CAREER: Intersymbol/Interchannel Interference Cancellation Using Multirate Filterbanks

职业：使用多速率滤波器组消除符号间/通道间干扰

• 批准号: 9703377
• 负责人: Xiang-Gen Xia
• 金额: $ 21.27万
• 依托单位: University of Delaware
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-06-01 至 2003-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9703377&HistoricalAwards=false
• 关键词: CAREER; Intersymbol; Interchannel; Interference; Cancellation

This project is developing new InterSymbol Interference (ISI) and InterChannel Interference (ICI) cancellation methods in communication systems by using pre/post coding via nonmaximally decimated multirate filterbanks. It will also provide up to date information in ancillary areas via several undergraduate and graduate courses. These include digital communication systems, error control coding, information theory and data compression, wireless digital communications, and multirate filterbanks and wavelets. It is of utmost importance that students are well trained in the rapidly growing multimedia communications area. It has been shown that any finite tap ISI that may have spectral-nulls (or frequency-selective fading) characteristics can be eliminated completely by using nonmaximally decimated finite impulse response multirate filterbanks in pre/post coding. Moreover it has been shown that the precoding may be independent of the ISI channels and therefore feedback may not be necessary. In this research, not only the ISI but also random channel noise in communication systems is being considered as a whole. In particular, the multirate filterbank pre/post coding for eliminating ISI, and the traditional error protection coding for correcting random errors, are being combined to achieve better performance that existing techniques. This pre/post coding technique will also be applied to mitigate ICI in multiple-user communication systems, such as wireless mobile communication systems.

本项目通过使用非最大抽取多速率滤波器组的预/后编码，开发通信系统中新的符号间干扰（ISI）和信道间干扰（ICI）消除方法。 它还将通过几门本科和研究生课程提供辅助领域的最新信息。 其中包括数字通信系统，差错控制编码，信息论和数据压缩，无线数字通信，多速率滤波器组和小波。 学生在迅速发展的多媒体通信领域得到良好的训练是至关重要的。 它已被证明，任何有限抽头ISI，可能有频谱零点（或频率选择性衰落）的特点，可以完全消除通过使用非最大抽取有限脉冲响应多速率滤波器组在前/后编码。 此外，已经示出预编码可以独立于ISI信道，并且因此反馈可以不是必需的。 在这项研究中，不仅ISI，而且在通信系统中的随机信道噪声被视为一个整体。 特别地，用于消除ISI的多速率滤波器组预/后编码和用于校正随机错误的传统错误保护编码被结合以实现比现有技术更好的性能。 该预/后编码技术也将被应用于减轻多用户通信系统（诸如无线移动的通信系统）中的ICI。