摘要
在系统带宽一定的直接序列扩频系统中,不可能通过无限制地增大扩频增益提高系统的抗干扰容限,因此有必要引入其他的干扰抑制措施提高系统的抗干扰能力。介绍了传统的干扰抑制算法频域干扰抑制技术进行,提出了一种利用输出信噪比反馈进行自适应参数调整的置零陷波干扰抑制算法,并详细给出了算法的理论依据和算法流程。最后通过计算机仿验证了此算法恒优于传统频域干扰抑制算法中的几何平均门限法。
In the Dsss system of fixed bandwidth,it is impossible to raise the anti-interference tolerance of the system by infinitely increasing spectrum-spread gain,thus necessary to introduce other interferencesuppression measures and raise the anti-interference capability of the system.This paper proposes a signal-tonoise ratio（SNR） output feedback based adaptive parameter modification zero-set interference suppression algorithm.The theoretical analysis and algorithm flow chart are described in detail.And the computer simulation indicates that the performance of the proposed algorithm is better than the traditional geometric mean gate interference suppression algorithm.
出处
《通信技术》
2010年第4期46-49,共4页
Communications Technology
关键词
直接序列扩频
频域干扰抑制
自适应调整
最大输出信噪比
DSSS（Direct Sequence Spread Spectrum）
frequency-domain interference suppression
self-adaptive adjustment
maximum output
signal-to-noise ratio
