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Doctoral Thesis
On Heating Up and Fading in Communication Channels. Konstanz: Hartung Gorre Verlag, 2009. ETH Series in Information Theory and its Applications, Vol. 5, Ed. Amos Lapidoth. ISBN: 3-86628-261-3. [ PDF ]
Master's Thesis
On the Asymptotic Capacity of Multiple-Input Single-Output Fading Channels with Memory. ETH Zurich, Switzerland, 2004. [ PDF ]
Semester Projects
K. V. Harsha, J. Ravi, and T. Koch, "On the second-order asymptotics of the Hoeffding test and other divergence tests," March 2024. Submitted to the IEEE Transactions on Information Theory. [ arXiv ]
G. Villacrés and T. Koch, "Wireless networks of bounded capacity," presented at 2016 IEEE International Symposium on Information Theory (ISIT), July 2015. [ arXiv ]
T. Koch, "On the capacity of the dither-quantized Gaussian channel," April 2014. [ arXiv ]
T. Koch and A. Lapidoth, "Increased capacity per unit-cost by oversampling," presented at IEEE 26th Convention of Electrical and Electronics Engineers in Israel, September 2010. [ arXiv ]
J. Ravi and T. Koch, "Scaling laws for Gaussian random many-access channels," IEEE Transactions on Information Theory, Vol. 68, No. 4, April 2022. [ IEEE Xplore ] [ e-Archivo ] [ PDF ]
A. T. Asyhari, T. Koch, and A. Guillén i Fàbregas, "Nearest neighbor decoding and pilot-aided channel estimation for fading channels," Entropy, Vol. 22, No. 9: 971, August 2020. [ Entropy ] [ e-Archivo ] [ PDF ]
A. Lancho, J. Östman, G. Durisi, T. Koch, and G. Vazquez-Vilar, "Saddlepoint approximations for short-packet wireless communications," IEEE Transactions on Wireless Communications, Vol. 19, No. 7, July 2020. [ IEEE Xplore ] [ e-Archivo ] [ PDF ]
A. Lancho, T. Koch, and G. Durisi, "On single-antenna Rayleigh block-fading channels at finite blocklength," IEEE Transactions on Information Theory, Vol. 66, No. 1, January 2020. [ IEEE Xplore ] [ e-Archivo ] [ PDF ]
B. C. Geiger and T. Koch, "On the information dimension of stochastic processes," IEEE Transactions on Information Theory, Vol. 65, No. 10, October 2019. [ IEEE Xplore ] [ e-Archivo ] [ PDF ]
Y. Liu, P. M. Olmos, and T. Koch, "A probabilistic peeling decoder to efficiently analyze generalized LDPC codes over the BEC," IEEE Transactions on Information Theory, Vol. 65, No. 8, August 2019. [ IEEE Xplore ] [ e-Archivo ] [ PDF ]
G. Villacrés, T. Koch, A. Sezgin, and G. Vazquez-Vilar, "Robust signaling for bursty interference," Entropy, Vol. 20, No. 11: 870, November 2018. [ Entropy ] [ PDF ]
T. Koch and G. Vazquez-Vilar, "A rigorous approach to high-resolution entropy-constrained vector quantization," IEEE Transactions on Information Theory, Vol. 64, No. 4, April 2018. [ IEEE Xplore ] [ e-Archivo ] [ PDF ]
T. Koch, "The Shannon lower bound is asymptotically tight," IEEE Transactions on Information Theory, Vol. 62, No. 11, November 2016. [ IEEE Xplore ] [ e-Archivo ] [ PDF ]
G. Durisi, T. Koch, and P. Popovski, "Towards massive, ultrareliable, and low-latency wireless communication with short packets," Proceedings of the IEEE, Vol. 104, No. 9, September 2016. [ IEEE Xplore ] [ e-Archivo ] [ PDF ]
