NDLI: A low complexity real-valued kernel DHT-based OFDM modulator/demodulator design

Content Provider	IEEE Xplore Digital Library
Author	Pei-Shin Chen Chin-Kuo Jao Muh-Tian Shiue
Copyright Year	2009
Description	Author affiliation: Department of Electrical Engineering, National Central University, Chungli 32001, Taiwan (Pei-Shin Chen; Chin-Kuo Jao; Muh-Tian Shiue)
Abstract	In this paper, a novel real-valued orthogonal frequency-division multiplexing (OFDM) modulator/demodulator based on discrete Hartley transform (DHT) is presented and implemented for the application in IEEE 802.11a/g wireless LAN. The proposed DHT-based architecture employs two real-valued fast DHT (FHT) kernel instead of the conventional complex-valued fast Fourier transform (FFT) for OFDM systems. By taking advantage of the real-valued operation of FHT, this approach can reduce the number of multiplications compared with the radix-2 FFT. Moreover, the DCT-based radix-2 FHT algorithm is realized to reduce the multiplications of conventional radix-2 FHT. The proposed real-valued DHT-based modulator/ demodulator has been designed and fabricated in a 0.18-µm CMOS technology with a core area of 928×935 $µm^{2}.$ The average power consumption is about 20.16 mW at 20MHz and 1.8 V supply voltage.
Starting Page	1529
Ending Page	1532
File Size	1230060
Page Count	4
File Format	PDF
ISBN	9781424438273
DOI	10.1109/ISCAS.2009.5118059
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-05-24
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Kernel OFDM modulation Demodulation CMOS technology Frequency division multiplexing Frequency modulation Discrete transforms Wireless LAN Fast Fourier transforms Energy consumption
Content Type	Text
Resource Type	Article

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