An efficient bit loading algorithm for OFDM-based wireless LAN systems and hardware implementation results

Huiyun Kang; Byungjik Son; Yunho Jung; Junghyuck Lee; Jaeseok Kim

doi:10.1109/ICASIC.2003.1277393

An efficient bit loading algorithm for OFDM-based wireless LAN systems and hardware implementation results

Huiyun Kang, Byungjik Son, Yunho Jung, Junghyuck Lee, Jaeseok Kim

Department of Electrical and Electronic Engineering

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

1 Citation (Scopus)

Abstract

In this paper, we propose an efficient bit loading algorithm for IEEE 802.11a wireless LAN systems. A conventional bit loading algorithm uses the SNR value of each subcarrier. However, it is very difficult to estimate the exact SNR value in wireless LAN systems due to the randomness of AWGN. Therefore, the proposed algorithm uses the channel frequency response instead of the SNR value of each subcarrier. From 54Mbps simulation, we can obtain the performance gain of 6.5dB at PER of 10"² with the proposed algorithm, whereas the conventional one obtains that of 5dB at the same conditions. Also, it is observed that the wireless LAN system with the proposed algorithm supports up to 63Mbps. After the logic synthesis using 0.35um CMOS technology, the logic gate count for the processor with the proposed algorithm can be reduced by 34% in comparison with the conventional one.

Original language	English
Title of host publication	ASICON 2003 - 2003 5th International Conference on ASIC, Proceedings
Editors	Ting-Ao Tang, Wenhong Li, Huihua Yu
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1054-1057
Number of pages	4
ISBN (Electronic)	078037889X
DOIs	https://doi.org/10.1109/ICASIC.2003.1277393
Publication status	Published - 2003
Event	5th International Conference on ASIC, ASICON 2003 - Beijing, China Duration: 2003 Oct 21 → 2003 Oct 24

Publication series

Name	IEEE International Symposium on Semiconductor Manufacturing Conference Proceedings
Volume	2
ISSN (Print)	1523-553X

Conference

Conference	5th International Conference on ASIC, ASICON 2003
Country/Territory	China
City	Beijing
Period	03/10/21 → 03/10/24

Bibliographical note

Publisher Copyright:
© 2003 IEEE

All Science Journal Classification (ASJC) codes

Engineering(all)

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10.1109/ICASIC.2003.1277393

Cite this

Kang, H., Son, B., Jung, Y., Lee, J., & Kim, J. (2003). An efficient bit loading algorithm for OFDM-based wireless LAN systems and hardware implementation results. In T-A. Tang, W. Li, & H. Yu (Eds.), ASICON 2003 - 2003 5th International Conference on ASIC, Proceedings (pp. 1054-1057). Article 5733581 (IEEE International Symposium on Semiconductor Manufacturing Conference Proceedings; Vol. 2). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICASIC.2003.1277393

Kang, Huiyun ; Son, Byungjik ; Jung, Yunho et al. / An efficient bit loading algorithm for OFDM-based wireless LAN systems and hardware implementation results. ASICON 2003 - 2003 5th International Conference on ASIC, Proceedings. editor / Ting-Ao Tang ; Wenhong Li ; Huihua Yu. Institute of Electrical and Electronics Engineers Inc., 2003. pp. 1054-1057 (IEEE International Symposium on Semiconductor Manufacturing Conference Proceedings).

