A Low-Power LDPC Decoder for Multimedia Wireless Sensor Networks

Meng XU; Xincun JI; Jianhui WU; Meng ZHANG

doi:10.1587/transcom.E96.B.939

Regular Section

A Low-Power LDPC Decoder for Multimedia Wireless Sensor Networks

Meng XU, Xincun JI, Jianhui WU, Meng ZHANG

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Keywords: LDPC, Multimedia Wireless Sensor Networks, low power design, layered decoding, memory bypassing scheme, Benes network

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2013 Volume E96.B Issue 4 Pages 939-947

DOI https://doi.org/10.1587/transcom.E96.B.939

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Abstract

This paper presents a low-power LDPC decoder that can be used in Multimedia Wireless Sensor Networks. Three low power design techniques are proposed in the decoder design: a layered decoding algorithm, a modified Benes network and a modified memory bypassing scheme. The proposed decoder is implemented in TSMC 0.13µm, 1.2V CMOS process. Experiments show that when the clock frequency is 32MHz, the power consumption of the proposed decoder is 38.4mW, the energy efficiency is 53.3pJ/bit/ite and the core area is 1.8mm².

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