ARQ with Subcarrier Assignment for OFDM systems

C.K. Ho; Hongming Yang; A. Pandharipande; J.W.M. Bergmans

doi:10.1109/ACSSC.2007.4487527

ARQ with Subcarrier Assignment for OFDM systems

C.K. Ho, Hongming Yang, A. Pandharipande, J.W.M. Bergmans

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

Abstract

We consider an automatic-repeat-request (ARQ) scheme in OFDM systems. When a transmission fails, the transmitter repeats the data symbols in the retransmission, but on different subcarriers. The receiver then performs maximal- ratio combining (MRC) on the data symbols in the original and ARQ transmissions, before symbol detection is carried out. Our goal is to determine subcarrier assignment of the data symbols in the retransmission, such that utility functions which determine system-level performances are maximized. We show that when the utility function is Schur concave, the optimum solution is to assign the ARQ subcarrier with the largest SNR to the original subcarrier with the smallest SNR. Further, we propose heuristic solutions when some imposed constraints are relaxed.

Original language	English
Title of host publication	Conference Record of the Forty-first Asilomar Conference on Signals, Systems and Computers : November 4-7, 2007, Pacific Grove, California
Editors	M.B. Matthews
Place of Publication	Piscataway
Publisher	Institute of Electrical and Electronics Engineers
Pages	1723-1727
ISBN (Print)	978-1-4244-2109-1
DOIs	https://doi.org/10.1109/ACSSC.2007.4487527
Publication status	Published - 2007
Event	41st Asilomar Conference on Signals, Systems and Computers (ACSSC 2007) - Pacific Grove, United States Duration: 4 Nov 2007 → 7 Nov 2007 Conference number: 41

Conference

Conference	41st Asilomar Conference on Signals, Systems and Computers (ACSSC 2007)
Abbreviated title	ACSSC 2007
Country/Territory	United States
City	Pacific Grove
Period	4/11/07 → 7/11/07

Access to Document

10.1109/ACSSC.2007.4487527

Cite this

Ho, C. K., Yang, H., Pandharipande, A., & Bergmans, J. W. M. (2007). ARQ with Subcarrier Assignment for OFDM systems. In M. B. Matthews (Ed.), Conference Record of the Forty-first Asilomar Conference on Signals, Systems and Computers : November 4-7, 2007, Pacific Grove, California (pp. 1723-1727). Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/ACSSC.2007.4487527

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title = "ARQ with Subcarrier Assignment for OFDM systems",

abstract = "We consider an automatic-repeat-request (ARQ) scheme in OFDM systems. When a transmission fails, the transmitter repeats the data symbols in the retransmission, but on different subcarriers. The receiver then performs maximal- ratio combining (MRC) on the data symbols in the original and ARQ transmissions, before symbol detection is carried out. Our goal is to determine subcarrier assignment of the data symbols in the retransmission, such that utility functions which determine system-level performances are maximized. We show that when the utility function is Schur concave, the optimum solution is to assign the ARQ subcarrier with the largest SNR to the original subcarrier with the smallest SNR. Further, we propose heuristic solutions when some imposed constraints are relaxed.",

author = "C.K. Ho and Hongming Yang and A. Pandharipande and J.W.M. Bergmans",

year = "2007",

doi = "10.1109/ACSSC.2007.4487527",

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editor = "M.B. Matthews",

booktitle = "Conference Record of the Forty-first Asilomar Conference on Signals, Systems and Computers : November 4-7, 2007, Pacific Grove, California",

publisher = "Institute of Electrical and Electronics Engineers",

address = "United States",

note = "41st Asilomar Conference on Signals, Systems and Computers (ACSSC 2007), ACSSC 2007 ; Conference date: 04-11-2007 Through 07-11-2007",

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Ho, CK, Yang, H, Pandharipande, A & Bergmans, JWM 2007, ARQ with Subcarrier Assignment for OFDM systems. in MB Matthews (ed.), Conference Record of the Forty-first Asilomar Conference on Signals, Systems and Computers : November 4-7, 2007, Pacific Grove, California. Institute of Electrical and Electronics Engineers, Piscataway, pp. 1723-1727, 41st Asilomar Conference on Signals, Systems and Computers (ACSSC 2007), Pacific Grove, California, United States, 4/11/07. https://doi.org/10.1109/ACSSC.2007.4487527

ARQ with Subcarrier Assignment for OFDM systems. / Ho, C.K.; Yang, Hongming; Pandharipande, A. et al.
Conference Record of the Forty-first Asilomar Conference on Signals, Systems and Computers : November 4-7, 2007, Pacific Grove, California. ed. / M.B. Matthews. Piscataway: Institute of Electrical and Electronics Engineers, 2007. p. 1723-1727.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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AU - Bergmans, J.W.M.

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PY - 2007

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N2 - We consider an automatic-repeat-request (ARQ) scheme in OFDM systems. When a transmission fails, the transmitter repeats the data symbols in the retransmission, but on different subcarriers. The receiver then performs maximal- ratio combining (MRC) on the data symbols in the original and ARQ transmissions, before symbol detection is carried out. Our goal is to determine subcarrier assignment of the data symbols in the retransmission, such that utility functions which determine system-level performances are maximized. We show that when the utility function is Schur concave, the optimum solution is to assign the ARQ subcarrier with the largest SNR to the original subcarrier with the smallest SNR. Further, we propose heuristic solutions when some imposed constraints are relaxed.

AB - We consider an automatic-repeat-request (ARQ) scheme in OFDM systems. When a transmission fails, the transmitter repeats the data symbols in the retransmission, but on different subcarriers. The receiver then performs maximal- ratio combining (MRC) on the data symbols in the original and ARQ transmissions, before symbol detection is carried out. Our goal is to determine subcarrier assignment of the data symbols in the retransmission, such that utility functions which determine system-level performances are maximized. We show that when the utility function is Schur concave, the optimum solution is to assign the ARQ subcarrier with the largest SNR to the original subcarrier with the smallest SNR. Further, we propose heuristic solutions when some imposed constraints are relaxed.

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DO - 10.1109/ACSSC.2007.4487527

M3 - Conference contribution

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BT - Conference Record of the Forty-first Asilomar Conference on Signals, Systems and Computers : November 4-7, 2007, Pacific Grove, California

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Ho CK, Yang H, Pandharipande A , Bergmans JWM. ARQ with Subcarrier Assignment for OFDM systems. In Matthews MB, editor, Conference Record of the Forty-first Asilomar Conference on Signals, Systems and Computers : November 4-7, 2007, Pacific Grove, California. Piscataway: Institute of Electrical and Electronics Engineers. 2007. p. 1723-1727 doi: 10.1109/ACSSC.2007.4487527

ARQ with Subcarrier Assignment for OFDM systems

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