| 摘要: |
| 在基于椭圆球面波的非正弦短波通信系统中，椭圆球面波脉冲信号原设计方法存在
计算量大、计算时间长的问题。为了解决此问题，提出了椭圆球面波脉冲信号快速设计方法
。该方法利用基于带通采样的椭圆球面波函数数值解法，求得椭圆球面波函数近似数值解，
椭圆球面波函数在时间轴上向右平移，可得椭圆球面波脉冲信号。理论分析和仿真结果表明
，快速设计方法能使计算量和计算时间降低2～4个数量级，同时椭圆球面波脉冲信号的时域
、频域和正交性能还能保持与原设计方法相当。 |
| 关键词: 无线通信 非正弦短波通信 信号设计 带通采样 椭圆球面波
函数 |
| DOI： |
|
| 基金项目: |
|
| Quick Design Method of Prolate Spheroidal Wave Pulse Signals |
| SHU Gen-chun,WANG Hong-xing,LIU Xi-guo |
| (Department of Electronic and Information Engineering, Naval Aeronautical and As
tronauticalUniversity, Yantai 264001,China) |
| Abstract: |
| In the system of nonsinusoidal shortwave(HF) communication based on prola
te spheroidal wave pulse signals (PSWPS), the original design method of PSWPS ha
s large computation work and long computation time problem. To solve the problem
, a quick design method of PSWPS is proposed. The approximate numerical value is
achieved by this method using prolate spheroidal wave functions (PSWF) based
on bandpass sampling. PSWPS can be obtained just by horizontally moving the PS
WF rightward along the time axis. Theoretical analysis and simulation results sh
ow that the quick design method can effectively reduce the calculation work and
comp
uting time. In the meantime, the performance of time domain, frequency domain an
d or
thogonalization of PSWPS is almost the same as the original design method. |
| Key words: wireless communication nonsinusoidal HF communication signal design bandpass
sampling prolate spheroidal wave function(PSWF) |
《电讯技术》编辑部 