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Suboptimality of TDMA in the Low-Power Regime
2004
IEEE Transactions on Information Theory
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We consider multiaccess, broadcast, and interference channels with additive Gaussian noise. ...
' energy per bit are identical and broadcast channels where the receivers have identical signal-to-noise ratios. ...
Theorem 3 for TDMA and superposition coding, respectively. ...
doi:10.1109/tit.2004.825003
fatcat:qzmufuemyndjvfjlgjmovwjamm
Hybrid Digital-Analog Codes for Source-Channel Broadcast of Gaussian Sources over Gaussian Channels
[article]
2011
arXiv
pre-print
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When specialized to the open problem of broadcasting a white Gaussian source over an additive white Gaussian noise broadcast channel with bandwidth mismatch which has been the subject of several previous ...
A hybrid digital-analog coding strategy which combines source coding with side information, channel coding with side information, layered source coding, and superposition broadcast channel coding is presented ...
ACKNOWLEDGEMENT The authors would like to thank the reviewers for their careful reading and their suggestions which have helped improve the quality of this paper. ...
arXiv:1101.5207v1
fatcat:3g2uc4wv7rhtfbujmrcwjqfh5m
Performance regimes of uncoded linear communications over AWGN channels
2011
2011 45th Annual Conference on Information Sciences and Systems
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The conventional approach to JSCC which combines successive refinement with superposition coding is still digital and separable. ...
Joint source-channel coding (JSCC) has recently received increasing interest to address the varying nature of the wireless channel conditions (under mobility or multicast). ...
The achievable rate region can be obtained by superposition coding, where the encoder splits the bit-stream into lowpriority enhancement at rate R 1 and high-priority base at rate R 2 , channel-codes them ...
doi:10.1109/ciss.2011.5766155
dblp:conf/ciss/JakubczakSKG11
fatcat:wqtzoiq7gze25p7uz5t73icpkm
Hybrid digital-analog joint source-channel coding for broadcasting correlated Gaussian sources
2009
2009 IEEE International Symposium on Information Theory
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We consider the transmission of a bivariate Gaussian source S = (S1, S2) across a power-limited two-user Gaussian broadcast channel. ...
Using numerical examples, we demonstrate that for bandwidth compression, a three-layered coding scheme consisting of analog, superposition, and Costa coding performs well compared to the other provided ...
On the other hand, for the point-to-point transmission of a single Gaussian source through an additive white Gaussian noise (AWGN) channel it is well known that if the channel and source bandwidths are ...
doi:10.1109/isit.2009.5205799
dblp:conf/isit/BehrooziAL09
fatcat:nqqsbv4nyvdhvla62bwqfxbbda
Recent mum on the capacity of wideband channels in the low-power regime
2002
IEEE wireless communications
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Results on channel capacity and optimum signaling are reviewed for both point-to-point channels and multiuser channels. ...
This article gives a brief overview of recent results on the limits of reliable communication in the low-power wideband regime from the standpoint of information theory. ...
by TDMA. • Whereas in both multi-access and broadcast channels [26] , TDMA achieves the same as in the single-user channel reviewed in an earlier section, superposition requires less bandwidth than TDMA ...
doi:10.1109/mwc.2002.1028876
fatcat:eqcwgt3zjnby3ppnxvue5phn6i
On the Performance of Hybrid Digital-Analog Coding for Broadcasting Correlated Gaussian Sources
2011
IEEE Transactions on Communications
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We consider the problem of sending a bivariate Gaussian source = ( 1, 2) across a power-limited two-user Gaussian broadcast channel. ...
Index Terms-Gaussian broadcast channel, bandwidth compression/expansion, joint source-channel coding, hybrid digitalanalog (HDA) coding, Costa coding, Wyner-Ziv coding, layered coding, uncoded transmission ...
The two codes are superpositioned and transmitted across a power-limited Gaussian two-user broadcast channel. constraint and with respective noise variances 1 and 2 ( 1 > 2 ) (e.g., see [4] ). ...
doi:10.1109/tcomm.2011.101011.100483
fatcat:5q5mvkiypvf2ldg3v3skdc4edu
The capacity of downlink fading channels with variable rate and power
1997
IEEE Transactions on Vehicular Technology
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We obtain the Shannon capacity region of the downlink (broadcast) channel in fading and additive white Gaussian noise (AWGN) for time-division, frequency-division, and codedivision. ...
In addition, the optimal nonorthogonal code is a multiresolution code which does not increase the signal bandwidth. ...
For a total bandwidth constraint , the information bandwidth of each user's signal with these spreading codes is thus limited to . ...
doi:10.1109/25.618181
fatcat:wz6ymokrijfrleetl6krv5u2cy
Communication Via Decentralized Processing
2008
IEEE Transactions on Information Theory
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The Gaussian codebook capacity for the case where the agents do not have any decoding ability is characterized for the Gaussian channel. ...
