - 2015 24th International Conference on …, 2015 - ieeexplore.ieee.org
In wireless communication systems privacy among users contents is a crucial security
requirement such as power and spectral efficiency. Spectral and power efficiencies are …
requirement such as power and spectral efficiency. Spectral and power efficiencies are …
Pragmatic frequency domain equalization for single carrier with offset modulations
Offset signals can be designed to have reduced envelope fluctuations allowing high
amplification efficiency. When combined with SC-FDE (Single-Carrier with Frequency …
amplification efficiency. When combined with SC-FDE (Single-Carrier with Frequency …
Combining info and spatial directivities in multiple antenna transmission systems
A Ferreira, G Gaspar, P Montezuma… - … Engineers Forum (YEF …, 2017 - ieeexplore.ieee.org
It is well known that Massive MIMO systems (Multiple-input multiple-output) have high
potential for future wireless broadband systems. However, high spectral and power …
potential for future wireless broadband systems. However, high spectral and power …
Energy efficient massive MIMO point-to-point communications with physical layer security: BPSK vs QPSK decomposition
Massive multiple-input multiple-output systems (mMIMO) are the most prevalent candidates
for the next generation of wireless communication. Yet even with mMIMO systems the joint …
for the next generation of wireless communication. Yet even with mMIMO systems the joint …
Robust frequency-domain receivers for a transmission technique with directivity at the constellation level
P Montezuma, D Marques, V Astucia… - 2014 IEEE 80th …, 2014 - ieeexplore.ieee.org
It was shown recently that we can decompose multilevel constellations as the sum of
constant-envelope components which can be amplified and transmitted by separate …
constant-envelope components which can be amplified and transmitted by separate …
Low Complexity Millimeter Wave Point-to-point Communication: Interference Assessment of BPSK vs QPSK Decomposition
Power amplification and spectral efficiencies could be optimized with transmitter structures
employing several branches, each one associated to a signal component of the symbol to …
employing several branches, each one associated to a signal component of the symbol to …
Method and apparatus for the decomposition of signals with varying envelope into offset components
(57) ABSTRACT A method and apparatus for decomposition of signals with varying
envelope into offset components are disclosed here, that sample the time variant envelope …
envelope into offset components are disclosed here, that sample the time variant envelope …
On the design of iterative FDE receivers for OQAM modulations
This paper considers receiver designs for SC-FDE schemes (Single-Carrier with Frequency-
Domain Equalization) employing M-ary OQAM signals (Offset Quadrature Amplitude …
Domain Equalization) employing M-ary OQAM signals (Offset Quadrature Amplitude …