G. Durisi, T. Koch, J. Östman, Y. Polyanskiy, and W. Yang, "Short-packet communications over multiple-antenna Rayleigh-fading channels," IEEE Transactions on Communications, Vol. 64, No. 2, February 2016. [ IEEE Xplore ] [ e-Archivo ] [ PDF ]
W. Yang, G. Durisi, T. Koch, and Y. Polyanskiy, "Quasi-static multiple-antenna fading channels at finite blocklength," IEEE Transactions on Information Theory, Vol. 60, No. 7, July 2014. [ IEEE Xplore ] [ e-Archivo ] [ PDF ]
A. Pastore, T. Koch, and J. R. Fonollosa, "A rate-splitting approach to fading channels with imperfect channel-state information," IEEE Transactions on Information Theory, Vol. 60, No. 7, July 2014. [ IEEE Xplore ]
A. Tauste Campo, G. Vazquez-Vilar, A. Guillén i Fàbregas, T. Koch, and A. Martinez, "A derivation of the source-channel error exponent using non-identical product distributions," IEEE Transactions on Information Theory, Vol. 60, No. 6, June 2014. [ IEEE Xplore ] [ e-Archivo ] [ PDF ]
A. Alvarado, F. Brännström, E. Agrell, and T. Koch, "High-SNR asymptotics of mutual information for discrete constellations with applications to BICM," IEEE Transactions on Information Theory , Vol. 60, No. 2, February 2014. [ IEEE Xplore ] [ e-Archivo ] [ PDF ]
T. Koch and A. Lapidoth, "At low SNR, asymmetric quantizers are better," IEEE Transactions on Information Theory, Vol. 59, No. 9, September 2013. [ IEEE Xplore ] [ e-Archivo ] [ PDF ]
T. Koch and G. Kramer, "On noncoherent fading relay channels at high signal-to-noise ratio," IEEE Transactions on Information Theory, Vol. 59, No. 4, April 2013. [ IEEE Xplore ] [ e-Archivo ] [ PDF ]
T. Koch and A. Lapidoth, "On multipath fading channels at high SNR," IEEE Transactions on Information Theory, Vol. 56, No. 12, December 2010. [ IEEE Xplore ] [ PDF ]
T. Koch and A. Lapidoth, "Gaussian fading is the worst fading," IEEE Transactions on Information Theory, Vol. 56, No. 3, March 2010. [ IEEE Xplore ] [ PDF ]
T. Koch, A. Lapidoth, and P. P. Sotiriadis, "Channels that heat up," IEEE Transactions on Information Theory, Vol. 55, No. 8, August 2009. [ IEEE Xplore ] [ PDF ]
B. Vigoda, J. Dauwels, M. Frey, N. Gershenfeld, T. Koch, H.-A. Loeliger, and P. Merkli, "Synchronization of pseudorandom signals by forward-only message passing with application to electronic circuits," IEEE Transactions on Information Theory, Vo. 52, No. 6, August 2006. [ IEEE Xplore ] [ PDF ]
K. V. Harsha, J. Ravi, and T. Koch, "Second-order asymptotics of divergence tests," in Proceedings International Zurich Seminar on Information and Communication (IZS), Zurich, Switzerland, March 6-8, 2024. [ PDF ] [ ETH Library ]
K. V. Harsha, J. Ravi, and T. Koch, "Second-order asymptotics of Hoeffding-like hypothesis tests," in Proceedings IEEE Information Theory Workshop (ITW), Mumbai, India, November 1-9, 2022. [ IEEE Xplore ] [ e-Archivo ]
J. Ravi and T. Koch, "Scaling laws for many-access channels and unsourced random access," invited, in Proceedings 55th Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, USA, October 31 - November 3, 2021. [ IEEE Xplore ] [ e-Archivo ]
