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3D-stacked DRAM has been actively studied to overcome the limits of conventional DRAM. The Hybrid Memory Cube (HMC) is a type of 3D-stacked DRAM that has drawn great attention because of its usability for server systems and processing-in-memory (PIM) architecture. Since HMC is not directly stacked on the processor die where the central processing units (CPUs) and graphic processing units (GPUs) are...
This paper presents a low power and area-efficient check node operation circuit for LDPC decoders based on Min-Sum algorithm. By improving a heavily used comparator circuit, our proposed check node unit reduces area and power consumption by 8% and 13%, respectively, without decoding speed degradation compared to conventional LDPC decoders.
It is well-known that shifting can replace a constant multiplication if the constant is a power of 2. We extend this idea in such a way that by employing more than 2 barrel shifters and a supplementary multiplier we can design a very efficient constant multiplier for general constants. With a support of variable precision computation, we can achieve high computational efficiency while maintaining...
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