Work

Interference Channels with Half-Duplex Source Cooperation

Year: 2014

Type: preprint

Abstract: The performance gain by allowing half-duplex source cooperation is studied for Gaussian interference channels. The source cooperation is {\em in-band}, meaning that each source can listen to the other source's transmission, but there is no independent (or orthogonal) channel between the sources. The half-duplex constraint supposes that at each time instant the sources can either transmit or listen, but not do both. Our main result is a characterization of the sum capacity when the cooperation is bidirectional and the channel gains are symmetric. With unidirectional cooperation, we essentially have a cognitive radio channel. By requiring the primary to achieve a rate close to its link capacity, the best possible rate for the secondary is characterized within a constant. Novel inner and outer bounds are derived as part of these characterizations.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.1402.0898

Authors: Wu, Rui, Prabhakaran, Vinod, Viswanath, Pramod, Wang, Yi

Institutions: University of Illinois Urbana-Champaign, Tata Institute of Fundamental Research, Huawei Technologies (China)

Language: English

Topic: Cooperative Communication and Network Coding

Subfield: Computer Networks and Communications

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, Division of Electrical, Communications and Cyber Systems

Awards: CIF: Small: Cooperative Interference Management-A Fundamental Study, Collaborative Research: Snowflake: Lightweight and Adaptive Communications for Dense Sensor Networks

OpenAlex ID: W2951782240

Cites:

Cited by: 2

Related to: 10