J. Ravi and T. Koch, "Capacity per unit-energy of Gaussian random many-access channels," in Proceedings IEEE International Symposium on Information Theory (ISIT), Los Angeles, CA, USA, June 21-26, 2020. [ IEEE Xplore ] [ e-Archivo ]
C. Qi and T. Koch, "A high-SNR normal approximation for MIMO Rayleigh block-fading channels," in Proceedings IEEE International Symposium on Information Theory (ISIT), Los Angeles, CA, USA, June 21-26, 2020. [ IEEE Xplore ] [ e-Archivo ]
G. Villacrés Estrada, T. Koch, and G. Vazquez-Vilar, "Bursty wireless networks of bounded capacity," in Proceedings IEEE International Symposium on Information Theory (ISIT), Los Angeles, CA, USA, June 21-26, 2020. [ IEEE Xplore ] [ e-Archivo ]
J. Ravi and T. Koch, "On the per-user probability of error in Gaussian many-access channels," in Proceedings International Zurich Seminar on Information and Communication (IZS), Zurich, Switzerland, February 26-28, 2020. [ PDF ] [ ETH Library ]
A. Lancho, J. Östman, T. Koch, and G. Vazquez-Vilar, "Finite-blocklength approximations for noncoherent Rayleigh block-fading channels," invited, in Proceedings 53rd Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, USA, November 3-6, 2019. [ IEEE Xplore ] [ e-Archivo ]
A. Lancho, J. Östman, G. Durisi, T. Koch, and G. Vazquez-Vilar, "Saddlepoint approximations for noncoherent single-antenna Rayleigh block-fading channels," in Proceedings IEEE International Symposium on Information Theory (ISIT), Paris, France, July 7-12, 2019. [ IEEE Xplore ] [ e-Archivo ]
J. Ravi and T. Koch, "Capacity per unit-energy of Gaussian many-access channels," in Proceedings IEEE International Symposium on Information Theory (ISIT), Paris, France, July 7-12, 2019. [ IEEE Xplore ] [ e-Archivo ]
W. Huleihel, Z. Goldfeld, T. Koch, M. Madiman, and M. Médard, "Design of discrete constellations for peak-power-limited complex Gaussian channels," in Proceedings IEEE International Symposium on Information Theory (ISIT), Vail, CO, USA, June 17-22, 2018. [ IEEE Xplore ] [ e-Archivo ]
G. Vazquez-Vilar, A. Guillén i Fàbregas, T. Koch, and A. Lancho, "Saddlepoint approximation of the error probability of binary hypothesis testing," in Proceedings IEEE International Symposium on Information Theory (ISIT), Vail, CO, USA, June 17-22, 2018. [ IEEE Xplore ] [ e-Archivo ]
A. Lancho, T. Koch, and G. Durisi, "Normal approximations for fading channels," invited, in Proceedings 52nd Annual Conference on Information Sciences and Systems, Princeton, NJ, USA, March 21-23, 2018. [ IEEE Xplore ] [ e-Archivo ]
B. C. Geiger and T. Koch, "On the information dimension rate of multivariate Gaussian processes," invited, in Proceedings International Zurich Seminar on Information and Communication (IZS), Zurich, Switzerland, February 21-23, 2018. [ PDF ] [ ETH Library ]
B. C. Geiger and T. Koch, "On the information dimension rate of stochastic processes," in Proceedings IEEE International Symposium on Information Theory (ISIT), Aachen, Germany, June 25-30, 2017. [ IEEE Xplore ] [ e-Archivo ]
A. Lancho, T. Koch, and G. Durisi, "A high-SNR normal approximation for single-antenna Rayleigh block-fading channels,"
in Proceedings IEEE International Symposium on Information Theory (ISIT),
Aachen, Germany, June 25-30, 2017.
