Pansatiankul Dhawat E, Sawchuk Alexander A
Signal and Image Processing Institute, the University of Southern California, Los Angeles, California 90089-2564, USA.
Appl Opt. 2003 Jan 10;42(2):275-90. doi: 10.1364/ao.42.000275.
We present a comprehensive discussion of modulation coding for page-oriented optical data storage (PODS) systems that write and read data in a two-dimensional (2-D) bit image format. We give several 2-D mathematical models for these systems, including two-photon optical data storage systems. Using these models, we describe the nature of intersymbol interference (ISI) in imaging PODS systems and find that its characteristics are different from ISI in conventional serial magnetic and optical data storage systems. To overcome the ISI in these imaging PODS systems, we present what is, to our knowledge, a novel 2-D modulation coding scheme. We also present many examples of fixed-length 2-D modulation codes with diverse properties. Finally, we analyze and compare the bit-error rate performance of these codes.
我们对面向页面的光学数据存储（PODS）系统的调制编码进行了全面讨论，该系统以二维（2-D）位图像格式写入和读取数据。我们给出了这些系统的几个二维数学模型，包括双光子光学数据存储系统。利用这些模型，我们描述了成像PODS系统中符号间干扰（ISI）的性质，发现其特性与传统串行磁光数据存储系统中的ISI不同。为了克服这些成像PODS系统中的ISI，据我们所知，我们提出了一种新颖的二维调制编码方案。我们还给出了许多具有不同特性的定长二维调制码的示例。最后，我们分析并比较了这些码的误码率性能。
