### Abstract

The symmetric K user interference channel with fully connected topology is considered, in which (a) each receiver suffers interference from all other K - 1 transmitters, and (b) each transmitter has causal and noiseless feedback from its respective receiver. The number of generalized degrees of freedom (GDoF) is characterized in terms of α, where the interference-to-noise ratio (INR) is given by INR = SNR ^{α}. It is shown that the number of per-user GDoF of this network is the same as that of the 2-user interference channel with feedback, except for α = 1, for which existence of feedback does not help in terms of GDoF. The coding scheme proposed for this network, termed cooperative interference alignment, is based on two key ingredients, namely, interference alignment and interference decoding.

Original language | English (US) |
---|---|

Title of host publication | 2012 IEEE International Symposium on Information Theory Proceedings, ISIT 2012 |

Pages | 3125-3129 |

Number of pages | 5 |

DOIs | |

State | Published - Oct 22 2012 |

Event | 2012 IEEE International Symposium on Information Theory, ISIT 2012 - Cambridge, MA, United States Duration: Jul 1 2012 → Jul 6 2012 |

### Publication series

Name | IEEE International Symposium on Information Theory - Proceedings |
---|

### Other

Other | 2012 IEEE International Symposium on Information Theory, ISIT 2012 |
---|---|

Country | United States |

City | Cambridge, MA |

Period | 7/1/12 → 7/6/12 |

### All Science Journal Classification (ASJC) codes

- Theoretical Computer Science
- Information Systems
- Modeling and Simulation
- Applied Mathematics

## Fingerprint Dive into the research topics of 'Generalized degrees of freedom of the symmetric K-user interference channel with feedback'. Together they form a unique fingerprint.

## Cite this

*2012 IEEE International Symposium on Information Theory Proceedings, ISIT 2012*(pp. 3125-3129). [6284139] (IEEE International Symposium on Information Theory - Proceedings). https://doi.org/10.1109/ISIT.2012.6284139