For both general and degraded discrete memoryless channels, lower and upper bounds on the capacity are derived. ...
ACKNOWLEDGMENT The authors are indebted to Michael Peleg for helpful discussions. ...
doi:10.1109/tit.2008.924659
fatcat:4hyzzx4b7zfxxhhu6i3ybzlkse
Communication via decentralized processing
2005
Proceedings. International Symposium on Information Theory, 2005. ISIT 2005.
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The Gaussian codebook capacity for the case where the agents do not have any decoding ability is characterized for the Gaussian channel. ...
For both general and degraded discrete memoryless channels, lower and upper bounds on the capacity are derived. ...
ACKNOWLEDGMENT The authors are indebted to Michael Peleg for helpful discussions. ...
doi:10.1109/isit.2005.1523532
dblp:conf/isit/SanderovichSSK05
fatcat:qucp2vrnl5d7dlcxaxgf6islvm
Effect of Bit Error Rate in LDPC Based OFDM System over AWGN Raician And Raileigh Fading Channels
2015
International Journal on Recent and Innovation Trends in Computing and Communication
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The OFDM technique can be implemented using Low Density Parity Check (LDPC) Codes because of their ability to reaching near Shannon limit performance. ...
In this paper we are presenting the effect of Bit Error Rate (BER) with Signal to Noise Ratio (SNR) in OFDM system which is based on LDPC over Additive White Gaussian Noise (AWGN), Rician and Rayliegh ...
ADDITIVE WHITE GAUSSIAN noise (AWGN) channel is a universal channel model for analyzing modulation schemes. ...
doi:10.17762/ijritcc2321-8169.150377
fatcat:s3nfdrdcp5atjfe7gevs7la34m
Coded wireless video broadcast/ multicast
2011
Proceedings of the 6th ACM workshop on Wireless multimedia networking and computing - WMuNeP '11
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The cross-layer framework in [ [32]] incorporates adaptive power allocation and channel coding strategies by considering the interference-limited and bandwidth-limited characteristics of a broadcast/ ...
of scalable video coding at the source, modified multiple description coding for erasure protection, and superposition coding at the channel. ...
doi:10.1145/2069117.2069123
fatcat:xc7bt5fetfcprdiy5o3ino2eom
Constellation Shaping For Broadcast Channels In Practical Situations
2011
Zenodo
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Publication in the conference proceedings of EUSIPCO, Barcelona, Spain, 2011 ...
Superposition coding has been shown to reach the theoretical capacity limit for twousers AWGN broadcast channel using an infinite Gaussian input alphabet [1] . ...
The theoretical limit of the capacity region of the two users Gaussian broadcast channel is achieved using superposition coding of two Gaussian signals intended for the two users. ...
doi:10.5281/zenodo.42616
fatcat:jrblbfyfurbh5dymjdrmnz7fky
Comparison of Broadcasting Schemes for Infrastructure to Vehicular Communications
2012
IEEE transactions on intelligent transportation systems (Print)
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For these regimes, it is shown that the broadcast capacities associated with superposition coding are optimal. ...
This paper considers the broadcast capacity of broadcast schemes and evaluates and compares the broadcast capacity of strategies based on time-splitting, frequency-splitting and superposition coding. ...
The channel bandwidth is assumed to be W Hz and the communication channel is subject to additive white Gaussian noise with power spectral density of N o watts/Hz. ...
doi:10.1109/tits.2011.2182193
fatcat:n5rtluuz45b3nntrjrwme3r7i4
Comparative assessment of orthogonal and nonorthogonal multiplexing techniques for differentiated satellite broadcasting services
2015
2015 IEEE Symposium on Communications and Vehicular Technology in the Benelux (SCVT)
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requirements for broadcasting the same content. ...
In this scenario, the conventional additive white Gaussian noise (AWGN) channel with average power limitation is no longer an accurate model and nonlinear characteristics have to be taken into account. ...
In particular, for degraded AWGN broadcast channel, the superposition provides the maximum achievable rate [2] . ...
doi:10.1109/scvt.2015.7374227
dblp:conf/scvt/KayhanMTA15
fatcat:er766ujlhvg3dnpkh37cvkf344
Joint Source-Channel Coding for Quasi-Static Fading Channels with Quantized Feedback
2007
2007 IEEE International Symposium on Information Theory
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the number of the layers in the superposition coding scheme. ...
We show that the distortion exponent of limited feedback is equivalent to that of superposition coding without feedback, so long as the number of quantization levels in the feedback scheme is equal to ...
The case of a SIMO channel is similar and does not introduce additional insight. Performance results without feedback are based on superposition coding with N layers [6] . ...
doi:10.1109/isit.2007.4557553
dblp:conf/isit/EtemadiJ07
fatcat:jpupzvoj3zbelaok2isivavpuq
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