Fast parameter estimate for LED points based on the sparsity of frequency offset-phase delay space

SONG Xi-jia; LIU Wei-ya; CHEN Wei; ZHENG Xi-feng

doi:10.3788/OPE.20132101.0167

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Fast parameter estimate for LED points based on the sparsity of frequency offset-phase delay space

Article | 更新时间：2020-08-12

- Fast parameter estimate for LED points based on the sparsity of frequency offset-phase delay space
- Optics and Precision Engineering Vol. 21, Issue 1, Pages: 167-173(2013)
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所 2.中国科学院大学
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20132101.0167
  CLC： TM9235;TN3128
- Received：06 January 2012，
  
  Revised：12 March 2012，
  
  Published Online：24 January 2013，
  
  Published：15 January 2013
- 稿件说明：
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宋喜佳，刘维亚，陈伟，郑喜凤. 基于相频空间稀疏性快速估计发光二极管灯点参数[J]. 光学精密工程, 2013,21(1): 167-173

SONG Xi-jia, LIU Wei-ya, CHEN Wei, ZHENG Xi-feng. Fast parameter estimate for LED points based on the sparsity of frequency offset-phase delay space[J]. Editorial Office of Optics and Precision Engineering, 2013,21(1): 167-173
宋喜佳，刘维亚，陈伟，郑喜凤. 基于相频空间稀疏性快速估计发光二极管灯点参数[J]. 光学精密工程, 2013,21(1): 167-173 DOI： 10.3788/OPE.20132101.0167.

SONG Xi-jia, LIU Wei-ya, CHEN Wei, ZHENG Xi-feng. Fast parameter estimate for LED points based on the sparsity of frequency offset-phase delay space[J]. Editorial Office of Optics and Precision Engineering, 2013,21(1): 167-173 DOI： 10.3788/OPE.20132101.0167.

摘要

为了得到每个发光二极管(LED)灯点对某些目标位置的贡献量，以便获得、记录或重现特定的LED照明模式，本文对控制LED灯点的脉宽调制波形(PWM)的参数(振幅、频率偏移量、相位延迟)估计问题进行了研究。首先

将频率偏移-相位延迟空间离散化成网状格点空间，根据测量到的数据在格点空间具有稀疏性的特点建立了稀疏模型。然后，基于该稀疏模型，利用正交匹配追踪算法(OMP)用很少的采样点快速地重建出未知参数。最后，采用逐级迭代细分网格技术优化稀疏模型以便有效地抑制估计误差。实验结果表明，本文方法仅使用相当于奈奎斯特采样定理要求的27.5%的采样点即可准确地重建未知参数，从而快速估计LED灯点的参数。在理想情况下，本文算法的均方根误差小于068%。另外，不同噪声条件下的对比实验说明该算法在信噪比大于20 db时鲁棒性较好。

Abstract

To obtain every single LEDs contribution when they illuminate the target locations and to acquire

record or reappear some specific light patterns

this paper explores how to estimate the parameters of Pulse Width Modulation (PWM). These parameters are amplitude

frequency offset and phase delay

and they are generally used to control the LED points. Firstly

the frequency offset-phase delay space is dispersed into reticulated grid spaces

and a sparse model is established based on the measured data with sparsity characteristics in the grid space. Then

on the basis of the sparse model

very few samples are utilized to reconstruct the unknown parameters fast by means of Orthogonal Matching Pursuit (OMP) algorithm. Finally

an iterative refinement grid technique is introduced to optimize the sparse model so as to suppress the estimation error effectively. Experimental results indicate that the method presented in this paper can reconstruct the unknown parameters fast by using only 27.5% samples that of the traditional Nyquist sampling theorem. Simultaneously

this algorithm is found robustness when Signal to Noise Ratio(SNR) is higher than 20 db after lots of contrast tests in different noise conditions.

