NDLI: Instantaneously companding baseband SC low-pass filter and ADC for 802.1 la/g WLAN receiver

Content Provider	IEEE Xplore Digital Library
Author	Shenjie Wang Maheshwari, V. Serdijn, W.A.
Copyright Year	2010
Description	Author affiliation: Electronics Research Laboratory, Delft University of Technology, The Netherlands (Shenjie Wang; Maheshwari, V.; Serdijn, W.A.)
Abstract	To handle the 12dB peak-to-average-power ratio (PAPR) of OFDM signals in a 802.1 la/g WLAN receiver baseband, an instantaneously companding system consisting of a 5-order low pass SC filter and a 10-bit pipeline ADC is presented. The filter cut-off and clock frequencies are 10MHz and 100MHz respectively and the ADC sampling frequency is 25MS/s. The filter provides the compressed output directly to the ADC and the signal expansion is done in the digital domain, which eliminates the need of an analog expansion amplifier. For a 12dB increase in dynamic range, it is estimated that the filter consumes 3.7 times less power than a conventional filter while the dynamic range required from the ADC is reduced by 12dB due to companding by a factor of 4. The filter and the ADC are designed to be implemented in a 1.2V, IBM 0.13μm CMOS process and the total power consumption is 75mW.
Starting Page	2215
Ending Page	2218
File Size	394684
Page Count	4
File Format	PDF
ISBN	9781424453085
DOI	10.1109/ISCAS.2010.5537205
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-05-30
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Baseband Low pass filters Wireless LAN Cutoff frequency Dynamic range Peak to average power ratio OFDM Pipelines Clocks Sampling methods
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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