JNL Research Group
University of Notre Dame
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Brian Dunn
Education
M.S., University of Notre Dame, 2005.
B.S., Purdue University, 2003.
Research Summary
In recent years it has become of increasing interest to send multimedia information over a wireless link, such as voice over a cellular network or audio to wireless speakers. These applications in wireless environments present new technical challenges that must be overcome, i.e. multi-path fading, shadowing, or communications subject to delay or complexity constraints. Various techniques have evolved to combat these problems, most of which rely on exploiting some form of diversity to ensure a version of the source meeting some fidelity criterion is always available.
The goal of this research is to more completely characterize the performance of several techniques used in this wireless setting, and to obtain information theoretic bounds on the achievable performance. Specifically, communication on the MIMO non-ergodic Rayleigh fading channel is studied. Some of the methods of interest include hybrid digital-analog schemes, successive refinement, and multiple descriptions coding---all of which benefit from some form of joint source-channel coding.
Publications
| [1] | B. P. Dunn, “Delay Constrained Multimedia Communications: Comparing Source-Channel Approaches for Quasi-Static Fading Channels,” Master's thesis, University of Notre Dame, Notre Dame, IN, Aug. 2005. [ PDF ] |
| [2] | B. P. Dunn and J. N. Laneman, “Characterizing Source-Channel Diversity Approaches Beyond the Distortion Exponent,” in Proc. Allerton Conf. Communications, Control, and Computing, Monticello, IL, Sept. 2005, invited paper. [ PDF ] |
| [3] | B. P. Dunn and J. N. Laneman, “Rate-Delay Tradeoffs for Communicating a Bursty Source over an Erasure Channel with Feedback,” in Proc. Int. Zürich Seminar on Communications, Zürich, Switzerland, Mar. 2008. [ PDF ] |
| [4] | B. P. Dunn, M. L. Dickens, and J. N. Laneman, “Design and Implementation of a Portable Software Radio,” in Proc. Int. Symp. Adv. Radio Tech. (ISART), Boulder, CO, June 2008. [ PDF ] |
| [5] | B. P. Dunn and J. N. Laneman, “Basic Limits on Protocol Information in Slotted Communication Networks,” in Proc. IEEE Int. Symp. Information Theory (ISIT), Toronto, Canada, July 2008. [ PDF ] |
| [6] | M. L. Dickens, B. P. Dunn, and J. N. Laneman, “Design and Implementation of a Portable Software Radio,” IEEE Commun. Mag., vol. 46, no. 8, pp. 58-66, Aug. 2008. [ PDF ] |
| [7] | M. L. Dickens, B. P. Dunn, and J. N. Laneman, “Portable Software Radios using Commodity Hardware and Open-Source Software,” in Proc. SDR '08, Washington, DC, Oct. 2008. [ PDF ] |
| [8] | B. P. Dunn, M. Bloch, and J. N. Laneman, “Secure Bits through Queues,” in Proc. IEEE Information Theory Workshop (ITW), Volos, Greece, June 2009. [ PDF ] |