Frequency Hopping Code Division Multiple Access for Mobile Cellular Communications

该项目由美国国家科学基金会(NSF)的小企业创新研究(SBIR)计划资助，该计划旨在为小企业，特别是小型高科技公司提供参与NSF研究的机会。SBIR计划的第一阶段作为一个过滤器，选择有希望的提案，并确定公司是否能够进行高质量的研究。第二阶段是主要的研究项目。第三阶段是将NSF资助的研究转化为商业应用和技术创新，由后续的私人风险资本或其他非联邦资金支持。本项目一期工程是研究一种新型的跳频码分多址(FH/CDMA)个人通信网。这种移动蜂窝通信系统旨在最大化每个小区的用户数，可以在包含其他用户的频段内运行。为了最大限度地增加用户数，采用了同步FH/CDMA。由于可以检测到干扰，因此采用前向纠错以及擦除检测和纠错。人们正在研究慢跳和快跳，以优化多路径环境中的性能。此外，标准跳频码，如PN和Gold，正在与一些关于跳频码的新想法，如里德-所罗门跳频图案进行比较。

This project is funded under the National Science Foundation's (NSF) Small Business Innovation Research (SBIR) program, which is designed to provide an opportunity for small business, particularly the small high technology firm, to participate in NSF research. Phase I of the SBIR program serves as a filter to select promising proposals and determine if the firm can do high quality research. Phase II is the principal research project. Phase III is the conversion of the NSF-funded research into commercial applications and technological innovation supported by follow-on private venture capital or other non-federal financing. This Phase I project is researching a novel frequency hopping code division multiple access (FH/CDMA) personal communications network. This mobile cellular communications system, designed to maximize the number of users per cell, can operate in a frequency band containing other users. To maximize the number of users, synchronous FH/CDMA is being employed. Forward error correction and erasure detection and correction are being employed since interference can be detected. Slow and fast hopping is being studied to optimize performance in a multipath environment. Also, standard hopping codes such as PN and Gold are being compared with some new ideas on hop codes such as Reed-Solomon hopping patterns.