### Abstract

A K-user cascade Gaussian Z-interference channel is a subclass of the general K-user Gaussian interference channel, where each user, except the first one, experiences interference only from the previous user. Under simple Han-Kobayashi schemes assuming Gaussian inputs and no time sharing, it is shown that the maximum sum rate is achieved by each user transmitting either common or private signals. For K = 3, channel conditions under which the achieved sum rate is either equal to or within 0.5 bits to the sum capacity are identified.

Original language | English (US) |
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Title of host publication | 2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011 |

Pages | 1382-1386 |

Number of pages | 5 |

DOIs | |

State | Published - 2011 |

Event | 2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011 - St. Petersburg, Russian Federation Duration: Jul 31 2011 → Aug 5 2011 |

### Other

Other | 2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011 |
---|---|

Country | Russian Federation |

City | St. Petersburg |

Period | 7/31/11 → 8/5/11 |

### Fingerprint

### ASJC Scopus subject areas

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

### Cite this

*2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011*(pp. 1382-1386). [6033765] https://doi.org/10.1109/ISIT.2011.6033765

**On the sum capacity of K-user cascade Gaussian Z-interference channel.** / Liu, Yuanpeng; Erkip, Elza.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

*2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011.*, 6033765, pp. 1382-1386, 2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011, St. Petersburg, Russian Federation, 7/31/11. https://doi.org/10.1109/ISIT.2011.6033765

}

TY - GEN

T1 - On the sum capacity of K-user cascade Gaussian Z-interference channel

AU - Liu, Yuanpeng

AU - Erkip, Elza

PY - 2011

Y1 - 2011

N2 - A K-user cascade Gaussian Z-interference channel is a subclass of the general K-user Gaussian interference channel, where each user, except the first one, experiences interference only from the previous user. Under simple Han-Kobayashi schemes assuming Gaussian inputs and no time sharing, it is shown that the maximum sum rate is achieved by each user transmitting either common or private signals. For K = 3, channel conditions under which the achieved sum rate is either equal to or within 0.5 bits to the sum capacity are identified.

AB - A K-user cascade Gaussian Z-interference channel is a subclass of the general K-user Gaussian interference channel, where each user, except the first one, experiences interference only from the previous user. Under simple Han-Kobayashi schemes assuming Gaussian inputs and no time sharing, it is shown that the maximum sum rate is achieved by each user transmitting either common or private signals. For K = 3, channel conditions under which the achieved sum rate is either equal to or within 0.5 bits to the sum capacity are identified.

UR - http://www.scopus.com/inward/record.url?scp=80054818744&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80054818744&partnerID=8YFLogxK

U2 - 10.1109/ISIT.2011.6033765

DO - 10.1109/ISIT.2011.6033765

M3 - Conference contribution

SN - 9781457705953

SP - 1382

EP - 1386

BT - 2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011

ER -