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Articles by Lihui Jiang
Total Records ( 2 ) for Lihui Jiang
  Lihui Jiang , Guanghui Ren , Gangyi Wang , Zhilu Wu and Shaobin Li
  The acquisition of Pseudo-Noise (PN) code is one of the essential technologies in Direct Sequence Spread Spectrum (DS/SS) communication. Conventional Parallel Matched Filter (CPMF) features in high acquisition speed but it will consume a large amount of hardware resource in the case of long PN code. This paper focuses on reducing the hardware consumption and proposes a novel matched filter architecture: Time Division Multiplex Matched Filter (TDMMF). With identical processing gain as CPMF, TDMMF can save the hardware consumption by 50, 75% and even more through reusing the shift registers, multipliers and accumulators. This makes the proposed TDMMF suitable for high speed acquisition of long PN code.
  Gangyi Wang , Guanghui Ren , Lihui Jiang and Taifan Quan
  Great progress has been made in image dehazing recently, while the sky region processed by these algorithms tends to be degraded by serious noise and color distortion. Based on the in-depth analysis on the degradation, the paper proposes an improved dehazing algorithm which first segments the haze image into the sky and non-sky region, then estimates the coefficients of the two regions separately, followed by the combination of the regions with a refining step. Experiment results show that the proposed algorithm provides significant advantage in generating smoother and more natural sky region, while keeping the non-sky region almost the same as the state of the art algorithms.
 
 
 
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