Modulation, Detection and Coding for Reliable Information Storage and Retrieval.

这项研究致力于开发新的调制、检测和编码系统，以增加在磁性介质上可靠的数字数据存储和检索的密度。为了设计更好和更有效的信号处理系统，必须对存储通道的信号和噪声特性有透彻的了解。因此，将收集实验数据，以更好地表征通道的输入-输出特性。特别是，重点将放在测量在高记录密度下发生的效应，例如信号非线性。基于这些测量，将开发描述通道的输入-输出特性的数学模型。这些模型将被用来建议改进的调制、检测和编码系统。这些系统的性能将根据这些模型进行评估，并与替代系统进行比较。

This research is concerned with developing new modulation, detection, and coding systems for increasing the density of reliable digital data storage and retrieval on magnetic media. In order to design better and more efficient signal processing systems a thorough knowledge of the signal and noise characteristics of the storage channel must be obtained. Thus experimental data will be collected to better characterize the input-output characteristics of the channel. In particular, emphasis will be placed on measuring effects that occur at high recording densities, e.g., signal nonlinearities. Based on these measurements, mathematical models will be developed which describe the input-output characteristics of the channel. These models will be used to suggest improved modulation, detection, and coding systems. The performance of these systems will be evaluated based upon these models and compared to alternative systems.