| 摘要: |
| 通过对变换域通信系统的基函数生成算法的研究，在传统的使用一维伪随机（PN）序列对相位进行随机化方法的基础上，提出了一种新的基于随机幅度谱编码的算法用于基函数生成：用另一个一维PN序列与基函数的幅度谱向量进行点乘，对其随机化处理，该方法生成的基函数较传统的一维PN序列方法产生的基函数的随机性提高N（N为基函数长度）倍，大大增强了系统的抗截获能力和多址容量；最后对系统的误码率进行了仿真，验证了该方法可以提高多址通信时的系统性能。 |
| 关键词: 变换域通信系统 基函数 幅度谱编码 多址通信 |
| DOI： |
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| 基金项目:国家自然科学基金资助项目（61174194）；航空科学基金项目（20110196004） |
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| Performance analysis of amplitude spectrum coding based basis function generation algorithm |
| LI Kui,BAI Peng,LU Hu |
| () |
| Abstract: |
| The fundamental and basis function generation algorithm of transform domain communication system (TDCS) are analyzed firstly.On the basis of one-ary PN sequence phase randomization, the basis function generation algorithm based on amplitude spectrum coding is studied by using another one-ary PN sequence multiplied by the amplitude spectrum of basis function. The randomicity of this method is N(N is the length of basis function) times by that of traditional method,which will increase the ability of anti-intercepting and capacity of multiple access. The simulation results show that performance on multiple access communication BER(Bit Error Ratio) is better. |
| Key words: transform domain communication system basis function amplitude spectrum coding multiple access communication |