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title = "An efficient bit loading algorithm for OFDM-based wireless LAN systems and hardware implementation results",

abstract = "In this paper, we propose an efficient bit loading algorithm for IEEE 802.11a wireless LAN systems. A conventional bit loading algorithm uses the SNR value of each subcarrier. However, it is very difficult to estimate the exact SNR value in wireless LAN systems due to the randomness of AWGN. Therefore, the proposed algorithm uses the channel frequency response instead of the SNR value of each subcarrier. From 54Mbps simulation, we can obtain the performance gain of 6.5dB at PER of 10{"}2 with the proposed algorithm, whereas the conventional one obtains that of 5dB at the same conditions. Also, it is observed that the wireless LAN system with the proposed algorithm supports up to 63Mbps. After the logic synthesis using 0.35um CMOS technology, the logic gate count for the processor with the proposed algorithm can be reduced by 34% in comparison with the conventional one.",

author = "Huiyun Kang and Byungjik Son and Yunho Jung and Junghyuck Lee and Jaeseok Kim",

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Kang, H, Son, B, Jung, Y, Lee, J & Kim, J 2003, An efficient bit loading algorithm for OFDM-based wireless LAN systems and hardware implementation results. in T-A Tang, W Li & H Yu (eds), ASICON 2003 - 2003 5th International Conference on ASIC, Proceedings., 5733581, IEEE International Symposium on Semiconductor Manufacturing Conference Proceedings, vol. 2, Institute of Electrical and Electronics Engineers Inc., pp. 1054-1057, 5th International Conference on ASIC, ASICON 2003, Beijing, China, 03/10/21. https://doi.org/10.1109/ICASIC.2003.1277393

An efficient bit loading algorithm for OFDM-based wireless LAN systems and hardware implementation results. / Kang, Huiyun; Son, Byungjik; Jung, Yunho et al.
ASICON 2003 - 2003 5th International Conference on ASIC, Proceedings. ed. / Ting-Ao Tang; Wenhong Li; Huihua Yu. Institute of Electrical and Electronics Engineers Inc., 2003. p. 1054-1057 5733581 (IEEE International Symposium on Semiconductor Manufacturing Conference Proceedings; Vol. 2).

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

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AU - Lee, Junghyuck

AU - Kim, Jaeseok

PY - 2003

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N2 - In this paper, we propose an efficient bit loading algorithm for IEEE 802.11a wireless LAN systems. A conventional bit loading algorithm uses the SNR value of each subcarrier. However, it is very difficult to estimate the exact SNR value in wireless LAN systems due to the randomness of AWGN. Therefore, the proposed algorithm uses the channel frequency response instead of the SNR value of each subcarrier. From 54Mbps simulation, we can obtain the performance gain of 6.5dB at PER of 10"2 with the proposed algorithm, whereas the conventional one obtains that of 5dB at the same conditions. Also, it is observed that the wireless LAN system with the proposed algorithm supports up to 63Mbps. After the logic synthesis using 0.35um CMOS technology, the logic gate count for the processor with the proposed algorithm can be reduced by 34% in comparison with the conventional one.

AB - In this paper, we propose an efficient bit loading algorithm for IEEE 802.11a wireless LAN systems. A conventional bit loading algorithm uses the SNR value of each subcarrier. However, it is very difficult to estimate the exact SNR value in wireless LAN systems due to the randomness of AWGN. Therefore, the proposed algorithm uses the channel frequency response instead of the SNR value of each subcarrier. From 54Mbps simulation, we can obtain the performance gain of 6.5dB at PER of 10"2 with the proposed algorithm, whereas the conventional one obtains that of 5dB at the same conditions. Also, it is observed that the wireless LAN system with the proposed algorithm supports up to 63Mbps. After the logic synthesis using 0.35um CMOS technology, the logic gate count for the processor with the proposed algorithm can be reduced by 34% in comparison with the conventional one.

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Kang H, Son B, Jung Y, Lee J, Kim J. An efficient bit loading algorithm for OFDM-based wireless LAN systems and hardware implementation results. In Tang T-A, Li W, Yu H, editors, ASICON 2003 - 2003 5th International Conference on ASIC, Proceedings. Institute of Electrical and Electronics Engineers Inc. 2003. p. 1054-1057. 5733581. (IEEE International Symposium on Semiconductor Manufacturing Conference Proceedings). doi: 10.1109/ICASIC.2003.1277393

An efficient bit loading algorithm for OFDM-based wireless LAN systems and hardware implementation results

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