| 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。 |
| 关键词: CDMA系统 多址干扰抑制 多用户干扰抑制 δ/θ相关解扩 |
| DOI： |
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| 基金项目: |
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| Analysis of δ/θ correlation despreading’s ability to suppress multiple-access interference |
| LONG De-hao,CHEN Zhi-qing |
| () |
| 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 cla
ssical 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 qu
asi-chaotic, m and Walsh) are performed δ/θ correlation despreading resp
ectively 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 corr
elation despreading in the conditions of given AWGN while the number of multiple
-access interference is 400,350 and 924,respectively. |
| Key words: CDMA system multiple-access interference suppression multi-user interference
suppression δ/θ correlation despreading |
