pn code造句

• Fast acquisition in pn code receiver with dsp fpga technology
  的扩频接收机快捕技术
• Performance analysis of ctl used for msk waveform pn code
  波形伪码码片跟踪环性能分析
• Long pn code parallel acquisition technology
  码并行捕获技术研究
• Short period pn code capture technique with self-jamming code
  存在自干扰码时的短周期伪码截获技术
• The catching time of pn code for ds-cdma
  伪随机码的捕捉时间
• A pn code phase acquisition with non-coherent sequential detection
  基于非相干序贯检测器实现的伪码捕获器
• Research and design of pn code sequence fast frequency hopping frequency synthesizer
  伪随机序列快速跳频频率合成器的研制
• Design of digital spread spectrum receiver ofa high dynamic and high pn code rate
  高动态高码速率全数字化解扩接收机的设计
• Improving dsss signal pn code phase measurement precision by 3-points quadratic interpolation
  码相位测量精度的三点二次插值法
• Performance of concatenated orthogonal pn codes for ds-cdma systems in correlated fading channel
  码直扩系统在相关衰落信道下的性能
• Rapid acquisition of long pn code with large doppler shift in low snr environment and its dsp platform
  大频移低信噪比下长pn码快速捕获及其dsp实现
• In time synchronization, we got better performance by the controlling of the polarity of training sequences using pn code
  时间同步方面,通过pn码控制训练序列极性,达到更好时间同步效果。
• To enhance the system reliability, the sample frequency of the digital correlator is four times as much as that of the pn code
  为了增加系统工作的可靠性，本系统采用4倍于伪码速率的采样频率。
• pn code synchronization algorithm based on serial-search acquisition scheme and delay-looked loop tracking is discussed in detail
  阐述了基于滑动相关捕获及延迟跟踪环跟踪的伪码同步技术的设计与实现。
• The transmitter unit mainly consisted of the dibit-to-serial conversion, differential encoder, pn code generator and qpsk modulator and so on
  发送部分主要有串并处理、差分编码、pn码扩频、qpsk调制等模块。
• The mainlobe-sidelobe characters of the pn codes are also discussed when modulated by the signals and carrier-doppler exsists in chapter 3
  本文第三章分析了存在载波多普勒、有符号调制时的周期伪随机序列的主旁瓣特性。
• The spread spectrum communication with an aperiodic pn code and under strong man-made jammers has an important significance in military communications
  强人为干扰环境下的非周期扩频码的扩频通信在军事上具有重要的意义。
• But the traditional method to capture the pn code are either too slow or too complicated to satisfy the need of today's communication system
  而传统的pn码捕获方法存在捕获时间长或电路结构复杂等缺点，普遍不能完成低信噪比下长pn码捕获的要求。
• Chapter 2 explain the base of mathematics, the mode of system, the principle of communication and the principle of pn code, and go along analysis of mathematics
  第二章是扩展频谱通信的数学基础、系统模型、通信原理和伪随机编码原理，并进行了数学分析。
• The lengths, numbers and orthogonality of the pn codes are important technologies . in the thesis we analyze the methods of spread spectrum transmission of wcdma
  伪码的长度，数量和正交性都是很重要的关键技术，同时也必须考虑在信道等变化时保证通信质量。