Design and implementation of a low-power OFDM receiver for wireless communications

Orthogonal Frequency-Division Multiplexing (OFDM) systems can efficiently combat the issue of frequency-selective fading channels. Therefore, OFDM has become one of the most popular baseband modulation techniques for wireless communications. This paper presents the design and implementation of a low...

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Bibliographic Details
Published in:IEEE transactions on consumer electronics 2012-08, Vol.58 (3), p.739-745
Main Authors: Yu, Chu, Sung, Chen-Hen, Kuo, Chien-Hung, Yen, Mao-Hsu, Chen, Sao-Jie
Format: Article
Language:English
Subjects:
Channel estimation
CMOS
Design engineering
Estimation
Hardware
Local area networks
Modulation
OFDM
OFDM baseband receiver
Orthogonal Frequency Division Multiplexing
Receivers
Registers
resource-sharingtechniques
Signal detection
Wireless communication
WLAN
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Summary:Orthogonal Frequency-Division Multiplexing (OFDM) systems can efficiently combat the issue of frequency-selective fading channels. Therefore, OFDM has become one of the most popular baseband modulation techniques for wireless communications. This paper presents the design and implementation of a low-power OFDM baseband receiver for wireless local area networks (WLAN). The proposed architecture employs low-power register files and resource-sharing techniques, thus consuming less power than many existing works. The proposed design adopts a number of area-efficient hardware structures to further reduce the hardware cost. Finally, because it is designed using 0.18 μm CMOS technology, the core of the proposed chip has approximately 239K gates, and its power consumption is approximately 36 mW at 20 MHz.
ISSN:0098-3063
1558-4127
DOI:10.1109/TCE.2012.6311312