Publications
374 results found
Jain A, Guenduez D, Kulkarni SR, et al., 2010, Energy-Distortion Tradeoff with Multiple Sources and Feedback, Information Theory and Applications Workshop (ITA), Publisher: IEEE, Pages: 142-146
Tuncel E, Guenduez D, 2010, Identification and Lossy Reconstruction in Noisy Databases, 2010 IEEE International Symposium on Information Theory, Publisher: IEEE, Pages: 191-195
Guenduez D, Simeone O, 2010, On the Capacity Region of a Multiple Access Channel with Common Messages, 2010 IEEE International Symposium on Information Theory, Publisher: IEEE, Pages: 470-474
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- Citations: 13
Gunduz D, Erkip E, Poor V, 2010, Source coding under security constraints, Securing Wireless Communications at the Physical Layer, Editors: Liu, Trappe, Publisher: Springer-Verlag
Guenduez D, Payaro M, 2010, Gaussian Two-way Relay Channel with Arbitrary Inputs, 21st Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Publisher: IEEE, Pages: 678-683
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- Citations: 3
Ng CTK, Guenduez D, Goldsmith AJ, et al., 2009, Distortion Minimization in Gaussian Layered Broadcast Coding With Successive Refinement, IEEE TRANSACTIONS ON INFORMATION THEORY, Vol: 55, Pages: 5074-5086, ISSN: 0018-9448
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- Citations: 45
Gunduz D, Erkip E, Goldsmith A, et al., 2009, Source and Channel Coding for Correlated Sources Over Multiuser Channels, IEEE TRANSACTIONS ON INFORMATION THEORY, Vol: 55, Pages: 3927-3944, ISSN: 0018-9448
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- Citations: 59
Simeone O, Gunduz D, Poor HV, et al., 2009, Compound Multiple-Access Channels With Partial Cooperation, IEEE TRANSACTIONS ON INFORMATION THEORY, Vol: 55, Pages: 2425-2441, ISSN: 0018-9448
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- Citations: 42
Gunduz D, Simeone O, Goldsmith AJ, et al., 2009, Multiple Multicasts with the Help of a Relay, IEEE Transactions on Information Theory, Vol: 56, Pages: 6142-6158
The problem of simultaneous multicasting of multiple messages with the helpof a relay terminal is considered. In particular, a model is studied in which arelay station simultaneously assists two transmitters in multicasting theirindependent messages to two receivers. The relay may also have an independentmessage of its own to multicast. As a first step to address this general model,referred to as the compound multiple access channel with a relay (cMACr), thecapacity region of the multiple access channel with a "cognitive" relay ischaracterized, including the cases of partial and rate-limited cognition. Then,achievable rate regions for the cMACr model are presented based ondecode-and-forward (DF) and compress-and-forward (CF) relaying strategies.Moreover, an outer bound is derived for the special case, called the cMACrwithout cross-reception, in which each transmitter has a direct link to one ofthe receivers while the connection to the other receiver is enabled onlythrough the relay terminal. The capacity region is characterized for a binarymodulo additive cMACr without cross-reception, showing the optimality of binarylinear block codes, thus highlighting the benefits of physical layer networkcoding and structured codes. Results are extended to the Gaussian channel modelas well, providing achievable rate regions for DF and CF, as well as for astructured code design based on lattice codes. It is shown that the performancewith lattice codes approaches the upper bound for increasing power, surpassingthe rates achieved by the considered random coding-based techniques.
Xie Y, Gunduz D, Goldsmith A, 2009, Multihop MIMO Relay Networks with ARQ, IEEE Global Telecommunications Conference (GLOBECOM 09), Publisher: IEEE, Pages: 6237-6242, ISSN: 1930-529X
Gunduz D, Simeone O, Goldsmith A, et al., 2009, Relaying Simultaneous Multicasts via Structured Codes, IEEE International Symposium on Information Theory (ISIT 2009), Publisher: IEEE, Pages: 2321-+
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- Citations: 1
Gunduz D, Tuncel E, Goldsmith A, et al., 2009, Identification over Multiple Databases, IEEE International Symposium on Information Theory (ISIT 2009), Publisher: IEEE, Pages: 2311-+
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- Citations: 1
Gunduz D, Yener A, Goldsmith A, et al., 2009, The Multi-way Relay Channel, IEEE International Symposium on Information Theory (ISIT 2009), Publisher: IEEE, Pages: 339-+
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- Citations: 84
Renk T, Jaekel H, Jondral FK, et al., 2009, Outage Capacity of Incremental Relaying at Low Signal-to-Noise Ratios, 70th IEEE Vehicular Technology Conference, Publisher: IEEE, Pages: 440-+, ISSN: 2577-2465
Simeone O, Gunduz D, Shamai Shitz S, 2009, Compound Relay Channel with Informed Relay and Destination, 47th Annual Allerton Conference on Communication, Control, and Computing, Publisher: IEEE, Pages: 692-+, ISSN: 2474-0195
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- Citations: 4
Gunduz D, Erkip E, 2008, Joint Source-Channel Codes for MIMO Block Fading Channels, IEEE Transactions Information Theory, Vol: 54, Pages: 116-134, ISSN: 0018-9448
We consider transmission of a continuous amplitude source over an L-blockRayleigh fading $M_t \times M_r$ MIMO channel when the channel stateinformation is only available at the receiver. Since the channel is notergodic, Shannon's source-channel separation theorem becomes obsolete and theoptimal performance requires a joint source -channel approach. Our goal is tominimize the expected end-to-end distortion, particularly in the high SNRregime. The figure of merit is the distortion exponent, defined as theexponential decay rate of the expected distortion with increasing SNR. Weprovide an upper bound and lower bounds for the distortion exponent withrespect to the bandwidth ratio among the channel and source bandwidths. For thelower bounds, we analyze three different strategies based on layered sourcecoding concatenated with progressive, superposition or hybrid digital/analogtransmission. In each case, by adjusting the system parameters we optimize thedistortion exponent as a function of the bandwidth ratio. We prove that thedistortion exponent upper bound can be achieved when the channel has only onedegree of freedom, that is L=1, and $\min\{M_t,M_r\}=1$. When we have moredegrees of freedom, our achievable distortion exponents meet the upper boundfor only certain ranges of the bandwidth ratio. We demonstrate that ourresults, which were derived for a complex Gaussian source, can be extended tomore general source distributions as well.
