We consider distributed computations between two parties carried out over a noisy channel that may erase messages. Following a noise model proposed by Dani et al. (2018), the noise level observed by the parties during the computation in our setting is arbitrary and a priori unknown to the parties. We develop interactive coding schemes that adapt to the actual level of noise and correctly execute any two-party computation. Namely, in case the channel erases T transmissions, the coding scheme will take N + 2T transmissions using an alphabet of size 4 (alternatively, using 2N + 4T transmissions over a binary channel) to correctly simulate any binary protocol that takes N transmissions assuming a noiseless channel. We can further reduce the communication to N + T by relaxing the communication model and allowing parties to remain silent rather than forcing them to communicate in every round of the coding scheme. Our coding schemes are efficient, deterministic, have linear overhead both in their communication and round complexity, and succeed (with probability 1) regardless of the number of erasures T.
|Title of host publication||23rd International Conference on Principles of Distributed Systems, OPODIS 2019|
|Editors||Pascal Felber, Roy Friedman, Seth Gilbert, Avery Miller|
|Publisher||Schloss Dagstuhl- Leibniz-Zentrum fur Informatik GmbH, Dagstuhl Publishing|
|State||Published - Feb 2020|
|Event||23rd International Conference on Principles of Distributed Systems, OPODIS 2019 - Neuchatel, Switzerland|
Duration: 17 Dec 2019 → 19 Dec 2019
|Name||Leibniz International Proceedings in Informatics, LIPIcs|
|Conference||23rd International Conference on Principles of Distributed Systems, OPODIS 2019|
|Period||17/12/19 → 19/12/19|
Bibliographical noteFunding Information:
Research supported in part by the Israel Science Foundation (ISF) through
grant No. 1078/17.
© Ran Gelles and Siddharth Iyer; licensed under Creative Commons License CC-BY 23rd International Conference on Principles of Distributed Systems (OPODIS 2019).
- And phrases Interactive coding
- Distributed computation with noise
- Erasure channels
- Unbounded noise