Golomb Costas序列的结构及其在OFDM系统中的应用  

Constructions of Golomb Costas arrays and their applications in OFDM systems

作　　者：姚建国[1] 王玉峰[1] 衡伟[2] 

机构地区：[1]南京邮电大学江苏省无线通信重点实验室,江苏南京210003 [2]东南大学移动通信国家重点实验室,江苏南京210096

出　　处：《通信学报》2013年第7期1-13,共13页Journal on Communications

基　　金：国家自然科学基金资助项目(61171092)~~

摘　　要：研究了用循环移位法获得的Golomb Costas序列族的特性,建立了含有一个间隙行和一个间隙列的GolombCostas序列的结构理论,深入研究了含有一个间隙行和一个间隙列的Golomb Costas序列的代数结构、构造方法和自(互)相关特性,并证明了相关的定理。探索了用含有一个间隙行和一个间隙列的Golomb Costas序列设计OFDM系统中跳频图样的方法,举例说明了如何设计跳频码和怎样将跳频码分配给OFDM系统中的用户。用含有一个间隙行和一个间隙列的Golomb Costas序列设计跳频码能获得理想的自相关特性,并且当无线通信系统中多普勒频移受限时能获得极佳的互相关性能。Theory of structures of Golomb Costas arrays with 1-gap row and 1-gap column was established with the study of the properties and mathematical models of Golomb Costas arrays and their families which are obtained by the cyclic shift method. By conducting a number of researches on the algebraic constructions and the auto- and cross-correlation properties of Golomb Costas arrays with 1-gap row and 1-gap column, certain theorems were confirmed. The design of frequency hopping codes and the distribution of them to the users were illustrated while the design of frequency hopping patterns was explored in OFDM system with Golomb Costas arrays with 1-gap row and 1-gap column. By designing fre- quency hopping codes with Golomb Costas ayrays with 1-gap row and 1-gap column, an algebraically constructed fre- quency hop code family can achieve ideal auto-correlation properties. And excellent cross-correlation performance can be obtained when the Doppler shifts are restricted in a wireless communication system.

关 键 词：Golomb COSTAS序列 互相关函数 循环移位 正交频分复用 跳频图样 

分 类 号：TN929.5[电子电信—通信与信息系统]