Ergodic capacity and power allocation in wireless relay channels

Anders Høst-Madsen; Junshan Zhang

Ergodic capacity and power allocation in wireless relay channels

Anders Høst-Madsen, Junshan Zhang

Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

6 Scopus citations

Abstract

This paper studies the ergodic capacity and power allocation for a three-node relay channel over Rayleigh fading. Assuming perfect channel side information (CSI) at the transmitters and the receivers, we find the upper bounds and lower bounds on the capacity by solving generalized "water-filling" power allocation problems. Our results reveal that the optimum relay channel signaling can significantly outperform direct transmissions and traditional multi-hop transmissions. We also characterize the power gain of using the optimum signaling in the high SNR regime and find the corresponding power allocation policies.

Original language	English (US)
Title of host publication	GLOBECOM - IEEE Global Telecommunications Conference
Pages	26-30
Number of pages	5
Volume	1
State	Published - 2004
Event	GLOBECOM'04 - IEEE Global Telecommunications Conference - Dallas, TX, United States Duration: Nov 29 2004 → Dec 3 2004

Other

Other	GLOBECOM'04 - IEEE Global Telecommunications Conference
Country/Territory	United States
City	Dallas, TX
Period	11/29/04 → 12/3/04

ASJC Scopus subject areas

Engineering(all)

Cite this

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title = "Ergodic capacity and power allocation in wireless relay channels",

abstract = "This paper studies the ergodic capacity and power allocation for a three-node relay channel over Rayleigh fading. Assuming perfect channel side information (CSI) at the transmitters and the receivers, we find the upper bounds and lower bounds on the capacity by solving generalized {"}water-filling{"} power allocation problems. Our results reveal that the optimum relay channel signaling can significantly outperform direct transmissions and traditional multi-hop transmissions. We also characterize the power gain of using the optimum signaling in the high SNR regime and find the corresponding power allocation policies.",

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year = "2004",

language = "English (US)",

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T1 - Ergodic capacity and power allocation in wireless relay channels

AU - Høst-Madsen, Anders

AU - Zhang, Junshan

PY - 2004

Y1 - 2004

N2 - This paper studies the ergodic capacity and power allocation for a three-node relay channel over Rayleigh fading. Assuming perfect channel side information (CSI) at the transmitters and the receivers, we find the upper bounds and lower bounds on the capacity by solving generalized "water-filling" power allocation problems. Our results reveal that the optimum relay channel signaling can significantly outperform direct transmissions and traditional multi-hop transmissions. We also characterize the power gain of using the optimum signaling in the high SNR regime and find the corresponding power allocation policies.

AB - This paper studies the ergodic capacity and power allocation for a three-node relay channel over Rayleigh fading. Assuming perfect channel side information (CSI) at the transmitters and the receivers, we find the upper bounds and lower bounds on the capacity by solving generalized "water-filling" power allocation problems. Our results reveal that the optimum relay channel signaling can significantly outperform direct transmissions and traditional multi-hop transmissions. We also characterize the power gain of using the optimum signaling in the high SNR regime and find the corresponding power allocation policies.

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M3 - Conference contribution

AN - SCOPUS:18144377060

VL - 1

SP - 26

EP - 30

BT - GLOBECOM - IEEE Global Telecommunications Conference

T2 - GLOBECOM'04 - IEEE Global Telecommunications Conference

Y2 - 29 November 2004 through 3 December 2004

ER -

Ergodic capacity and power allocation in wireless relay channels

Abstract

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ASJC Scopus subject areas

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