Dynamic voltage and frequency scaling scheme for an adaptive LDPC decoder using SNR estimation
- Title
- Dynamic voltage and frequency scaling scheme for an adaptive LDPC decoder using SNR estimation
- Author
- 정기석
- Keywords
- LDPC decoder; SNR estimation; DVFS
- Issue Date
- 2013-11
- Publisher
- SPRINGER INTERNATIONAL PUBLISHING AG, GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND
- Citation
- EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING, 2013(1), 1-10 p.
- Abstract
- In this paper, we propose a low-power adaptive low-density parity check (LDPC) decoder that utilizes dynamic voltage and frequency scaling to reduce power consumption. Most existing adaptive LDPC decoders have focused only on the decoding performance based on the signal-to-noise ratio (SNR) estimation. However, significant idle power is consumed when the decoder awaits the next frame after processing a frame. In mobile communication standards such as China Mobile Multimedia Broadcasting and Digital Video Broadcasting Satellite Second Generation, adaptive coding and modulation has been adopted. Thus, it is possible to reduce the power consumption efficiently by using the SNR estimation. In this paper, we apply a customized frequency selection scheme and a variable voltage generation scheme to an adaptive LDPC decoder to reduce the dynamic power consumption. The proposed schemes result in a reduction of 44% in the energy consumption of an LDPC decoder implemented using 0.18-mu m complementary metal-oxide-semiconductor technology.
- URI
- https://jwcn-eurasipjournals.springeropen.com/articles/10.1186/1687-1499-2013-255http://hdl.handle.net/20.500.11754/55641
- ISSN
- 1687-1472; 1687-1499
- DOI
- 10.1186/1687-1499-2013-255
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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- 1687-1499-2013-255.pdfDownload
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