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Constellation Shaping For Broadcast Channels In Practical Situations
2011
Zenodo
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Publication in the conference proceedings of EUSIPCO, Barcelona, Spain, 2011 ...
These restrictions contribute to increase the gap between the capacity region achieved with infinite Gaussian inputs (for AWGN channel) and the throughput obtained in practical situations. ...
These results mainly deal with theoretical limits and do not straightforwardly apply in practical situations. ...
doi:10.5281/zenodo.42616
fatcat:jrblbfyfurbh5dymjdrmnz7fky
Optimization of Unicast Services Transmission for Broadcast Channels in Practical Situations
2012
Bell Labs technical journal
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The problem of constellation shaping for broadcast transmission in degraded channels remains a challenge. ...
This paper focuses on a practical situation where unicast service to each user is transmitted over broadcast channels. ...
The work will be extended to a two-user fading Gaussian broadcast channel to provide results in a theoretical framework closer to the practical situation of unicast services transmission since a real world ...
doi:10.1002/bltj.21521
fatcat:j4bjzqyvvnatfcyam44yy6sef4
Achievable rates optimization for broadcast channels using finite size constellations under transmission constraints
2013
EURASIP Journal on Wireless Communications and Networking
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In this paper, maximal achievable rate regions are derived for power-constrained AWGN broadcast channel involving finite constellations and two users. ...
The improvement for each scheme is evaluated in terms of SNR savings for target achievable rates or/and percentage of gain in achievable rates for one user compared to a reference scheme. ...
As in previous works on broadcasting, this situation serves as a reference for the more advanced schemes. ...
doi:10.1186/1687-1499-2013-254
fatcat:3l5btyq2tjemfarmcks7swu7by
Amplitude Phase Shift Keying Constellation Design and its Applications to Satellite Digital Video Broadcasting
[chapter]
2010
Digital Video
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Practically, a smaller shaping gain can be achieved in finite constellations as is the case in M-APSK constellations. ...
Therefore, the shaping gain for R=3 and 3.5 bits/channel use is about 0.3 dB in both cases. ...
Amplitude Phase Shift Keying Constellation Design and its Applications to Satellite Digital Video Broadcasting, Digital Video, Floriano De Rango (Ed.), ISBN: 978-953-7619-70-1, InTech, Available from: ...
doi:10.5772/8042
fatcat:unej7mdy3najzn33a5qg67s5de
Achievable Secrecy Rates for the Broadcast Channel with Confidential Message and Finite Constellation Inputs
2014
IEEE Transactions on Communications
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We show also that the secrecy constraint can change the shape of the achievable rate region in superposition modulation used in some standards when symbols are equiprobable. ...
The maximization of the secrecy rate for wiretap channels is also studied as a particular case of the BCCM problem. ...
Maël Le Treust for the helpful discussions and Prof. Pablo Piantanida for the valuable comments and suggestions to improve the quality of the paper. ...
doi:10.1109/tcomm.2014.2374604
fatcat:xyzu34qjpzhujmnca47y4yhkgi
Trellis and Convolutional Precoding for Transmitter- Based Interference Presubtraction
2005
IEEE Transactions on Communications
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For intermediate SNR channels, a combination of the two schemes is shown to recover both power and shaping losses. ...
Index Terms-Broadcast channel, channels with noncausal side information, convolutional codes, dirty-paper precoding, shaping codes, Tomlinson-Harashima precoding (THP), trellis codes, trellis precoding ...
In a shaping code for an ISI channel, a small amount of constellation expansion suffices, thus a rate-1/2 shaping code is sufficient. ...
doi:10.1109/tcomm.2005.851605
fatcat:sz3ytksfi5do3lcgjy6kxqy3g4
Constellation Design for Future Communication Systems: A Comprehensive Survey
2021
IEEE Access
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Although the gains achieved for uncoded schemes in higher dimensions are more than 1 dB, the authors foresee some practical problems. ...
Cubic constellations, for instance, are commonly used for simple data communications and in OFDM systems for channel estimation. ...
He is currently involved in research activities related to broadcasting in a 5G environment. Dr. ...
doi:10.1109/access.2021.3090774
fatcat:zolukseecffwxl2eylkle63swy
Lattice-Reduction-Aided Broadcast Precoding
2004
IEEE Transactions on Communications
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We describe a low-complexity lattice-reduction-aided precoding scheme for multiuser broadcast scenarios. ...
valid in this situation. ...