Finalist for the 2017 IEEE Jack Keil Wolf ISIT Student Paper Award. [ IEEE Xplore ]
[ e-Archivo ]
Y. Liu, P. M. Olmos, and T. Koch, "On LDPC code ensembles with generalized constraints," in Proceedings IEEE International Symposium on Information Theory (ISIT), Aachen, Germany, June 25-30, 2017. [ IEEE Xplore ] [ e-Archivo ]
T. Koch and G. Vazquez-Vilar, "A general rate-distortion converse bound for entropy-constrained scalar quantization," in Proceedings IEEE International Symposium on Information Theory (ISIT), Barcelona, Spain, July 10-15, 2016. [ IEEE Xplore ]
G. Villacrés Estrada and T. Koch, "Wireless networks of bounded capacity," in Proceedings IEEE International Symposium on Information Theory (ISIT), Barcelona, Spain, July 10-15, 2016. [ IEEE Xplore ]
T. Koch, "A necessary and sufficient condition for the asymptotic tightness of the Shannon lower bound," in Proceedings International Zurich Seminar on Communications (IZS), Zurich, Switzerland, March 2-4, 2016. [ PDF ] [ ETH Library ]
J. Östman, W. Yang, G. Durisi, and T. Koch, "Diversity versus multiplexing at finite blocklength," invited, in Proceedings International Symposium on Wireless Communication Systems (ISWCS), Barcelona, Spain, August 26 - 29, 2014. [ IEEE Xplore ]
T. Koch, "On the dither-quantized Gaussian channel at low SNR," in Proceedings IEEE International Symposium on Information Theory (ISIT), Honolulu, HI, USA, June 29 - July 4, 2014. [ IEEE Xplore ]
W. Yang, G. Durisi, T. Koch, and Y. Polyanskiy, "Dispersion of quasi-static MIMO fading channels via Stokes' Theorem," in Proceedings IEEE International Symposium on Information Theory (ISIT), Honolulu, HI, USA, June 29 - July 4, 2014. [ IEEE Xplore ]
A. Pastore, T. Koch, and J. R. Fonollosa, "A Rate-Splitting Approach to Fading Multiple-Access Channels with Imperfect Channel-State Information," in Proceedings International Zurich Seminar on Communications (IZS), Zurich, Switzerland, February 26-28, 2014. [ PDF ] [ ETH Library ]
A. Alvarado, F. Brännström, E. Agrell, and T. Koch, "High-SNR asymptotics of mutual information for discrete constellations," in Proceedings IEEE International Symposium on Information Theory (ISIT), Istanbul, Turkey, July 7-12, 2013. [ IEEE Xplore ]
W. Yang, G. Durisi, T. Koch, and Y. Polyanskiy, "Quasi-static SIMO fading channels at finite blocklength," In Proceedings IEEE International Symposium on Information Theory (ISIT), Istanbul, Turkey, July 7-12, 2013. [ IEEE Xplore ]
A. Alvarado, F. Brännström, E. Agrell, and T. Koch,
"On the asymptotic optimality of Gray codes for BICM and one-dimensional constellations,"
poster, IEEE Communication Theory Workshop (CTW), Phuket, Thailand, June 23-26, 2013.
Won the CTW 2013 Best Poster Award.
[ PDF ]
G. Durisi, A. Tarable, and T. Koch, "On the multiplexing gain of MIMO microwave backhaul links affected by phase noise," in Proceedings IEEE International Conference on Communicactions (ICC), Budapest, Hungary, June 9-13, 2013. [ PDF ]
A. Pastore, T. Koch, and J. R. Fonollosa, "Improved capacity lower bounds for fading channels with imperfect CSI using rate splitting," in Proceedings IEEE 27th Convention of Electrical and Electronics Engineers in Israel, Eilat, Israel, November 14-17, 2012. [ IEEE Xplore ]
W. Yang, G. Durisi, T. Koch, and Y. Polyanskiy,
"Diversity versus channel knowledge at finite block-length,"
in Proceedings IEEE Information Theory Workshop (ITW), Lausanne, Switzerland, September 3-7, 2012.
Won the IEEE Sweden VT-COM-IT Joint Chapter Best Student Conference Paper Award.
