Asymmetric compute-and-forward

Vasilis Ntranos, Viveck Ramesh Cadambe, Bobak Nazer, Giuseppe Caire

Research output: Chapter in Book/Report/Conference proceedingConference contribution

14 Scopus citations

Abstract

This paper generalizes the compute-and-forward framework to allow for unequal (or asymmetric) power allocation across transmitters. Each transmitter's codebook is formed using a fine lattice that is chosen to ensure decodability as well as a coarse lattice that is chosen to enforce the power constraint. The employed lattices are drawn from a nested lattice chain, which makes it possible for the receivers to decode integerlinear combinations of the transmitted codewords. Like the original compute-and-forward framework, this scheme has a natural interpretation in terms of sending linear combinations of messages that are vectors over a finite field. Interestingly, each transmitter's power constraint and noise tolerance can be viewed in terms of restrictions on the available 'signal levels'. That is, transmitters with less power must send zeros along higher order levels and transmitters that need to tolerate more noise must send zeros along lower order levels.

Original languageEnglish (US)
Title of host publication2013 51st Annual Allerton Conference on Communication, Control, and Computing, Allerton 2013
PublisherIEEE Computer Society
Pages1174-1181
Number of pages8
ISBN (Print)9781479934096
DOIs
StatePublished - Jan 1 2013
Event51st Annual Allerton Conference on Communication, Control, and Computing, Allerton 2013 - Monticello, IL, United States
Duration: Oct 2 2013Oct 4 2013

Other

Other51st Annual Allerton Conference on Communication, Control, and Computing, Allerton 2013
CountryUnited States
CityMonticello, IL
Period10/2/1310/4/13

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Control and Systems Engineering

Fingerprint Dive into the research topics of 'Asymmetric compute-and-forward'. Together they form a unique fingerprint.

  • Cite this

    Ntranos, V., Cadambe, V. R., Nazer, B., & Caire, G. (2013). Asymmetric compute-and-forward. In 2013 51st Annual Allerton Conference on Communication, Control, and Computing, Allerton 2013 (pp. 1174-1181). [6736658] IEEE Computer Society. https://doi.org/10.1109/Allerton.2013.6736658