PECASE: Fundamentals Limits and Codes for M-ary Recording Channels

PECASE：M 元记录通道的基本限制和代码

• 批准号: 9702024
• 负责人: Steven McLaughlin
• 金额: $ 40万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-07-01 至 2003-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9702024&HistoricalAwards=false
• 关键词: PECASE; Fundamentals; Limits; Codes; ary

In conventional magnetic and optical recording, data is stored by saturating the media in one of two states. In M-ary recording, more than two recorded signals are used, allowing for larger storage capacity and higher data transfer rates. A number of M-ary recording channels are being developed for optical recording and a good deal of work has been done by the PI and others in this area. The primary objective in the research plan is to move to the next level in the understanding, modeling and analysis of channels, codes and signal processing for M-ary recording channels. The research plan addresses fundamental limits of M-ary constrained recording channels and new coding approaches which seek to achieve them. The teaching plan seeks to increase the number of trained engineers in signal processing and communications for recording and emphasizes close connection with and feedback from industry. The specific research and educational objectives are: 1) To integrate communications and optical models to better characterize the fundamental limits (i.e. channel capacity) associated with optical (both binary and nonbinary) recording channels. 2) To develop new methodologies for code design for M-ary channels whose constraints are typically difficult to deal with. 3) To develop new modulation codes for M-ary recording channels which exploit their three dimensional nature. 4) To develop new educational approaches that emphasize the interrelation of system components and help develop a broader perspective. 5) To emphasize interaction with industry and to take advantage of undergraduate and PhD co-op programs. 6) To continue developing outreach programs for encouraging research careers for undergraduates. The proposed research and educational activities will: 1) Educate and train a core group of researchers in the emerging area of M-ary recording both in fundamental limits and practical systems implementations. 2) Result in modulation codes that are c onceived and designed from a systems and practical perspective and achieve the largest known information density.

在传统的磁记录和光记录中，数据是通过使介质在两种状态中的一种状态下饱和来存储的。 在M进制记录中，使用两个以上的记录信号，允许更大的存储容量和更高的数据传输速率。 许多多进制记录通道正在开发的光学记录和大量的工作已经完成了PI和其他人在这一领域。 在研究计划的主要目标是移动到下一个层次的理解，建模和分析的通道，代码和信号处理的M进制记录通道。 该研究计划解决了M元约束记录通道的基本限制和寻求实现这些限制的新编码方法。 该教学计划旨在增加信号处理和通信记录方面训练有素的工程师人数，并强调与工业界的密切联系和反馈。 具体的研究和教育目标是：1）整合通信和光学模型，以更好地表征与光学（二进制和非二进制）记录通道相关的基本限制（即通道容量）。 2)针对M进制信道的约束条件难以处理的特点，提出了一种新的码设计方法。 3)开发新的调制编码的M元记录通道，利用其三维性质。 4)开发新的教育方法，强调系统组件的相互关系，并帮助开发更广阔的视野。5)强调与行业的互动，并利用本科和博士合作项目。 6)继续发展外展计划，鼓励本科生从事研究工作。 拟议的研究和教育活动将：1）教育和培训一批核心研究人员在新兴领域的M进制记录的基本限制和实际系统的实现。 2)导致从系统和实用的角度考虑和设计的调制码，并实现最大的已知信息密度。