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[Author] Beihua YING(1hit)

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  • An Energy Efficient Sensor Network Processor with Latency-Aware Adaptive Compression

    Yongpan LIU  Shuangchen LI  Jue WANG  Beihua YING  Huazhong YANG  

     
    PAPER-Integrated Electronics

      Vol:
    E94-C No:7
      Page(s):
    1220-1228

    This paper proposed a novel platform for sensor nodes to resolve the energy and latency challenges. It consists of a processor, an adaptive compressing module and several compression accelerators. We completed the proposed chip in a 0.18µm HJTC CMOS technology. Compared to the software-based solution, the hardware-assisted compression reduces over 98% energy and 212% latency. Besides, we balanced the energy and latency metric using an adaptive module. According to the scheduling algorithm, the module tunes the state of the compression accelerator, as well as the sampling frequency of the online sensor. For example, given a 9µs constraint for a 1-byte operation, it reduces 34% latency while the energy overheads are less than 5%.