Proceedings ArticleDOI
Low-power LDPC decoder design exploiting memory error statistics
Junlin Chen,Lei Wang +1 more
- pp 171-176
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TLDR
Simulation results of the proposed low-power LDPC decoder technique demonstrate that, by deliberately adjusting the scaled supply voltage to memory bits in different memory locations, the memory power consumption as well as the overall energy consumption of the LD PC decoder can be significantly reduced with negligible performance loss.Abstract:
This paper presents a low-power LDPC decoder design by exploiting inherent memory error statistics due to voltage scaling. By analyzing the error sensitivity to the decoding performance at different memory bits and memory locations in the LDPC decoder, the scaled supply voltage is applied to memory bits with high algorithmic error-tolerance capability to reduce the memory power consumption while mitigating the impact on decoding performance. We also discuss how to improve the tolerance to memory errors by increasing the number of iterations in LDPC decoders, and investigate the energy overheads and the decoding throughput loss due to extra iterations. Simulation results of the proposed low-power LDPC decoder technique demonstrate that, by deliberately adjusting the scaled supply voltage to memory bits in different memory locations, the memory power consumption as well as the overall energy consumption of the LDPC decoder can be significantly reduced with negligible performance loss.read more
Citations
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Journal ArticleDOI
Energy-Adaptive Signal Processing Under Renewable Energy
Junlin Chen,Lei Wang +1 more
TL;DR: Simulation results demonstrate that by adaptively tuning signal processing kernels with renewable energy, significant improvements in time coverage and energy efficiency can be achieved in the presence of unstable harvested energy.
Journal ArticleDOI
Self-sustained UWB Sensing: A Link and Energy Adaptive Approach
Junlin Chen,Dong Zhao,Lei Wang +2 more
TL;DR: It was demonstrated that the proposed technique can achieve much better detection time coverage and detection range coverage than the conventional UWB radar and is insensitive to many practical issues such as the limited battery capacity.
References
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Proceedings ArticleDOI
Parameter variations and impact on circuits and microarchitecture
TL;DR: Process, voltage and temperature variations; and their impact on circuit and microarchitecture; and possible solutions to reduce the impact of parameter variations and to achieve higher frequency bins are presented.
Codes and Decoding on General Graphs
TL;DR: It is showed that many iterative decoding algorithms are special cases of two generic algorithms, the min-sum and sum-product algorithms, which also include non-iterative algorithms such as Viterbi decoding.
Journal ArticleDOI
Modeling of failure probability and statistical design of SRAM array for yield enhancement in nanoscaled CMOS
TL;DR: A methodology to statistically design the SRAM cell and the memory organization using the failure-probability and the yield-prediction models and can be used in an early stage of a design cycle to enhance memory yield in nanometer regime.
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