作者：
Kim, Y. H.Chosun Univ
Dept Elect Engn 309 Pilmum Daero Gwangju 61452 South Korea
An efficient design algorithm for local quantisers at nodes that optimises the global metric (i.e. estimation error) for distributed estimation systems is proposed. Noting that the quantisation partitions constructed ...
详细信息
An efficient design algorithm for local quantisers at nodes that optimises the global metric (i.e. estimation error) for distributed estimation systems is proposed. Noting that the quantisation partitions constructed to minimise the estimation error are not independently encodable at each node, a novel technique of compressing the partitions into sets of codewords while ensuring a perfect independent encoding is presented, leading to the sets with reasonable cardinality, which enables transmission of multiple codewords at nodes for estimation. Experiments demonstrate a significantly improved performance over various quantiser designs while achieving about 26% reduction in the size of codeword sets compared with a recent design.
作者：
Kim, Y. H.Chosun Univ
Dept Elect Engn 309 Pilmum Daero Kwangju 61452 South Korea
A novel algorithm of designing independently operating quantisers at each node that optimise the system-wide metric (i.e. estimation error) for distributed estimation systems is presented. Assuming that each node can ...
详细信息
A novel algorithm of designing independently operating quantisers at each node that optimise the system-wide metric (i.e. estimation error) for distributed estimation systems is presented. Assuming that each node can collect only its local measurement, the quantisation partitions constructed based on minimisation of the estimation error are not independently encodable at each node. To ensure a perfect independent encoding, a new concept of assigning multiple codewords to each partition is introduced and a simple iterative algorithm that generates a set of such codewords for each partition is proposed and demonstrated through experiments to achieve a significant performance improvement over typical designs and distributed novel designs recently published. Furthermore, the codeword set optimisation rules are suggested to reduce the cardinality of the sets for practical applications.
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