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Approximating Arithmetic Circuits for IoT Devices Data Processing
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DOI：10.1016/j.cie.2022.108792.png)
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摘要
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Smart cities require improved and new generation IoT devices, sensors, and technology so that a whole new digital environment can be created. The various aspects of the smart city can be improved through digital transformation, sustainability, resource management, improved quality of life, and security because of emerging applications such as voice recognition, image sensing, and so on. There is a massive deployment of smart devices and sensors, which sense, collect, and process a large amount of data. So there are many critical strategies and intelligent computing is required. The most popular way to solve computational issues with conventional blocks and structures to achieve exact, deterministic results is hard computing. However, emerging applications are tolerant towards errors, so the need for a precise result is diminishing. Approximate computing is a new para-digm in the field where error tolerance is applicable; it relaxes the need for an accurate and deterministic result while also providing advantages in terms of area, time, and delay. In this paper, we proposed a novel approx-imate computation based on a systematic approach that utilises the Look-Up-Table (LUT) with specific errors to achieve an approximate arithmetic circuit. Approximate adder circuit is designed so that this technique can be reused for different designs deployed in various applications or IoT devices. The analysis is based on area, delay with a considered error percentage. The proposed arithmetic circuit achieves a 68 % reduction in chip area compared to the exact one with a delay of 6.159 ns. The results show that the designed approximate arithmetic circuit is smaller in size, and energy-efficient and can be exploited to implement circuits used in IoT devices.
Keyword:
Approximate computing
Sensors
Smart cities
Arithmetic circuit
IoT
期刊
IF:
6.5
论文数:
1.0W
被引数:
3.8W
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