摘要
主要对LA、LS和LAS码的设计进行理论阐述,并对其相关函数进行M atlab仿真,仿真结果显示,LAS码有着“零干扰窗”的优良特性,在该窗口内,自相关函数为一脉冲峰值,而互相关函数为零.这将有助于减少码间干扰、多用户干扰和接入干扰等,从而揭示了LAS码的优越性能.
The paper mainly studies the designs of LA, LS and LAS codes. Then it makes matlab simulation for their auto- correlation functions and cross-correlation functions. Simulation and analysis show that, LAS code has zero cross-correlation in the ＂Zero Interference Window＂, and has only an impulse auto-correlation, and these excellent features help to eliminate ACI, MAI and ISI. So it has more large potential than traditional codes.
出处
《天津理工大学学报》
2006年第5期25-27,共3页
Journal of Tianjin University of Technology
基金
天津市科技发展计划项目(05YFSYSF033)
关键词
LA码
LS码
LAS码
自相关函数
互相关函数
LA code
LS code
LAS code
auto-correlation function
cross-correlation function