[ PDF ]
T. Koch, A. Martinez, and A. Guillén i Fàbregas, "The capacity loss of dense constellations," in Procedings IEEE International Symposium on Information Theory (ISIT), Boston, MA, USA, July 1-6, 2012. [ IEEE Xplore ] [ PDF ]
A. Tauste Campo, G. Vazquez-Vilar, A. Guillén i Fàbregas, T. Koch, and A. Martinez, "Achieving Csiszar's source-channel coding exponent with product distributions," in Proceedings IEEE International Symposium on Information Theory (ISIT), Boston, MA, USA, July 1-6, 2012. [ IEEE Xplore ]
A. Tauste Campo, G. Vazquez-Vilar, A. Guillén i Fàbregas, T. Koch, and A. Martinez, "Random coding bounds that attain the joint source-channel exponent," invited, in Proceedings 46th Annual Conference on Information Sciences and Systems, Princeton, NJ, March 21-23, 2012. [ PDF ]
T. Koch and A. Lapidoth, "One-bit quantizers for fading channels," in Proceedings International Zurich Seminar on Communications (IZS), Zurich, Switzerland, February 29 - March 2, 2012. [ PDF ] [ ETH Library ]
T. Koch, "On bandlimited fading channels at high SNR," invited, in Proceedings 4th International Symposium on Applied Sciences in Biomedical and Communication Technologies (ISABEL), Barcelona, Spain, October 26-29, 2011. [ ACM ]
A. T. Asyhari, T. Koch, and A. Guillén i Fàbregas, "Nearest neighbour decoding with pilot-assisted channel estimation for fading multiple-access channels," in Proceedings 49th Allerton Conference on Communication, Control, and Computing, Monticello, IL, September 28-30, 2011. [ IEEE Xplore ]
A. T. Asyhari, T. Koch, and A. Guillén i Fàbregas, "Nearest neighbour decoding and pilot-aided channel estimation in stationary Gaussian flat-fading channels," in Proceedings IEEE International Symposium on Information Theory (ISIT), St. Petersburg, Russia, July 31 - August 5, 2011. [ IEEE Xplore ]
T. Koch and A. Lapidoth, "Asymmetric quantizers are better at low SNR," in Proceedings IEEE International Symposium on Information Theory (ISIT), St. Petersburg, Russia, July 31 - August 5, 2011. [ IEEE Xplore ]
T. Koch and A. Lapidoth, "Increased capacity per unit-cost by oversampling," in Proceedings IEEE 26th Convention of Electrical and Electronics Engineers in Israel, Eilat, Israel, November 17-20, 2010. [ IEEE Xplore ]
T. Koch, "Is the assumption of perfect channel-state information in fading channels a good assumption?", invited, in Proceedings 2nd International Symposium on Applied Sciences in Biomedical and Communication Technologies (ISABEL), Bratislava, Slovak Republic, November 24-27, 2009. [ IEEE Xplore ]
T. Koch and A. Lapidoth, "Multipath channels of unbounded capacity," in Proceedings IEEE 25th Convention of Electrical and Electronics Engineers in Israel, Eilat, Israel, December 3-5, 2008. [ IEEE Xplore ]
T. Koch and A. Lapidoth, "On multipath fading channels at high SNR," in Proceedings IEEE International Symposium on Information Theory (ISIT), Toronto, Canada, July 6-11, 2008. [ IEEE Xplore ]
T. Koch and A. Lapidoth, "Multipath channels of bounded capacity," in Proceedings IEEE Information Theory Workshop (ITW), Porto, Portugal, May 5-9, 2008. [ IEEE Xplore ]
T. Koch, A. Lapidoth, and P. P. Sotiriadis, "A hot channel," in Proceedings EEE Information Theory Workshop (ITW), Lake Tahoe, CA, USA, September 2-6, 2007. [ IEEE Xplore ]
T. Koch, A. Lapidoth, and P. P. Sotiriadis, "A channel that heats up," in Proceedings IEEE International Symposium on Information Theory (ISIT), Nice, France, June 24-29, 2007. [ IEEE Xplore ]
T. Koch and A. Lapidoth, "Gaussian fading is the worst fading," in Proceedings IEEE International Symposium on Information Theory (ISIT), Seattle, WA, USA, July 9-14, 2006. [ IEEE Xplore ]
T. Koch and G. Kramer, "On the pre-log of Gaussian fading relay channels," in Proceedings IEEE International Symposium on Information Theory (ISIT), Adelaide, Australia, September 4-9, 2005. [ IEEE Xplore ]
T. Koch and A. Lapidoth, "The fading number and degrees of freedom in non-coherent MIMO fading channels: A peace pipe," in Proceedings IEEE International Symposium on Information Theory (ISIT), Adelaide, Australia, September 4-9, 2005. [ IEEE Xplore ]
T. Koch and A. Lapidoth, "Degrees of freedom in non-coherent stationary MIMO fading channels," in Proceedings Winterschool on Coding and Information Theory, Bratislava, Slovak Republic, February 20-25, 2005. [ PDF ]