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논문 기본 정보

자료유형
학술저널
저자정보
Yoon Hak Kim (Chosun University)
저널정보
한국정보통신학회JICCE Journal of information and communication convergence engineering Journal of information and communication convergence engineering Vol.16 No.3
발행연도
2018.9
수록면
142 - 147 (6page)

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초록· 키워드

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We present a practical design algorithm for quantizers at nodes in distributed systems in which each local measurement is quantized without communication between nodes and transmitted to a fusion node that conducts estimation of the parameter of interest. The benefits of vector quantization (VQ) motivate us to incorporate the VQ strategy into our design and we propose a low-complexity design technique that seeks to assign vector codewords into sets such that each codeword in the sets should be closest to its associated local codeword. In doing so, we introduce new distance metrics to measure the distance between vector codewords and local ones and construct the sets of vector codewords at each node to minimize the average distance, resulting in an efficient and independent encoding of the vector codewords. Through extensive experiments, we show that the proposed algorithm can maintain comparable performance with a substantially reduced design complexity.

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Abstract
I. INTRODUCTION
II. PROBLEM FORMULATION
III. VECTOR QUANTIZATION AND NEW DISTANCE METRICS
IV. PROPOSED QUANTIZER DESIGN ALGORITHM
V. APPLICATION OF PROPOSED ALGORITHM TO SENSOR NETWORKS
VI. SIMULATION RESULTS
VII. CONCLUSION
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