LDPC Decoder with an Adaptive Wordwidth Datapath for Energy and BER Co-Optimization
Joint Authors
Mohsenin, Tinoosh
Shirani-mehr, Houshmand
Baas, Bevan M.
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-05-09
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
An energy efficient low-density parity-check (LDPC) decoder using an adaptive wordwidth datapath is presented.
The decoder switches between a Normal Mode and a reduced wordwidth Low Power Mode.
Signal toggling is reduced as variable node processing inputs change in fewer bits.
The duration of time that the decoder stays in a given mode is optimized for power and BER requirements and the received SNR.
The paper explores different Low Power Mode algorithms to reduce the wordwidth and their implementations.
Analysis of the BER performance and power consumption from fixed-point numerical and post-layout power simulations, respectively, is presented for a full parallel 10GBASE-T LDPC decoder in 65 nm CMOS.
A 5.10 mm2 low power decoder implementation achieves 85.7 Gbps while operating at 185 MHz and dissipates 16.4 pJ/bit at 1.3 V with early termination.
At 0.6 V the decoder throughput is 9.3 Gbps (greater than 6.4 Gbps required for 10GBASE-T) while dissipating an average power of 31 mW.
This is 4.6× lower than the state of the art reported power with an SNR loss of 0.35 dB at BER=10-7.
American Psychological Association (APA)
Mohsenin, Tinoosh& Shirani-mehr, Houshmand& Baas, Bevan M.. 2013. LDPC Decoder with an Adaptive Wordwidth Datapath for Energy and BER Co-Optimization. VLSI Design،Vol. 2013, no. 2013, pp.1-14.
https://search.emarefa.net/detail/BIM-507557
Modern Language Association (MLA)
Mohsenin, Tinoosh…[et al.]. LDPC Decoder with an Adaptive Wordwidth Datapath for Energy and BER Co-Optimization. VLSI Design No. 2013 (2013), pp.1-14.
https://search.emarefa.net/detail/BIM-507557
American Medical Association (AMA)
Mohsenin, Tinoosh& Shirani-mehr, Houshmand& Baas, Bevan M.. LDPC Decoder with an Adaptive Wordwidth Datapath for Energy and BER Co-Optimization. VLSI Design. 2013. Vol. 2013, no. 2013, pp.1-14.
https://search.emarefa.net/detail/BIM-507557
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-507557