| 基于扩频与跳频的多带OFDM-UWB多址技术 |
| |
| 引用本文： | 张士兵,张力军.基于扩频与跳频的多带OFDM-UWB多址技术[J].信号处理,2006,22(6):769-773. |
| |
| 作者姓名： | 张士兵 张力军 |
| |
| 作者单位： | 1. 南通大学,电子信息学院,江苏,南通,226007;南京邮电大学,通信与信息学院,江苏,南京,210003
2. 南京邮电大学,通信与信息学院,江苏,南京,210003 |
| |
| 基金项目： | 国家高技术研究发展计划(863计划);江苏省高校自然科学基金 |
| |
| 摘 要： | 根据多带OFDM-UWB通信系统的特点,提出一种基于扩频与跳频的多址技术。该多址技术将多载波码分多址和跳频多址相结合,构成一种新颖的多址技术-正交频分多址(OFDMA),实现多载波码分多址技术和跳频多址技术的优势互补,此接收机的复杂性明显小于常规时频码的多用户接收机。仿真结果表明,基于OFDMA多址技术方案的UWB系统在系统误比特率性能上优于常规时频码方案约5dB。
|
| 关 键 词： | 超宽带 多址技术 扩频 跳频 |
| 修稿时间： | 2005年10月12 |
Multiple Access Based on Spreading and Frequency-Hopping in Multi-band OFDM-UWB System |
| |
| Zhang Shibing,Zhang Lijun.Multiple Access Based on Spreading and Frequency-Hopping in Multi-band OFDM-UWB System[J].Signal Processing,2006,22(6):769-773. |
| |
| Authors: | Zhang Shibing Zhang Lijun |
| |
| Abstract: | According to the characteristics of multi-band orthogonal frequency-division multiplexing ultra-wideband system, a multiple access based on spreading and frequency-hopping is proposed. It combines multi-carrier code division multiple access ( MC-CDMA) with frequency hopping multiple access (FHMA) and forms a novel multiple access techniques; orthogonal frequency division multiple access (OFDMA) . This makes full use of the advantages of MC-CDMA and FHMA. The complexity of the UWB system using OFDMA is less than that using time frequency code. Simulation results show that the OFDMA has the advantages in bit error rate performance over time frequency code multiple access about 5 dB. |
| |
| Keywords: | ultra-wideband multiple access techniques spreading frequency-hopping |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
