【摘要】 龙德浩、陈志清提出的δ/θ型基带相关检测/解扩方案(《电讯技术》2012年第9期1438-1442页),相对于经典相关解扩,其计算量减少了99.61%,且抗干扰能力较强,但定量分析不足。鉴于此,基于大数定理,分别对VIVS准混沌、m和Walsh等3种扩频码阵列进行了仿真相关解扩。结果表明:在给定AWGN条件下,当多址干扰分别为400条、350条和924条时,δ/θ相关解扩较经典相关解扩的BER减小了2~3个数量级。更多还原

【Abstract】 The computation burden of δ/θ base band correlation detection/despreading scheme proposed by LONG De-hao and CHEN Zhi-qing in Telecommunication Engineering(No.9,2012,Page 1438-1442),is reduced by 99.61% relative to the classical correlation detection/despreading,and its anti-interference ability is stronger,but quantitative analysis is insufficient in that paper.In view of this,based on the law of large numbers,three spreading code arrays(VIVS quasi-chaotic,m and Walsh) are performed δ/θ correlation despreading respectively through simulation,and the results show that the BER of the δ/θ despreading is reduced 2 to 3 orders of magnitude relative to the classical correlation despreading in the conditions of given AWGN while the number of multiple-access interference is 400,350 and 924,respectively.更多还原