| 摘要: |
| 通过对传输参考超宽带(TR-UWB)信号功率谱密度特性的理论分析，发现离散谱的消除和限波
带
的产生能有效降低对同频段其它无线通信系统的干扰。将参考部分随机化可以消除频谱中
的离散谱部分，并优选跳时码产生5.2 GHz频段的限波。仿真结果表明,通过这种方法离
散谱得以明显消除，5.2 GHz频段的限波对该频段其它通信系统的干扰降低了30 dB
以上。该方法简单灵活，改善后的频谱特性可以满足传输参考超宽带系统与其它无线通信
系统共存的需要。 |
| 关键词: 传输参考超宽带系统 功率谱密度 离散谱消除 限波带设计 共存通信 |
| DOI： |
|
| 基金项目:国家高技术研究发展计划(863计划) 项目(2007AA12Z238)；虚拟
地理环境教育部重点实验室开放项目(NS206005) |
|
| Improvement design of transmitted reference ultra-wideband signal power spectral density |
| ZHAO Hua,YIN Kui-xi,SHAO Jian-hua |
| () |
| Abstract: |
| Through theoretical analysis of the power spectral density of transmitted refere
nce ultra-wideba
nd(TR-UWB) signal,it is found that the discrete spectrum can be eliminated t
hrough the randomization of the signal′s reference and the 5.2 GHz limited
band
can be produced when the best time-hopping sequences are chosen, which effective
ly reduces TR-UWB′s interference to other wireless communication systems in the
same band. The simulation proves the two theoretical conclusions and even discov
ers that the 5.2 GHz limited band′s interference is decreased by over 30 dB
.
By simple and flexible means, the improved spectral is helpful to the coexi
stence of TR-UWB and other wireless communication systems. |
| Key words: transmitted reference ultra-wideband(TR-UWB) power spectral density eliminate
discrete spectrum generate limited band coexistence communication |
《电讯技术》编辑部 