| 摘要: |
| 依据时相调制信号的相关系数分析了其频分多址接入性能，导出了用户间载频差与相
关系数的解析关系表达式，可以发现：由于其调制信息包含在很宽的边带谱内，因此，时相
调制的频分多址接入需要较宽的信道划分，且多用户间的互扰效果会随着载波频率差而起伏
变化，不过，总的趋势是随着载频差的增大而减弱。分析结果为时相调制的频分多址方案设
计提供了理论基础。 |
| 关键词: 时相调制 频分多址 相位突变 超窄带 相关解调 |
| DOI： |
|
| 基金项目:国家自然科学基金资助项目（60902054）；中国博士后科学基金
资助项目(201003758, 20090460114)；山东省“泰山学者”建设工程专项经费项目 |
|
| Performance analysis of frequency-division multiple access for time-phase modulation |
| DENG Bing,WANG Xu,WANG Hong-xing,MAO Zhong-yang,LI Xiang-hui |
| () |
| Abstract: |
| The performance of frequency-division multiple access (FDMA) is analys
ed for time-phase modulation based on the correlation coefficient. The analytic
formula, which shows the relationship between the correlation coefficient and th
e di
fference of carrier frequency, is obtained. It can be found that wider band is
necessary for FDMA of time-phase modulation by reason of the modulated informati
on consisted in the very wide sideband. Moreover, the influence between multi-us
er will fluctuate versus the difference of carrier frequency, which diminishes a
s a whole when the difference of carrier frequency increases. The analysis resul
ts provide the theoretic base for FDMA scheme design. |
| Key words: time-phase modulation frequency-division multiple access phase jump ultra-narr
ow band correlation demodulation |
《电讯技术》编辑部 