A joint feedback reduction scheme using delta modulation for dynamic channel allocation in OFDMA systems

Myeon Gyun Cho; Woohyun Seo; Daesik Hong

doi:10.1109/TWC.2007.05107

A joint feedback reduction scheme using delta modulation for dynamic channel allocation in OFDMA systems

Myeon Gyun Cho, Woohyun Seo, Daesik Hong

Department of Electrical and Electronic Engineering

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

6 Citations (Scopus)

Abstract

A novel feedback-reduction scheme is proposed for dynamic channel allocation (DCA) in OFDMA systems. Applying this delta-modulation (DM)-based scheme to the channel gain of adjacent subcarriers reduces the feedback information to 1 bit per subcarrier. Since this reduced feedback information can lead to performance degradation in a bit error rate (BER), a modified amplitude craving greedy (ACG) method and improved DM are jointly adopted to minimize the loss. Simulation results verify that the proposed scheme can decrease feedback information by a factor of 1/M while retaining performance comparable to the full feedback case, which requires M bits per subcarrier.

Original language	English
Pages (from-to)	46-49
Number of pages	4
Journal	IEEE Transactions on Wireless Communications
Volume	6
Issue number	1
DOIs	https://doi.org/10.1109/TWC.2007.05107
Publication status	Published - 2007 Jan

Bibliographical note

Funding Information:
This work was supported in part by the Ministry of Education and Human Resources Development(MOE), the Ministry of Commerce, Industry and Energy(MOCIE) and the Ministry of Labor(MOLAB) through the fostering project of the Lab of Excellency.

All Science Journal Classification (ASJC) codes

Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

Access to Document

10.1109/TWC.2007.05107

Cite this

@article{25dff3b186814b7fb0fc6a0f65b064ad,

title = "A joint feedback reduction scheme using delta modulation for dynamic channel allocation in OFDMA systems",

abstract = "A novel feedback-reduction scheme is proposed for dynamic channel allocation (DCA) in OFDMA systems. Applying this delta-modulation (DM)-based scheme to the channel gain of adjacent subcarriers reduces the feedback information to 1 bit per subcarrier. Since this reduced feedback information can lead to performance degradation in a bit error rate (BER), a modified amplitude craving greedy (ACG) method and improved DM are jointly adopted to minimize the loss. Simulation results verify that the proposed scheme can decrease feedback information by a factor of 1/M while retaining performance comparable to the full feedback case, which requires M bits per subcarrier.",

author = "Cho, {Myeon Gyun} and Woohyun Seo and Daesik Hong",

note = "Funding Information: This work was supported in part by the Ministry of Education and Human Resources Development(MOE), the Ministry of Commerce, Industry and Energy(MOCIE) and the Ministry of Labor(MOLAB) through the fostering project of the Lab of Excellency.",

year = "2007",

month = jan,

doi = "10.1109/TWC.2007.05107",

language = "English",

volume = "6",

pages = "46--49",

journal = "IEEE Transactions on Wireless Communications",

issn = "1536-1276",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "1",

}

TY - JOUR

T1 - A joint feedback reduction scheme using delta modulation for dynamic channel allocation in OFDMA systems

AU - Cho, Myeon Gyun

AU - Seo, Woohyun

AU - Hong, Daesik

N1 - Funding Information: This work was supported in part by the Ministry of Education and Human Resources Development(MOE), the Ministry of Commerce, Industry and Energy(MOCIE) and the Ministry of Labor(MOLAB) through the fostering project of the Lab of Excellency.

PY - 2007/1

Y1 - 2007/1

N2 - A novel feedback-reduction scheme is proposed for dynamic channel allocation (DCA) in OFDMA systems. Applying this delta-modulation (DM)-based scheme to the channel gain of adjacent subcarriers reduces the feedback information to 1 bit per subcarrier. Since this reduced feedback information can lead to performance degradation in a bit error rate (BER), a modified amplitude craving greedy (ACG) method and improved DM are jointly adopted to minimize the loss. Simulation results verify that the proposed scheme can decrease feedback information by a factor of 1/M while retaining performance comparable to the full feedback case, which requires M bits per subcarrier.

AB - A novel feedback-reduction scheme is proposed for dynamic channel allocation (DCA) in OFDMA systems. Applying this delta-modulation (DM)-based scheme to the channel gain of adjacent subcarriers reduces the feedback information to 1 bit per subcarrier. Since this reduced feedback information can lead to performance degradation in a bit error rate (BER), a modified amplitude craving greedy (ACG) method and improved DM are jointly adopted to minimize the loss. Simulation results verify that the proposed scheme can decrease feedback information by a factor of 1/M while retaining performance comparable to the full feedback case, which requires M bits per subcarrier.

UR - http://www.scopus.com/inward/record.url?scp=33947578453&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33947578453&partnerID=8YFLogxK

U2 - 10.1109/TWC.2007.05107

DO - 10.1109/TWC.2007.05107

M3 - Article

AN - SCOPUS:33947578453

SN - 1536-1276

VL - 6

SP - 46

EP - 49

JO - IEEE Transactions on Wireless Communications

JF - IEEE Transactions on Wireless Communications

IS - 1

ER -

A joint feedback reduction scheme using delta modulation for dynamic channel allocation in OFDMA systems

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this