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ECE259BN
- 由于Turbo码在接近Shannon极限的低信噪比下仍然能够获得较低的误码率，所以在近几年已成为编码理论界研究的热门领域，在第三代移动通信系统的开发中，Turbo码被普遍认为是高速数据信道的纠错编码方式。现在人们对Turbo码的主要研究包括编码器、交织器的设计及软输入、软输出迭代译码的算法。-This kind of codes has given rise to a large interest in the coding theory because of the can still aeh
BPSKhuatu
- 调制信号的识别，可以通过各种调制的功率谱不同来识别，但这种方法在小信噪比下，性能不好，通过循环功率谱来识别，仿真表明在小信噪比下有很好的性能-Identification of modulated signals can be modulated through a variety of different power spectrum to identify, but this method under low SNR, the performance is not good, through
ABlindEstimationAlgorithmforPNSequenceinDSSSSignal
- 这是一篇很好的有关信道估计的文章， 可以用来快速的了解信道估计的基本内容-In this paper, a method for fast blind estimation of DS-SS signal is proposed which aims at the Direct-Sequence Spread- Spectrum (DS-SS) signals with parameters unknown. Considering the characteristic th
WSD
- Based on the Duffing equation, a Duffing oscillator algorithm (DOA) to improve the signal-to-noise ratio (SNR) was presented. By simulated and experimental data sets, it was proven that the signal-to-noise ratio (SNR) of the weak signal could be gr
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- Under the condition of low SNR FSK signal modulation feature extraction
feixiangganjilei
- 针对宽带高分辨雷达体制下的未知速度运动目标检测问题, 基于高分辨一维距离像提出一种新的非相干积累算法. 首先利用改进的双向维特比算法估计目标速度及强散射点位置, 提高了低信噪比下 的估计精度, 然后在强散射点周围选取待检测单元进行非相干积累, 进一步提升了检测性能. 两类飞机实测数据的多个实验结果表明, 当目标发生距离走动的情况下, 该算法性能相对传统的非相干积累算法有明显的提高.-For unknown broadband speed moving target detection pro