The simulations conducted show that for system dimensions of practical interest, the expensive search for the precoding symbol in [1] can be avoided using the Babai approximation, at only little cost ...
doi:10.1109/tcomm.2004.838732
fatcat:nrb63o7eejd3pn5v5jwgbk6j3u
Optimal Rate-Diverse Wireless Network Coding
[article]
2016
arXiv
pre-print
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This paper proposes an encoding/decoding framework for achieving the optimal channel capacities of the two-user broadcast channel where each user (receiver) has the message targeted for the other user ...
A goal is to simultaneously achieve/approach the single-user non-broadcast channel capacities of the two users with a single broadcast transmission by applying network coding. ...
For the decoding of the shaped LDLC, the receiver needs to know the constellation of b u,i . Here, we can empirically choose a constellation for b u,i . ...
arXiv:1509.07250v2
fatcat:7kj5idvduvbg7gcewwdfcg3dvq
A Survey on Design and Performance of Higher-Order QAM Constellations
[article]
2020
arXiv
pre-print
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However, only the square constellations are not efficient for varying channel conditions and rate requirements, and hence, odd power of 2 constellations were introduced. ...
For odd power of 2 constellations, rectangular QAM (RQAM) is commonly used. ...
In [116] , for non-linear fiber channel, probabilistic shaping of QAM is performed. In [117] , for AWGN channel, both the geometric and probabilistic shaping are studied. ...
arXiv:2004.14708v1
fatcat:okupeb57cnaa3kjf3gyzhludde
Hexagonal Constellations for Adaptive Physical-Layer Network Coding 2-Way Relaying
2014
IEEE Communications Letters
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We focus on a constellation design for adaptive physical-layer network coding strategy in a wireless 2-way relay channel. ...
In this paper, we target a design of constellations avoiding all the singularities without the cardinality extension. ...
Considering more practical situation with CSI at the receivers, PLNC performance emerges a new type of fading phenomenon. ...
doi:10.1109/lcomm.2013.122713.132526
fatcat:qhnk4icoanhklgypxzwnjva4ei
A Survey on Higher-Order QAM Constellations: Technical Challenges, Recent Advances, and Future Trends
2021
IEEE Open Journal of the Communications Society
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However, only square constellations are not sufficient for varying channel conditions and rate requirements, thus, efficient odd power of 2 constellations were introduced. ...
for different constellation orders are presented. ...
In [195] , authors derived the generalized log likelihood ratio for soft decision channel decoding for QAM constellations. ...
doi:10.1109/ojcoms.2021.3067384
fatcat:xx3tpsasevbqjg3ej2vktivqdi
Signal space cooperative communication
2010
IEEE Transactions on Wireless Communications
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broadcast phase and the relay phase. ...
The analytical study of the proposed scheme leads to the development of two design criteria for the constellation expansion approach. ...
In this way, good channel realizations for some of the signal components can compensate for the effect of possible deep fade situations over the rest of the components. ...
doi:10.1109/twc.2010.04.090059
fatcat:y5rbxczc7vh2bfjnldtenuoxe4
Simulation and Measurement of the Transmission Distortions of the Digital Television DVB-T/H (Part 1: Modulator for Digital Terrestrial Television)
2010
Radioengineering
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In this part the modulator performance characteristics and its simulation and laboratory measurements are presented with focus on typical DVB-T/H broadcasting scenario – large SFN network for fixed reception ...
Impact of the modulator imperfections on Modulation Error Rate from I/Q constellation and Bit Error Rates before and after Viterbi decoding in DVB-T/H signal decoding are evaluated and discussed. ...
dB in the AWGN (Gaussian) channel for stationary reception. ...
doaj:b875a959de074270aec7ead216e0553c
fatcat:a72vdul4gvdfppaijvznofdpha
MATLAB Simulation and HDL Implementation of DVB-S2 Modulator
2020
VOLUME-8 ISSUE-10, AUGUST 2019, REGULAR ISSUE
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It tends to be utilized for re-enactment of entire preparation in DVB-S2 transmitter including stream adjustment, FEC coding with interleaving, modulation, channel damage & also opposite tasks in the receiver ...
This Project is centered around reproduction of the Digital Video Broadcasting – Satellite second era computerized TV transmission. For this simulation, an application in MATLAB is created. ...
Yogesh Parmar for his guidance, encouragement and support at every moment of my research work. I would also like to thank my colleagues and friend for the things that they have taught me. ...
doi:10.35940/ijitee.e2178.039520
fatcat:txdnhruzdve75pg6nrer2awqpy
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