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An Efficient Hardwa...
An Efficient Hardware Architecture with Adjustable Precision and Extensible Range to Implement Sigmoid and Tanh Functions
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- Chen, Hui (författare)
- Nanjing Univ, Sch Elect Sci & Engn, Nanjing 210023, Peoples R China.
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- Jiang, Lin (författare)
- Nanjing Univ, Sch Elect Sci & Engn, Nanjing 210023, Peoples R China.
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- Yang, Heping (författare)
- Nanjing Univ, Sch Elect Sci & Engn, Nanjing 210023, Peoples R China.
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- Lu, Zhonghai (författare)
- KTH,Elektronik och inbyggda system
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- Fu, Yuxiang (författare)
- Nanjing Univ, Sch Elect Sci & Engn, Nanjing 210023, Peoples R China.
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- Li, Li (författare)
- Nanjing Univ, Sch Elect Sci & Engn, Nanjing 210023, Peoples R China.
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- Yu, Zongguang (författare)
- Nanjing Univ, Sch Elect Sci & Engn, Nanjing 210023, Peoples R China.
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Nanjing Univ, Sch Elect Sci & Engn, Nanjing 210023, Peoples R China Elektronik och inbyggda system (creator_code:org_t)
- 2020-10-21
- 2020
- Engelska.
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Ingår i: Electronics. - : MDPI. - 2079-9292. ; 9:10
- Relaterad länk:
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https://www.mdpi.com...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Ämnesord
Stäng
- The efficient and precise hardware implementations of tanh and sigmoid functions play an important role in various neural network algorithms. Different applications have different requirements for accuracy. However, it is difficult for traditional methods to achieve adjustable precision. Therefore, we propose an efficient-hardware, adjustable-precision and high-speed architecture to implement them for the first time. Firstly, we present two methods to implement sigmoid and tanh functions. One is based on the rotation mode of hyperbolic CORDIC and the vector mode of linear CORDIC (called RHC-VLC), another is based on the carry-save method and the vector mode of linear CORDIC (called CSM-VLC). We validate the two methods by MATLAB and RTL implementations. Synthesized under the TSMC 40 nm CMOS technology, we find that a special case AR divide VR(3,0), based on RHC-VLC method, has the area of 4290.98 mu m2 and the power of 1.69 mW at the frequency of 1.5 GHz. However, under the same frequency, AR divide VC(3) (a special case based on CSM-VLC method) costs 3196.36 mu m2 area and 1.38 mW power. They are both superior to existing methods for implementing such an architecture with adjustable precision.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- sigmoid and tanh
- hyperbolic and linear CORDIC
- carry-save method
- efficient hardware
- adjustable precision
- high speed
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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