Design of Multicarrier OFDM Modulator/Demodulator Based on Discrete Hartley Transform

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Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/51931

Title:	Design of Multicarrier OFDM Modulator/Demodulator Based on Discrete Hartley Transform
Authors:	Shiue,MT;Jao,CK;Chen,PS
Contributors:	電機工程學系
Keywords:	CHANNELS
Date:	2010
Issue Date:	2012-03-28 10:10:45 (UTC+8)
Publisher:	國立中央大學
Abstract:	In this paper, a novel orthogonal frequency-division multiplexing (OFDM) modulator/demodulator based on real-valued discrete Hartley transform (DHT) is presented and implemented for the IEEE 802.11a/g wireless local area network (LAN). Instead of the conventional complex-valued fast Fourier transform (FFT) for OFDM systems, the proposed architecture employs two real-valued fast DHT (FHT) kernels and one post processing unit. By taking advantage of the real-valued operation of FHT, this approach reduces the number of multiplications compared with the radix-2 FFT. The proposed DHT-based modulator/demodulator was designed and fabricated in 0.18-mu m CMOS technology with a core area of 928 x 935 mu m(2). The average power consumption is about 20.16 mW at 20 MHz and 1.8 V supply voltage. Measurement results of the integrated circuit illustrate its superior chip area and power consumption.
Relation:	IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES
Appears in Collections:	[Department of Electrical Engineering] journal & Dissertation

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