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

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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.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2010-09
Language
English
Article Type
Article
Keywords

COGNITIVE RADIO CHANNELS; SUM CAPACITY; REGION

Citation

IEEE COMMUNICATIONS LETTERS, v.14, no.9, pp.821 - 823

ISSN
1089-7798
DOI
10.1109/LCOMM.2010.072610.100041
URI
http://hdl.handle.net/10203/94553
Appears in Collection
EE-Journal Papers(저널논문)
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