| TFM调制及其改进技术的研究 |
| |
| 引用本文： | 胡春筠,王卫星.TFM调制及其改进技术的研究[J].通信技术,2008,41(9). |
| |
| 作者姓名： | 胡春筠 王卫星 |
| |
| 作者单位： | 华南农业大学,电子信息工程系,广东,广州,510640 |
| |
| 摘 要： | 通过对TFM调制技术的研究,修正了其中预调制滤波器冲击响应波形g(f)在时间轴上的位置及其频谱G(w)的表达式.然后将TFM基带信号进行近似,即对TFM的相位路径进行进一步的控制,得到一个改进的TFM调制技术.改进后的TFM调制技术和原TFM调制技术相比,频带压缩能力提高了一倍,误码性能不变,但会出现3 dB的寄生调幅,需要提高发射机的发射功率.
|
| 关 键 词： | 受控调频 预调制滤波器 调制技术 |
TFM and Its Modified Technology |
| |
| HU Chun-yun,WANG Wei-xing.TFM and Its Modified Technology[J].Communications Technology,2008,41(9). |
| |
| Authors: | HU Chun-yun WANG Wei-xing |
| |
| Affiliation: | HU Chun-yun,WANG Wei-xing(Electronic , Information Department,South China Agriculture University,Guangzhou Guangdong 510640,China) |
| |
| Abstract: | In the light of studies on the principles of TFM technology,the author modifies the position of waveform of g(t),the impulse response of the pre-modulation filter on the time axis and the expression of G(w),the Fourier spectrum of g(t).Then the author develops TFM technology by approximating TFM base-band signals.Compared with the former TFM technology,the developed TFM technology can narrow the power spectra one time while keeps the same error rate.And however,3dB amplitude modulation is appeared and needs... |
| |
| Keywords: | TFM pre-modulation filter modulation technology |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
