| 基于多带复小波的多载波DS-CDMA及性能 |
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| 引用本文： | 虞湘宾,毕光国.基于多带复小波的多载波DS-CDMA及性能[J].应用科学学报,2004,22(2):144-148. |
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| 作者姓名： | 虞湘宾 毕光国 |
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| 作者单位： | 东南大学移动通信国家重点实验室 江苏南京 210096 |
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| 摘 要： | 在分析多载波DS-CDMA (MC-DS-CDMA)的基础上,利用优化生成的多带复小波,提出一种新的基于多带复小波的多载波DS-CDMA,研究了其在瑞利衰落信道下的误码率性能.并采用空间分集合并(SDC)技术进一步完善其上行链路性能.理论分析和仿真结果表明该系统要优于通常的MC-DS-CDMA和基于实小波包的MC-DS-CDMA,具有良好的抗衰落能力;且基于SDC技术的该系统能显著增强系统抗多径干扰和多址干扰的能力,具有较低误码率.
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| 关 键 词： | 直接序列码分多址 空间分集合并 多带复小波 多载波技术 |
| 文章编号： | 0255-8297(2004)02-0144-05 |
| 收稿时间： | 2003-01-07 |
| 修稿时间： | 2003-05-07 |
The Performance of MC-DS-CDMA Based on the Multi-band Complex Wavelet |
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| YU Xiang-bin,BI Guang-guo.The Performance of MC-DS-CDMA Based on the Multi-band Complex Wavelet[J].Journal of Applied Sciences,2004,22(2):144-148. |
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| Authors: | YU Xiang-bin BI Guang-guo |
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| Institution: | National Mobile Communications Research Lab, Southeast University, Nanjing 210096, China |
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| Abstract: | In this paper, through analyzing the principle of MC-DS-CDMA, we propose a novel multi-band complex wavelet based on the MC-DS-CDMA system by adopting the optimized multi-band complex wavelet. We also investigate the system bit error rate (BER) performance in the multi-path Rayleigh fading channel. Meantime, the space diversity combining (SDC) technique is exploited to further perfect the system's performance. Simulation results show that the proposed system outperforms the conventional MC-DS-CDMA and the real wavelet packet based MC-DS-CDMA, it has superior capability against fading. The proposed SDC-based system with lower BER can significantly strengthen the capability to combat multi-path interference and multi-access interference (MAI). |
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| Keywords: | multi-band complex wavelet DS-CDMA multi-carrier technique SDC |
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