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references

常锋，孙志远，王瑞光,等. LED 显示图像的非均匀度校正改进方法[J]. 光学精密工程， 2011,19(4):929-937.CHANG F, SUN ZH Y, WANG R G, et al.. Improvement of nonuniformity correction of LED display images [J]. Opt. Precision Eng., 2011,19(4):929-937. (in Chinese)[2]张鑫，王瑞光，陈宇,等. LED显示屏相机采集影像渐晕的修正[J]. 光学精密工程, 2010,18(11): 2332-2338.ZHANG X, WANG R G, CHEN Y, et al.. Calibration of image vignetting acquired by camera on LED display panel [J]. Opt. Precision Eng., 2010,18(11):2332-2338. (in Chinese)[3]岳明晶，陈宇，郑喜凤,等. 大屏幕显示屏灰度等级检测技术研究[J]. 液晶与显示, 2010, 25(3): 407-411.YUE M J, CHEN Y, ZHENG X F, et al.. Scale measurement technique of LED display panel [J]. Chinese Journal of Liquid Crystals and Displays, 2010,25(3):407-411. (in Chinese)[4]SCHUBERT E F, KIM J K. Solid-state light sources getting smart[J]. Science, 2005,308(5726):1274-1278.[5]MORENO I, SUN C C. Modeling the radiation pattern of LEDs[J]. Opt. Express, 2008,16(3):1808-1819.[6]PANG G，KWAN T，LIU H, et al.. LED wireless. Industry applications magazine [J]. IEEE, 2002,8(1):21-28.[7]KOMINE T, NAKAGAWA M. Fundamental analysis for visible-light communication system using LED lights[J]. Ieee T Consum Electr, 2004,50(1):100-107.[8]GRINER U N, ARNON S. Multiuser diffuse indoor wireless infrared communication using equalized synchronous CDMA [J]. Ieee T Commun, 2006,54(9):1654-1662.[9]ELGALA H，MESLEH R, HAAS H. Indoor broadcasting via white LEDs and OFDM [J]. Ieee T Consum. Electr., 2009,55(3):1127-1134.[10]AFGANI M Z，HAAS H，ELGALA H, et al.. Visible light communication using OFDM [J]. 2006 2nd International Conference on Testbeds and Research Infrastructures for the Development of Networks & Communities, 2006:80-85.[11]LINNARTZ J P，FERI L，YANG H, et al.. Code division-based sensing of illumination contributions in solid-state lighting systems [J]. IEEE Transactions on Signal Processing, 2009,57(10):3984-3998.[12]LINNARTZ JPMG，FERI L，YANG H, et al.. Communications and sensing of illumination contributions in a power LED lighting system [J]. IEEE Communication Society, 2008, 5396-5400.[13]YANG H，SCHENK T C W，BERGMANS J W M, et al.. Parameter estimation of multiple pulse trains for illumination sensing [J]. IEEE， 2010, 3122-3125.[14]YANG H M，SCHENK T C W，BERGMANS J W M, et al.. Enhanced illumination sensing using multiple harmonics for LED lighting systems[J]. IEEE Transactions on Signal Processing, 2010,58(11):5508-5522.[15]YANG H M，BERGMANS J W M, SCHENK T C W. Illumination sensing in LED lighting systems based on frequency-division multiplexing[J]. IEEE Transactions on Signal Processing, 2009,57(11):4269-4281.[16]代国定，李卫敏，徐洋, 等. 一种新颖的脉宽调制平均分割调光算法的设计与实现[J]. 光电子激光, 2009， (11): 1434-1437.DAI G D, LI W M, XU Y, et al.. Design and realization of a novel average separated PWM dimming[J]. Journal of Optoelectronics Laser, 2009， (11):1434-1437. (in Chinese)[17]成萍，赵家群，姜义成，等. 稀疏信号表示中的幅度偏差及消除方法[J]. 哈尔滨工业大学学报, 2008， (9):1506-1508.CHENG P, ZHAO J Q, JIANG Y C, et al.. Amplitude bias and its elimination in sparse signal representation [J]. Journal of Harbin Instituteof Technology, 2008, (9):1506-1508. (in Chinese)[18]石光明，刘丹华，高大化, 等. 压缩感知理论及其研究进展[J]. 电子学报， 2009， (5):1070-1081.SHI G M, LIU D H, GAO D H, et al.. Advances in theory and application of compressed sensing[J]. Acta Electronica Sinica, 2009, (5):1070-1081. (in Chinese)[19]焦李成，杨淑媛，刘芳, 等. 压缩感知回顾与展望[J]. 电子学报, 2011, (7):1651-1662.JIAO L C, YANG SH Y, LIU F, et al.. Development and prospect of compressive sensing [J].2011, (7):1651-1662. (in Chinese)[20]MALLAT S G, ZHANG Z F. Matching pursuits with time-frequency dictionaries [J]. IEEE Transactions on Signal Procesing, 1993,41(12):3397-3415.[21]TROPP J A, GILBERT A C. Signal recovery from random measurements via orthogonal matching pursuit [J]. IEEE Transaction Inform Theory, 2007,53(12):4655-4666.[22]FORNASIER M, RAUHUT H. Iterative thresholding algorithms [J]. Appl. Comput Harmon A, 2008,25(2):187-208.[23]GOGINENI S, NEHORAI A. Compressed illumination sensing[J]. Ieee Signal Processing Letters, 2011,18(10):587-590.[24]汪岚.智能LED信息显示屏控制系统设计与应用\[J\]. 液晶与显示, 2011,26(5):655-659.WANG L.Design and application of intelligent LED information display screen \[J\]. Chinese Journal of Liquid Crystals and Displays, 2011,26(5):655-659. (in Chinese)[25]郝冬晶，钱可元，罗毅. 大尺寸LED背光源网点的设计及优化\[J\]. 液晶与显示, 2011.26(5):598-603.HAO D J,QIAN K Y,LUO Y.Design and optimization of dot-pattern for large scale LED backlight unit \[J\]. Chinese Journal of Liquid Crystals and Displays, 2011.26(5):598-603. (in Chinese)[26]于洪春，邓意成, 等. 面积约束下的最优阈值法分割LED像素点阵 \[J\]. 液晶与显示, 2012,27(1):653-657.YU H C, DENG Y C, et al.. Use the optimal threshold method with area constraint to segment LED pixel matrix \[J\]. Chinese Journal of Liquid Crystals and Displays, 2012,27(1): 653-657. (in Chinese)

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