Design and Study of Signature Sequences For CDMA

CDMA签名序列的设计与研究

• 批准号: 9016077
• 负责人: P. Vijay Kumar
• 金额: $ 22.38万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-04-01 至 1994-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9016077&HistoricalAwards=false
• 关键词: Design; Study; Signature; Sequences; CDMA

The goal of the proposed research is the use of the extensive experience base of the investigator in sequence design to design and study code sequences for a code-division (spread-spectrum) multiple-access (CDMA) communication system. The primary interest is the case when four phase signalling (QPSK) is the modulation system. The distinguishing feature of the four phase case compared to the binary case is the symbol alphabet; the symbols in a four phase modulation alphabet form a ring and not a finite field. In the new design the work proceeds in a Galois ring. Relationships to previous results are developed. Understanding four phase sequences as well as as binary sequences are now understood is a long term goal.

拟议的研究的目的是将研究者的广泛经验基础在序列设计中使用，以设计和研究代码序列（传播）多访问（CDMA）通信系统。 当四个相信号（QPSK）是调制系统时，主要兴趣是这种情况。 与二进制案例相比，四个相的区别特征是符号字母。 四相调制字母中的符号形成环而不是有限场。 在新设计中，工作以galois戒指进行。 与先前结果的关系得到了发展。现在了解四个相序列以及二进制序列是一个长期目标。