Wireless Information and Energy Transfer for Two-Hop Non-Regenerative MIMO-OFDM Relay Networks

Ke Xiong, Pingyi Fan, Chuang Zhang, Khaled Letaief

Research output: Contribution to journalArticle

133 Citations (Scopus)

Abstract

This paper investigates the simultaneous wireless information and energy transfer for the non-regenerative multiple-input multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) relaying system. By considering two practical receiver architectures, we present two protocols, time switching-based relaying (TSR) and power splitting-based relaying (PSR). To explore the system performance limits, we formulate two optimization problems to maximize the end-to-end achievable information rate with the full channel state information (CSI) assumption. Since both problems are non-convex and have no known solution method, we firstly derive some explicit results by theoretical analysis and then design effective algorithms for them. Numerical results show that the performances of both protocols are greatly affected by the relay position. Specifically, PSR and TSR show very different behaviors to the variation of relay position. The achievable information rate of PSR monotonically decreases when the relay moves from the source towards the destination, but for TSR, the performance is relatively worse when the relay is placed in the middle of the source and the destination. This is the first time such a phenomenon has been observed. In addition, it is also shown that PSR always outperforms TSR in such a MIMO-OFDM relaying system. Moreover, the effects of the number of antennas and the number of subcarriers are also discussed.

Original languageEnglish
Article number7008436
Pages (from-to)1595-1611
Number of pages17
JournalIEEE Journal on Selected Areas in Communications
Volume33
Issue number8
DOIs
Publication statusPublished - 1 Aug 2015
Externally publishedYes

Fingerprint

Energy transfer
Orthogonal frequency division multiplexing
Channel state information
Antennas

Keywords

  • Energy harvesting
  • MIMO-OFDM
  • non-regenerative relaying
  • simultaneous wireless information and power transfer
  • wireless power transfer

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

Cite this

Wireless Information and Energy Transfer for Two-Hop Non-Regenerative MIMO-OFDM Relay Networks. / Xiong, Ke; Fan, Pingyi; Zhang, Chuang; Letaief, Khaled.

In: IEEE Journal on Selected Areas in Communications, Vol. 33, No. 8, 7008436, 01.08.2015, p. 1595-1611.

Research output: Contribution to journalArticle

@article{b4a723a6313a41fd919c4fc9fc155ce7,
title = "Wireless Information and Energy Transfer for Two-Hop Non-Regenerative MIMO-OFDM Relay Networks",
abstract = "This paper investigates the simultaneous wireless information and energy transfer for the non-regenerative multiple-input multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) relaying system. By considering two practical receiver architectures, we present two protocols, time switching-based relaying (TSR) and power splitting-based relaying (PSR). To explore the system performance limits, we formulate two optimization problems to maximize the end-to-end achievable information rate with the full channel state information (CSI) assumption. Since both problems are non-convex and have no known solution method, we firstly derive some explicit results by theoretical analysis and then design effective algorithms for them. Numerical results show that the performances of both protocols are greatly affected by the relay position. Specifically, PSR and TSR show very different behaviors to the variation of relay position. The achievable information rate of PSR monotonically decreases when the relay moves from the source towards the destination, but for TSR, the performance is relatively worse when the relay is placed in the middle of the source and the destination. This is the first time such a phenomenon has been observed. In addition, it is also shown that PSR always outperforms TSR in such a MIMO-OFDM relaying system. Moreover, the effects of the number of antennas and the number of subcarriers are also discussed.",
keywords = "Energy harvesting, MIMO-OFDM, non-regenerative relaying, simultaneous wireless information and power transfer, wireless power transfer",
author = "Ke Xiong and Pingyi Fan and Chuang Zhang and Khaled Letaief",
year = "2015",
month = "8",
day = "1",
doi = "10.1109/JSAC.2015.2391931",
language = "English",
volume = "33",
pages = "1595--1611",
journal = "IEEE Journal on Selected Areas in Communications",
issn = "0733-8716",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "8",

}

TY - JOUR

T1 - Wireless Information and Energy Transfer for Two-Hop Non-Regenerative MIMO-OFDM Relay Networks

AU - Xiong, Ke

AU - Fan, Pingyi

AU - Zhang, Chuang

AU - Letaief, Khaled

PY - 2015/8/1

Y1 - 2015/8/1

N2 - This paper investigates the simultaneous wireless information and energy transfer for the non-regenerative multiple-input multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) relaying system. By considering two practical receiver architectures, we present two protocols, time switching-based relaying (TSR) and power splitting-based relaying (PSR). To explore the system performance limits, we formulate two optimization problems to maximize the end-to-end achievable information rate with the full channel state information (CSI) assumption. Since both problems are non-convex and have no known solution method, we firstly derive some explicit results by theoretical analysis and then design effective algorithms for them. Numerical results show that the performances of both protocols are greatly affected by the relay position. Specifically, PSR and TSR show very different behaviors to the variation of relay position. The achievable information rate of PSR monotonically decreases when the relay moves from the source towards the destination, but for TSR, the performance is relatively worse when the relay is placed in the middle of the source and the destination. This is the first time such a phenomenon has been observed. In addition, it is also shown that PSR always outperforms TSR in such a MIMO-OFDM relaying system. Moreover, the effects of the number of antennas and the number of subcarriers are also discussed.

AB - This paper investigates the simultaneous wireless information and energy transfer for the non-regenerative multiple-input multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) relaying system. By considering two practical receiver architectures, we present two protocols, time switching-based relaying (TSR) and power splitting-based relaying (PSR). To explore the system performance limits, we formulate two optimization problems to maximize the end-to-end achievable information rate with the full channel state information (CSI) assumption. Since both problems are non-convex and have no known solution method, we firstly derive some explicit results by theoretical analysis and then design effective algorithms for them. Numerical results show that the performances of both protocols are greatly affected by the relay position. Specifically, PSR and TSR show very different behaviors to the variation of relay position. The achievable information rate of PSR monotonically decreases when the relay moves from the source towards the destination, but for TSR, the performance is relatively worse when the relay is placed in the middle of the source and the destination. This is the first time such a phenomenon has been observed. In addition, it is also shown that PSR always outperforms TSR in such a MIMO-OFDM relaying system. Moreover, the effects of the number of antennas and the number of subcarriers are also discussed.

KW - Energy harvesting

KW - MIMO-OFDM

KW - non-regenerative relaying

KW - simultaneous wireless information and power transfer

KW - wireless power transfer

UR - http://www.scopus.com/inward/record.url?scp=84924193183&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84924193183&partnerID=8YFLogxK

U2 - 10.1109/JSAC.2015.2391931

DO - 10.1109/JSAC.2015.2391931

M3 - Article

AN - SCOPUS:84924193183

VL - 33

SP - 1595

EP - 1611

JO - IEEE Journal on Selected Areas in Communications

JF - IEEE Journal on Selected Areas in Communications

SN - 0733-8716

IS - 8

M1 - 7008436

ER -