| 光同步CDMA多址干扰消除技术及其性能分析 |
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| 引用本文： | 李晓坪,郑露,吴诗其.光同步CDMA多址干扰消除技术及其性能分析[J].电子科技大学学报（自然科学版）,1999,28(5):455-460. |
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| 作者姓名： | 李晓坪 郑露 吴诗其 |
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| 作者单位： | 1.电子科技大学通信学院信息所 成都 610054 |
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| 基金项目： | 电子部"九五"预研基金 |
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| 摘 要： | 提出了一种简便易行的光同步CDMA多址干扰抑制方案。该方案采用修正的素数码,在每个用户的接收端设置一组相关器和一个排队网络。由于所采用的码的相关特性,这种算法利用了其他用户所包含的信息,对于发"0"时,能完全消除多用户干扰;对于发"1"时,除消除一部分干扰以外,可以大大减小误码概率。数值结果充分说明了这一点。
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| 关 键 词： | 光同步CDMA 多址干扰 修正的素数码 相关器 |
| 收稿时间： | 1998-12-27 |
Optical Synchronous CDMA Multiple Interference Cancellation Techonology and Performance Analysis |
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| Li Xiaoping,Zheng Lu,Wu Shiqi.Optical Synchronous CDMA Multiple Interference Cancellation Techonology and Performance Analysis[J].Journal of University of Electronic Science and Technology of China,1999,28(5):455-460. |
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| Authors: | Li Xiaoping Zheng Lu Wu Shiqi |
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| Affiliation: | 1.Institute of Communication and Information Engineering,UEST of China Chengdu 610054 |
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| Abstract: | In this papet, a simple optical synchronous CDMA multiple access interference surpress and cancellation scheme are proposed. The system uses modefied prime code(MPC). Each user is set a bank of correlator and the correlator's output power is queued in a network. Beacuse of the MPC's correlation characteristics, multiple user interference is surpressed. The algorithm can completely cancel multiple user interference when "0" signal is trasmitted. A part of multiple user interference cacelled as the remainder can enhance the user's signal power when "1" signal is trasmitted. The numerical results show that this method can decrease the BER greatly. |
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