TY - JOUR
T1 - Design of multicarrier OFDM modulator/demodulator based on discrete hartley transform
AU - Shiue, Muh Tian
AU - Jao, Chin Kuo
AU - Chen, Pei Shin
PY - 2010/6
Y1 - 2010/6
N2 - 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-μm CMOS technology with a core area of 928 × 935 μm2. The average power consumption is about 20.16mW at 20MHz and 1.8V supply voltage. Measurement results of the integrated circuit illustrate its superior chip area and power consumption.
AB - 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-μm CMOS technology with a core area of 928 × 935 μm2. The average power consumption is about 20.16mW at 20MHz and 1.8V supply voltage. Measurement results of the integrated circuit illustrate its superior chip area and power consumption.
KW - Discrete hartley transform (DHT)
KW - Fast hartley transform (FHT)
KW - Orthogonal frequency-division multiplexing (OFDM)
UR - http://www.scopus.com/inward/record.url?scp=77953198386&partnerID=8YFLogxK
U2 - 10.1587/transfun.E93.A.1016
DO - 10.1587/transfun.E93.A.1016
M3 - 期刊論文
AN - SCOPUS:77953198386
SN - 0916-8508
VL - E93-A
SP - 1016
EP - 1023
JO - IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
JF - IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
IS - 6
ER -