Rate Enhancement for the Gaussian Z-Interference Channel with Transmitter Cooperation

Author

Seo, Dae-Won ; Jeon, Sang-Woon ; Chung, Sae-Young ; Kim, Junmo

Author_Institution

Dept. of Electr. Eng., KAIST, Daejeon, South Korea

Volume

14

Issue

9

fYear

2010

fDate

9/1/2010 12:00:00 AM

Firstpage

821

Lastpage

823

Abstract

We study a two-user Gaussian Z-interference channel in which only one-sided interference exists. We assume that there is a one-sided conferencing link from the interfering transmitter to the other, which can be used to mitigate the interference. We propose a cooperative transmission scheme that delivers a part of the interfering message through the conferencing link and then applies the dirty paper coding by regarding the delivered message as a known transmit side information. We characterize its achievable rate region for general channel coefficients and show that a finite-rate conferencing can improve both achievable rate region and its sum rate.

Keywords

Gaussian channels; encoding; interference suppression; radio transmitters; cooperative transmission scheme; dirty paper coding; finite-rate conferencing; general channel coefficients; interference mitigation; one-sided conferencing link; rate enhancement; transmit side information; two-user Gaussian Z-interference channel; Ad hoc networks; Base stations; Cognitive radio; Communication networks; Decoding; Encoding; Interference channels; Land mobile radio cellular systems; Next generation networking; Radio transmitters; Research and development; Sensor systems; Dirty paper coding; Z-interference channel; finite-rate conferencing; transmitter cooperation;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2010.072610.100041

Filename

5535253