Energy-aware subchannel assignment in OFDMA system with proportional rate constraints

Su Fong Chien; Mau Luen Tham; Tiew On Ting; Kyeong Soo Kim

doi:10.1109/WOCC.2015.7346195

Energy-aware subchannel assignment in OFDMA system with proportional rate constraints

Su Fong Chien
, Mau Luen Tham
, Tiew On Ting
, Kyeong Soo Kim

MIMOS

Research output: Chapter in Book or Report/Conference proceeding › Conference Proceeding › peer-review

2 Citations (Scopus)

Abstract

We propose a new subchannel assignment algorithm for the problem of energy-efficient allocation of subchannels and powers to users for a single-cell OFDMA downlink transmission. It is well known that the joint allocation of subchannels and power for maximizing the energy efficiency of transmission is time-consuming due to the non-convexity of the objective function. Recently, the problem of energy-efficient resource allocation OFDMA-based downlink transmission has been formulated as a two-step allocation process: the first step for subchannel assignment and the second step for power allocation. This paper proposes a low-complexity suboptimal algorithm for assigning subchannels. Applying the Charnes-Cooper Transformation technique and by using the outcome of the proposed subchannel assignment algorithm, we are able to allocate optimum power for each user by solving a single-variable non-linear equation under proportional rate constraints. Numerical results demonstrate that the proposed subchannel assignment algorithm improves both energy and spectral efficiencies compared to the existing ones in the literature.

Original language	English
Title of host publication	2015 24th Wireless and Optical Communication Conference, WOCC 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	149-153
Number of pages	5
ISBN (Electronic)	9781479988549
DOIs	https://doi.org/10.1109/WOCC.2015.7346195
Publication status	Published - 2 Dec 2015
Event	24th Wireless and Optical Communication Conference, WOCC 2015 - Taipei, Taiwan, Province of China Duration: 23 Oct 2015 → 24 Oct 2015

Publication series

Name	2015 24th Wireless and Optical Communication Conference, WOCC 2015

Conference

Conference	24th Wireless and Optical Communication Conference, WOCC 2015
Country/Territory	Taiwan, Province of China
City	Taipei
Period	23/10/15 → 24/10/15

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Access to Document

10.1109/WOCC.2015.7346195

Cite this

Chien, S. F., Tham, M. L., Ting, T. O., & Kim, K. S. (2015). Energy-aware subchannel assignment in OFDMA system with proportional rate constraints. In 2015 24th Wireless and Optical Communication Conference, WOCC 2015 (pp. 149-153). Article 7346195 (2015 24th Wireless and Optical Communication Conference, WOCC 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/WOCC.2015.7346195

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title = "Energy-aware subchannel assignment in OFDMA system with proportional rate constraints",

abstract = "We propose a new subchannel assignment algorithm for the problem of energy-efficient allocation of subchannels and powers to users for a single-cell OFDMA downlink transmission. It is well known that the joint allocation of subchannels and power for maximizing the energy efficiency of transmission is time-consuming due to the non-convexity of the objective function. Recently, the problem of energy-efficient resource allocation OFDMA-based downlink transmission has been formulated as a two-step allocation process: the first step for subchannel assignment and the second step for power allocation. This paper proposes a low-complexity suboptimal algorithm for assigning subchannels. Applying the Charnes-Cooper Transformation technique and by using the outcome of the proposed subchannel assignment algorithm, we are able to allocate optimum power for each user by solving a single-variable non-linear equation under proportional rate constraints. Numerical results demonstrate that the proposed subchannel assignment algorithm improves both energy and spectral efficiencies compared to the existing ones in the literature.",

author = "Chien, \{Su Fong\} and Tham, \{Mau Luen\} and Ting, \{Tiew On\} and Kim, \{Kyeong Soo\}",

note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; 24th Wireless and Optical Communication Conference, WOCC 2015 ; Conference date: 23-10-2015 Through 24-10-2015",

