Genetic Studies on Infection-Related Morphogenesis in Magnaporthe grisea

在传统的磁和光记录中，通过使介质处于两种状态之一的饱和来存储数据。在多进制记录中，使用两个以上的记录信号，从而允许更大的存储容量和更高的数据传输速率。许多M元记录通道正在开发用于光学记录，PI和其他人在这一领域已经做了大量工作。研究计划的主要目标是在多进制记录通道的通道、编码和信号处理的理解、建模和分析方面更上一层楼。该研究计划解决了M元受限记录通道的基本限制以及寻求实现这些限制的新编码方法。教学计划力求增加在信号处理和录音通信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)集成通信和光学模型，以更好地描述与光学(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)为多进制信道的编码设计开发新的方法，这些信道的约束通常难以处理。3)开发用于利用其三维特性的多进制记录通道的新的调制码。4)开发新的教育方法，强调系统组成部分之间的相互关系，并帮助发展更广阔的视角。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)对新兴的M-ary记录领域的核心研究人员进行基本限制和实际系统实施方面的教育和培训。2)研究从系统和实用角度构思和设计的调制码，并获得最大的已知信息密度。

NCR-9702024 McLaughlin, Steven 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) Resu lt in modulation codes that are conceived and designed from a systems and practical perspective and achieve the largest known information density.