| Ricean衰落信道下一种正交多载波CDMA系统的性能 |
| |
| 引用本文： | 周武旸,朱近康.Ricean衰落信道下一种正交多载波CDMA系统的性能[J].电子学报,2000,28(Z1):8-11. |
| |
| 作者姓名： | 周武旸 朱近康 |
| |
| 作者单位： | 中国科学技术大学个人通信与扩频实验室, 合肥 230027 |
| |
| 基金项目： | 国家973项目(No.G1998030408) |
| |
| 摘 要： | 本文提出了一种新的多载波码分多址(MC-CDMA)系统.与传统系统相比,其主要区别是采用多个并行MC-CDMA分支,每一个分支用一组正交子载波进行调制.在每个分支上,使用相同扩频序列的不同码片调制子载波.这种系统能更有效地利用传输带宽,实现频率分集.由于该系统降低了每个子载波上的数据速率,扩频序列更容易同步.最后给出了系统在Ricean衰落信道下的性能分析.
|
| 关 键 词： | 多载波 码分多址 Ricean衰落信道 |
| 收稿时间： | 2000-06-05 |
Performance of Orthogonal Multicarrier CDMA System in Ricean Fading Channel |
| |
| ZHOU Wu-yang,ZHU Jin-kang.Performance of Orthogonal Multicarrier CDMA System in Ricean Fading Channel[J].Acta Electronica Sinica,2000,28(Z1):8-11. |
| |
| Authors: | ZHOU Wu-yang ZHU Jin-kang |
| |
| Affiliation: | PCN & SS Lab., University of Science and Technology of China, Hefei 230027, China |
| |
| Abstract: | In this paper,a new multicarrier CDMA system is proposed.Compared with the conventional MC-CDMA system,the main difference is that the new system uses multiple parallel branches,each of which is modulated using a group of orthogonal subcarriers.Note that on each orthogonal subcarrier branch,transmitted data bit after serial to parallel conversion is modulated with a chip of a PN sequence,and not a whole PN sequence.This system can utilize the transmission bandwidth more efficiently and achieve frequency diversity.Furthermore,this system lowers the data rate of each carrier branch,so it is easier to make PN sequence synchronized.The performance of the system is analyzed in a Ricean fading channel. |
| |
| Keywords: | multicarrier CDMA Ricean fading channel |
|
| 点击此处可从《电子学报》浏览原始摘要信息 |
|
点击此处可从《电子学报》下载全文 |
|
