On-line step-size calculation using signal power estimation-tone grouping for frequency-domain equalizer of DMT-based systems

Chih Feng Wu; Muh Tian Shiue; Chorng Kuang Wang

On-line step-size calculation using signal power estimation-tone grouping for frequency-domain equalizer of DMT-based systems

Chih Feng Wu, Muh Tian Shiue, Chorng Kuang Wang

Department of Electrical Engineering

Research output: Contribution to conference › Paper › peer-review

1 Scopus citations

Abstract

Based on the signal power estimation (SPE), a tone grouping (TG) approach is proposed to on-line calculate the subchannel step-size for FEQ of DMT systems. It is a reliable method that the SNR loss caused by the misadjustment of LMS algorithm is limited to less than 0.25-dB per tone. Consequently, an SPE-TG look-up table (LUT), which consists of 15 groups from 2⁶ to 2^-8, is designed for DMT ADSL systems (as a vehicle). Finally, the simulation results show that the data rate difference between floating step-size and SPE-TG is less than ±0.21%.

Original language	English
Pages	685-688
Number of pages	4
State	Published - 2004
Event	2004 IEEE Asia-Pacific Conference on Circuits and Systems, APCCAS 2004: SoC Design for Ubiquitous Information Technology - Tainan, Taiwan Duration: 6 Dec 2004 → 9 Dec 2004

Conference

Conference	2004 IEEE Asia-Pacific Conference on Circuits and Systems, APCCAS 2004: SoC Design for Ubiquitous Information Technology
Country/Territory	Taiwan
City	Tainan
Period	6/12/04 → 9/12/04

Cite this

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title = "On-line step-size calculation using signal power estimation-tone grouping for frequency-domain equalizer of DMT-based systems",

abstract = "Based on the signal power estimation (SPE), a tone grouping (TG) approach is proposed to on-line calculate the subchannel step-size for FEQ of DMT systems. It is a reliable method that the SNR loss caused by the misadjustment of LMS algorithm is limited to less than 0.25-dB per tone. Consequently, an SPE-TG look-up table (LUT), which consists of 15 groups from 26 to 2-8, is designed for DMT ADSL systems (as a vehicle). Finally, the simulation results show that the data rate difference between floating step-size and SPE-TG is less than ±0.21%.",

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On-line step-size calculation using signal power estimation-tone grouping for frequency-domain equalizer of DMT-based systems. / Wu, Chih Feng; Shiue, Muh Tian; Wang, Chorng Kuang.
2004. 685-688 Paper presented at 2004 IEEE Asia-Pacific Conference on Circuits and Systems, APCCAS 2004: SoC Design for Ubiquitous Information Technology, Tainan, Taiwan.

Research output: Contribution to conference › Paper › peer-review

TY - CONF

T1 - On-line step-size calculation using signal power estimation-tone grouping for frequency-domain equalizer of DMT-based systems

AU - Wu, Chih Feng

AU - Shiue, Muh Tian

AU - Wang, Chorng Kuang

PY - 2004

Y1 - 2004

N2 - Based on the signal power estimation (SPE), a tone grouping (TG) approach is proposed to on-line calculate the subchannel step-size for FEQ of DMT systems. It is a reliable method that the SNR loss caused by the misadjustment of LMS algorithm is limited to less than 0.25-dB per tone. Consequently, an SPE-TG look-up table (LUT), which consists of 15 groups from 26 to 2-8, is designed for DMT ADSL systems (as a vehicle). Finally, the simulation results show that the data rate difference between floating step-size and SPE-TG is less than ±0.21%.

AB - Based on the signal power estimation (SPE), a tone grouping (TG) approach is proposed to on-line calculate the subchannel step-size for FEQ of DMT systems. It is a reliable method that the SNR loss caused by the misadjustment of LMS algorithm is limited to less than 0.25-dB per tone. Consequently, an SPE-TG look-up table (LUT), which consists of 15 groups from 26 to 2-8, is designed for DMT ADSL systems (as a vehicle). Finally, the simulation results show that the data rate difference between floating step-size and SPE-TG is less than ±0.21%.

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T2 - 2004 IEEE Asia-Pacific Conference on Circuits and Systems, APCCAS 2004: SoC Design for Ubiquitous Information Technology

Y2 - 6 December 2004 through 9 December 2004

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On-line step-size calculation using signal power estimation-tone grouping for frequency-domain equalizer of DMT-based systems

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