Guenduez D, Tuncel E, Nayak J, 2008, Rate Regions for the Separated Two-Way Relay Channel, 46th Annual Allerton Conference on Communication, Control and Computing, Publisher: IEEE, Pages: 1333-+, ISSN: 2474-0195
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- Citations: 48
Simeone O, Guenduez D, Poor HV, et al., 2008, Compound Multiple Access Channels with Conferencing Decoders, 46th Annual Allerton Conference on Communication, Control and Computing, Publisher: IEEE, Pages: 865-+, ISSN: 2474-0195
Nayak J, Tuncel E, Gunduz D, 2008, Wyner-Ziv coding over broadcast channels, IEEE Information Theory Workshop, Publisher: IEEE, Pages: 179-+
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- Citations: 2
Liu N, Guenduez D, Goldsmith AJ, et al., 2008, Interference Channels with Correlated Receiver Side Information, 46th Annual Allerton Conference on Communication, Control and Computing, Publisher: IEEE, Pages: 547-+, ISSN: 2474-0195
Gunduz D, Nayak J, Tuncel E, 2008, Wyner-Ziv Coding over Broadcast Channels Using Hybrid Digital/Analog TransmissionAC, IEEE International Symposium on Information Theory, Publisher: IEEE, Pages: 1543-+
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- Citations: 6
Yang J, Gunduz D, Brown DR, et al., 2008, Resource allocation for cooperative relaying, 42nd Annual Conference on Information Sciences and Systems, Publisher: IEEE, Pages: 848-+
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- Citations: 5
Gündüz D, Erkip E, 2007, Transmission of correlated sources over multiuser channels with receiver side information, Pages: 197-201
We consider transmission of correlated sources over multiuser channels where the receiver(s) have access to correlated side information. Our goal is to characterize necessary and sufficient conditions for lossless transmission and uncover scenarios where separation of source and channel coding, either in the traditional 'informational' sense (where both source and channel encoders and decoders are designed independently) or in the 'operational' sense (where the encoders are independent, but the source and channel decoding is done jointly), is optimal. We first study a multiple access channel where the source signals are independent given the receiver side information. We prove an informational source channel separation theorem for this communication system. We next investigate source and channel coding for the compound multiple access and interference channels. We give general sufficient conditions for lossless transmission of each source for both channels, and then provide necessary conditions that hold under certain assumptions on the nature of the source and the receiver side information. For the interference channel, the necessary conditions hinge on a strong source-channel interference condition which depends not only on the channel but on the source and side information correlations as well. Our results suggest the optimality of informational or operational separation depending on the correlation structure of the side information and the amount of interference.
Guenduez D, Erkip E, 2007, Source and channel coding for cooperative relaying, IEEE TRANSACTIONS ON INFORMATION THEORY, Vol: 53, Pages: 3454-3475, ISSN: 0018-9448
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- Citations: 71
Shutoy HY, Guenduez D, Erkip E, et al., 2007, Cooperative Source and Channel Coding for Wireless Multimedia Communications, IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING, Vol: 1, Pages: 295-307, ISSN: 1932-4553
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- Citations: 30
Gündüz D, Erkip E, 2007, Opportunistic cooperation by dynamic resource allocation, IEEE Transactions on Wireless Communications, Vol: 6, Pages: 1446-1454, ISSN: 1536-1276
We consider a Rayleigh fading wireless relay channel where communication is constrained by delay and average power limitations. Assuming partial channel state information at the transmitters and perfect channel state information at the receivers, we first study the delay-limited capacity of this system and show that, contrary to a single source-single destination case, a non-zero delay-limited capacity is achievable. We introduce opportunistic decode-and-forward (ODF) protocol which utilizes the relay depending on the channel state. Opportunistic cooperation significantly improves the delay-limited capacity of the system and performs very close to the cut-set bound. We also consider the system performance in terms of minimum outage probability. We show that ODF provides performance close to the cut-set bound from the outage probability perspective as well. Our results emphasize the importance of feedback for cooperative systems that have delay sensitive applications. © 2007 IEEE.
Gunduz D, Erkip E, 2007, Opportunistic cooperation by dynamic resource allocation, 37th Annual Conference on Information Science and Systems, Publisher: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, Pages: 1446-1454, ISSN: 1536-1276
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- Citations: 159
Ng CTK, Gunduz D, Goldsmith AJ, et al., 2007, Recursive power allocation in Gaussian layered broadcast coding with successive refinement, IEEE International Conference on Communications (ICC 2007), Publisher: IEEE, Pages: 889-+, ISSN: 1550-3607
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- Citations: 13
Gunduz D, Erkip E, 2007, Lossless transmission of correlated sources over a multiple access channel with side information, 17th Data Compression Conference, Publisher: IEEE COMPUTER SOC, Pages: 83-+, ISSN: 1068-0314
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- Citations: 4
Gunduz D, Ng CTK, Erkip E, et al., 2007, Source Transmission over Relay Channel with Correlated Relay Side Information, IEEE International Symposium on Information Theory, Publisher: IEEE, Pages: 611-+
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- Citations: 3
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