The "Z" Channel

Sriram Vishwanath; Nihar Jindal; Andrea Goldsmith

The "Z" Channel

Sriram Vishwanath
, Nihar Jindal
, Andrea Goldsmith

Stony Brook University

University of Texas at Austin
Stanford University

Research output: Contribution to conference › Paper › peer-review

42 Scopus citations

Abstract

We consider a two transmitter two receiver channel where independent data is sent on each communication link of the system. We consider a three-link system, termed the "Z" channel, in which one transmitter is connected to both receivers while the other transmitter is only connected to one of the receivers. Thus, the "Z" channel has a three dimensional capacity region. We characterize the capacity region of a special class of degraded "Z" channels and establish an achievable region for the Gaussian "Z" channels. Finally, we use genie-aided techniques previously used for the interference and broadcast channels to obtain an outer bound for general "Z" channels.

Original language	English
Pages	1726-1730
Number of pages	5
State	Published - 2003
Event	IEEE Global Telecommunications Conference GLOBECOM'03 - San Francisco, CA, United States Duration: Dec 1 2003 → Dec 5 2003

Conference

Conference	IEEE Global Telecommunications Conference GLOBECOM'03
Country/Territory	United States
City	San Francisco, CA
Period	12/1/03 → 12/5/03

Cite this

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title = "The {"}Z{"} Channel",

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T1 - The "Z" Channel

AU - Vishwanath, Sriram

AU - Jindal, Nihar

AU - Goldsmith, Andrea

PY - 2003

Y1 - 2003

N2 - We consider a two transmitter two receiver channel where independent data is sent on each communication link of the system. We consider a three-link system, termed the "Z" channel, in which one transmitter is connected to both receivers while the other transmitter is only connected to one of the receivers. Thus, the "Z" channel has a three dimensional capacity region. We characterize the capacity region of a special class of degraded "Z" channels and establish an achievable region for the Gaussian "Z" channels. Finally, we use genie-aided techniques previously used for the interference and broadcast channels to obtain an outer bound for general "Z" channels.

AB - We consider a two transmitter two receiver channel where independent data is sent on each communication link of the system. We consider a three-link system, termed the "Z" channel, in which one transmitter is connected to both receivers while the other transmitter is only connected to one of the receivers. Thus, the "Z" channel has a three dimensional capacity region. We characterize the capacity region of a special class of degraded "Z" channels and establish an achievable region for the Gaussian "Z" channels. Finally, we use genie-aided techniques previously used for the interference and broadcast channels to obtain an outer bound for general "Z" channels.

UR - https://www.scopus.com/pages/publications/0842289219

M3 - Paper

AN - SCOPUS:0842289219

SP - 1726

EP - 1730

T2 - IEEE Global Telecommunications Conference GLOBECOM'03

Y2 - 1 December 2003 through 5 December 2003

ER -

The "Z" Channel

Abstract

Conference

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