Author :
Vishwanath, Sriram ; Jindal, Nihar ; Goldsmith, Andrea
Author_Institution :
Dept. of Elec. & Comput. Engg., Texas Univ., Austin, TX, USA
Abstract :
A two transmitter two receiver channel where independent data is sent on each communication link of the system is considered. 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.
Keywords :
Gaussian channels; ad hoc networks; radio links; telecommunication channels; Gaussian Z channel; communication link; genie-aided technique; three dimensional capacity region; three-link system; two transmitter two receiver channel;
Conference_Titel :
Global Telecommunications Conference, 2003. GLOBECOM '03. IEEE
Print_ISBN :
0-7803-7974-8
DOI :
10.1109/GLOCOM.2003.1258532