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Chien, SF, Tham, ML, Ting, TO & Kim, KS 2015, Energy-aware subchannel assignment in OFDMA system with proportional rate constraints. in 2015 24th Wireless and Optical Communication Conference, WOCC 2015., 7346195, 2015 24th Wireless and Optical Communication Conference, WOCC 2015, Institute of Electrical and Electronics Engineers Inc., pp. 149-153, 24th Wireless and Optical Communication Conference, WOCC 2015, Taipei, Taiwan, Province of China, 23/10/15. https://doi.org/10.1109/WOCC.2015.7346195

Energy-aware subchannel assignment in OFDMA system with proportional rate constraints. / Chien, Su Fong; Tham, Mau Luen; Ting, Tiew On et al.
2015 24th Wireless and Optical Communication Conference, WOCC 2015. Institute of Electrical and Electronics Engineers Inc., 2015. p. 149-153 7346195 (2015 24th Wireless and Optical Communication Conference, WOCC 2015).

Research output: Chapter in Book or Report/Conference proceeding › Conference Proceeding › peer-review

TY - GEN

T1 - Energy-aware subchannel assignment in OFDMA system with proportional rate constraints

AU - Chien, Su Fong

AU - Tham, Mau Luen

AU - Ting, Tiew On

AU - Kim, Kyeong Soo

PY - 2015/12/2

Y1 - 2015/12/2

N2 - We propose a new subchannel assignment algorithm for the problem of energy-efficient allocation of subchannels and powers to users for a single-cell OFDMA downlink transmission. It is well known that the joint allocation of subchannels and power for maximizing the energy efficiency of transmission is time-consuming due to the non-convexity of the objective function. Recently, the problem of energy-efficient resource allocation OFDMA-based downlink transmission has been formulated as a two-step allocation process: the first step for subchannel assignment and the second step for power allocation. This paper proposes a low-complexity suboptimal algorithm for assigning subchannels. Applying the Charnes-Cooper Transformation technique and by using the outcome of the proposed subchannel assignment algorithm, we are able to allocate optimum power for each user by solving a single-variable non-linear equation under proportional rate constraints. Numerical results demonstrate that the proposed subchannel assignment algorithm improves both energy and spectral efficiencies compared to the existing ones in the literature.

AB - We propose a new subchannel assignment algorithm for the problem of energy-efficient allocation of subchannels and powers to users for a single-cell OFDMA downlink transmission. It is well known that the joint allocation of subchannels and power for maximizing the energy efficiency of transmission is time-consuming due to the non-convexity of the objective function. Recently, the problem of energy-efficient resource allocation OFDMA-based downlink transmission has been formulated as a two-step allocation process: the first step for subchannel assignment and the second step for power allocation. This paper proposes a low-complexity suboptimal algorithm for assigning subchannels. Applying the Charnes-Cooper Transformation technique and by using the outcome of the proposed subchannel assignment algorithm, we are able to allocate optimum power for each user by solving a single-variable non-linear equation under proportional rate constraints. Numerical results demonstrate that the proposed subchannel assignment algorithm improves both energy and spectral efficiencies compared to the existing ones in the literature.

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M3 - Conference Proceeding

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T3 - 2015 24th Wireless and Optical Communication Conference, WOCC 2015

SP - 149

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BT - 2015 24th Wireless and Optical Communication Conference, WOCC 2015

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 24th Wireless and Optical Communication Conference, WOCC 2015

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ER -

Chien SF, Tham ML, Ting TO, Kim KS. Energy-aware subchannel assignment in OFDMA system with proportional rate constraints. In 2015 24th Wireless and Optical Communication Conference, WOCC 2015. Institute of Electrical and Electronics Engineers Inc. 2015. p. 149-153. 7346195. (2015 24th Wireless and Optical Communication Conference, WOCC 2015). doi: 10.1109/WOCC.2015.7346195

Energy-aware subchannel assignment in OFDMA system with proportional rate constraints

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