CAJ | 학술논문

基于匹配滤波器的伪码捕获方法由于其速度优势在直扩通信系统中得到越来越广泛的研究和应用。数字匹配滤波器在基于软件无线电架构的数字通信系统中有很强的实用性。为提高伪码同步性能,提出了一种基于数字匹配滤波器的伪码捕获方法,主要针对载波多普勒频偏较小的应用场合。该方法保留了匹配滤波器捕获方法的速度优势,同时降低了虚警概率,提高了同步精度。该方法已成功应用于某系统。
기우필배려파기적위마포획방법유우기속도우세재직확통신계통중득도월래월엄범적연구화응용。수자필배려파기재기우연건무선전가구적수자통신계통중유흔강적실용성。위제고위마동보성능,제출료일충기우수자필배려파기적위마포획방법,주요침대재파다보륵빈편교소적응용장합。해방법보류료필배려파기포획방법적속도우세,동시강저료허경개솔,제고료동보정도。해방법이성공응용우모계통。
The pseudo-code acquisition method based on matched filter has been used and researched more and more widely because of its short acquisition time.In a digital communication system,especially a system based on a SDR（software defined radio） hardware structure,digital matched filter is very useful.In order to acquire better acquisition performance,an acquisition method based on digital matched filter is presented,which is suitable for occasions that the Doppler frequency is low.This method retains the advantage of matched filter in acquisition time,meanwhile,reduces the false alarm probability and has better precision performance.This method has been successfully used in a DS-SS system.