| TDD OFDM系统中下行链路多址接入方式性能分析 |
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| 引用本文： | 张靖,黎海涛. TDD OFDM系统中下行链路多址接入方式性能分析[J]. 真空电子技术, 2004, 0(6): 26-28 |
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| 作者姓名： | 张靖 黎海涛 |
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| 作者单位： | 1. 中国电子科技集团公司电子科学研究院,北京,100041
2. 清华大学,电子工程系,北京,100084 |
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| 摘 要： | 对应用于OFDM系统下行链路的几种多址方式,TDMA、FDMA和CDMA进行了比较分析.研究表明,在系统用户数和速率相同时,采用CDMA多址方式的OFDM系统误比特率性能优于TDMA和FDMA.在时分双功(TDD)方式下,发射机已知信道增益时,最优子载波分配的FDMA OFDM系统性能优于其他多址技术.
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| 关 键 词： | 多址 正交频分复用 下行链路 |
| 文章编号： | 1002-8935(2004)06-0026-03 |
| 修稿时间： | 2004-05-25 |
Performance Analysis of Multi Access Scheme for OFDM Downlink |
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| ZHANG Jing,LI Hai-tao. Performance Analysis of Multi Access Scheme for OFDM Downlink[J]. Vacuum Electronics, 2004, 0(6): 26-28 |
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| Authors: | ZHANG Jing LI Hai-tao |
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| Affiliation: | ZHANG Jing~1,LI Hai-tao~2 |
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| Abstract: | The performance comparison of several multi access OFDM schemes was studied, including time division, frequency division, and code division. The study shows that code division is an effective technique in frequency selective channel. In addition, frequency division with optimal sub-carrier allocation is shown to outperform other multi access techniques when the transmitter has knowledge of the channel state information. |
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| Keywords: | Multi access OFDM Downlink |
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