Capacity bounds and power allocation for wireless relay channels

Anders Høost-Madsen; Junshan Zhang

doi:10.1109/TIT.2005.847703

Capacity bounds and power allocation for wireless relay channels

Anders Høost-Madsen, Junshan Zhang

Electrical Engineering

Research output: Contribution to journal › Article › peer-review

950 Scopus citations

Abstract

We consider three-node wireless relay channels in a Rayleigh-fading environment. Assuming transmitter channel state information (CSI), we study upper bounds and lower bounds on the outage capacity and the ergodic capacity. Our studies take into account practical constraints on the transmission/reception duplexing at the relay node and on the synchronization between the source node and the relay node. We also explore power allocation. Compared to the direct transmission and traditional multihop protocols, our results reveal that optimum relay channel signaling can significantly outperform multihop protocols, and that power allocation has a significant impact on the performance.

Original language	English (US)
Pages (from-to)	2020-2040
Number of pages	21
Journal	IEEE Transactions on Information Theory
Volume	51
Issue number	6
DOIs	https://doi.org/10.1109/TIT.2005.847703
State	Published - Jun 2005

Keywords

Channel capacity
Cooperative diversity
Ergodic capacity
Power allocation
Relay channel
Wireless networks

ASJC Scopus subject areas

Information Systems
Computer Science Applications
Library and Information Sciences

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10.1109/TIT.2005.847703

Cite this

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abstract = "We consider three-node wireless relay channels in a Rayleigh-fading environment. Assuming transmitter channel state information (CSI), we study upper bounds and lower bounds on the outage capacity and the ergodic capacity. Our studies take into account practical constraints on the transmission/reception duplexing at the relay node and on the synchronization between the source node and the relay node. We also explore power allocation. Compared to the direct transmission and traditional multihop protocols, our results reveal that optimum relay channel signaling can significantly outperform multihop protocols, and that power allocation has a significant impact on the performance.",

keywords = "Channel capacity, Cooperative diversity, Ergodic capacity, Power allocation, Relay channel, Wireless networks",

author = "Anders H{\o}ost-Madsen and Junshan Zhang",

note = "Funding Information: Manuscript received September 20, 2003; revised February 1, 2005. The work of A. H{\o}st-Madsen was supported in part by the National Science Foundation under Grant CCR-0329908. The work of J. Zhang was supported in part by the National Science Foundation under Grant ANI-0208135 and a grant from the Intel Research Council. A. H{\o}st-Madsen is with the Department of Electrical Engineering, University of Hawaii at Manoa, Honolulu, HI 96813 USA (e-mail: madsen@spectra. eng.hawaii.edu). J. Zhang is with Department of Electrical Engineering, Arizona State University, Tempe, AZ 85287 USA (e-mail: junshan.zhang@asu.edu). Communicated by G. Caire, Associate Editor for Communications. Digital Object Identifier 10.1109/TIT.2005.847703",

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AU - Høost-Madsen, Anders

AU - Zhang, Junshan

N1 - Funding Information: Manuscript received September 20, 2003; revised February 1, 2005. The work of A. Høst-Madsen was supported in part by the National Science Foundation under Grant CCR-0329908. The work of J. Zhang was supported in part by the National Science Foundation under Grant ANI-0208135 and a grant from the Intel Research Council. A. Høst-Madsen is with the Department of Electrical Engineering, University of Hawaii at Manoa, Honolulu, HI 96813 USA (e-mail: madsen@spectra. eng.hawaii.edu). J. Zhang is with Department of Electrical Engineering, Arizona State University, Tempe, AZ 85287 USA (e-mail: junshan.zhang@asu.edu). Communicated by G. Caire, Associate Editor for Communications. Digital Object Identifier 10.1109/TIT.2005.847703

PY - 2005/6

Y1 - 2005/6

N2 - We consider three-node wireless relay channels in a Rayleigh-fading environment. Assuming transmitter channel state information (CSI), we study upper bounds and lower bounds on the outage capacity and the ergodic capacity. Our studies take into account practical constraints on the transmission/reception duplexing at the relay node and on the synchronization between the source node and the relay node. We also explore power allocation. Compared to the direct transmission and traditional multihop protocols, our results reveal that optimum relay channel signaling can significantly outperform multihop protocols, and that power allocation has a significant impact on the performance.

AB - We consider three-node wireless relay channels in a Rayleigh-fading environment. Assuming transmitter channel state information (CSI), we study upper bounds and lower bounds on the outage capacity and the ergodic capacity. Our studies take into account practical constraints on the transmission/reception duplexing at the relay node and on the synchronization between the source node and the relay node. We also explore power allocation. Compared to the direct transmission and traditional multihop protocols, our results reveal that optimum relay channel signaling can significantly outperform multihop protocols, and that power allocation has a significant impact on the performance.

KW - Channel capacity

KW - Cooperative diversity

KW - Ergodic capacity

KW - Power allocation

KW - Relay channel

KW - Wireless networks

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JO - IEEE Transactions on Information Theory

JF - IEEE Transactions on Information Theory

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Capacity bounds and power allocation for wireless relay channels

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Keywords

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