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composite PN code 复合伪码
In this article, we propose a fast correlation algorithm of multiple PN code by Fast Walsh Transform (FWT). 本文提出了一种利用快速沃尔什变换(FWT)实现对复合码进行快速相关的算法。
PIC Microcom with wireless PN Code Generator Firmware source code with PIC21xx and Internal CLK has been tested. (译)：知情同意Microcom无线PN码发生器固件的源代码与PIC21xx和内部时钟已经过测试。
The mean square timing jitter performance of the CTL and the DTTL for MSK waveform PN code was analyzed in a wide range of symbol SNR. 仿真结果表明：在大信噪比条件下，数据转换跟踪环与码片跟踪环性能一致；
This paper presents a rapid acquisition scheme for PN code with double-channel by microprocessor controlled In-phase and Quad-phase CCD. 本文提出了一种以微处理机为控制器的电荷耦合器件(CCD)正交双通道PN码快速捕获方法,该方法能对不同码型、码长、码速率的PN码所调制的二相PSK直扩信号进行解扩,且具有体积小、重量轻、易于集成化、功耗低的特点。
The brief description of digital downconverter,acquisition of PN code phase, PN code phase tracking and data demodulating is given in this paper. 本文提出了一种高动态高码率数字化解扩接收机的设计方案，同时简要介绍了其数字下变频、伪码初相位捕获、伪码相位跟踪和数据解调的基本设计思想。
Computer simulation shows that this algorithm can get rapid PN code acquisition in very low SNR and is easy to be realized in FPGA and DSPs. 实验证明，这种捕获算法易于采用可编程门阵列和数字信号处理器相结合的方式实现，可以在极低的信噪比下实现扩频PN码的快速捕获。
For MSK waveform PN code, this paper adopts a novel Chip Tracking Loop (CTL) for PN code ranging, which is a modified Data Transition Tracking Loop. 本文针对MSK波形伪码，采用新型的码片跟踪环用于伪码时钟恢复。
This algorithm firstly calculates the average power serial, and then finishes the detection of PN code rate through the analysis of frequency spectrum and smooth processing. 该算法首先计算序列的平均功率，然后对其进行谱分析并作平滑处理而完成伪码速率的判定。
The mean square timing jitter performance of the CTL and the DTTL for MSK waveform PN code is analyzed and compared over a wide range of symbol SNR in this paper. 本文分析对比了不同码片信噪比条件下，数据转换跟踪环和码片跟踪环均方时序抖动性能。
Based on the estimated NBI eigen-waveforms and the PN sequences, NBIs can be rejected and the DS-SS signals despreading without the PN code can be realized too. 同时利用所估计的NBI特征波形可消除原始信号所夹杂的NBI，而利用所估计的PN码序列则可以对DS-SS信号实施盲解扩处理。
To despread and demodulate the signal correctly in the spread spectrum system, the PN code phase of the receiver must be synchronized with that of the input signal precisely. 在扩频通信系统中，为正确解扩和解调接收到的扩频信号，接收机的PN序列相位和接收信号的PN序列相位必须完全同步；
The project fulfills two of very important funcitons in a FH Communication system-the generation of PN code and the synthesizing of hopping frequencies, and unites them together efficiently. 该方案完成了跳频通信系统中极为重要的两个功能：伪随机码的产生和跳变频率的合成，并将它们有机地结合在一起。
Minimum Shift Key (MSK) waveform Pseudo-Noise (PN) code enters into the application of modern tracking, telemetry and control (TT&C) transponder and begins to replace square waveform PN Code. 摘要 MSK波形伪码在现代测控应答机测距中得到初步应用，开始取代方波伪码。
A new method of PN codes forecast is proposed in this paper based on the analysis of randomicity of PN sequences. 通过分析伪随机序列的伪随机性,提出了基于后验概率的伪码预测方法。
In this paper, the lowest for PILOT_INC and the minimum reusing distance of PN code are given.As an example, this paper also gives PN code assigning procedure of Gangdong CDMA trial network. 本文推导了PILOT－INC的最小取值、PN码最小的复用距离，并以实际建设的广东省CDMA试验网为例给出了PN码偏置的分配步骤。
Study the application of Digital Match Filter (DMF) in PN code synchronization, against the disadvantage of slippage correlation acquisition.Analyze how to achieve DMF on FPGA efficiently. 针对串行滑动相关法速度慢的缺点,研究匹配滤波器在扩频码同步上的应用,分析如何在FPGA上高性能实现匹配滤波器。
Under the conditions of optimal radices, this orthogonal PN codes can also apply to asynchronism CDMA communication systems. 在最优基条件下,使用该方法构造的正交pn码也可用于异步CDMA通信系统。
The simulation results demonstrate that the UKF algorithm has better performance than the EKE algorithm to treat the synchronization of the PN codes. 通过仿真实验，证明UKF算法在处理该类扩频信号的伪随机码的同步问题上具有更好的性能。
Since the FH pattern of the intercepted FH radio can not be known in advance, so the method of PN codes synchronization can not be used here for de-hopping and interception. 本文针对短波跳频电台信号的特点及短波波段电磁环境的特点，对短波跳频信号的解跳技术进行了分析研究。