pseudo noise中文什么意思

例句与用法

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1. After having estimated some signal parameters , it is an important approach to despread the dsss signal and recover the primitive information by estimating the spreading sequences . therefore the research on blind estimation of pn ( pseudo noise ) sequences shows the vital urgency and significance at present
   在检测和估计出直扩信号的参数后,要恢复原始信息,估计出扩频序列是重要的途径之一,因而对ds信号扩频pn ( pseudonoise )码的估计研究就具有迫切性和重要意义。
2. After observing the correlative of pseudo noise code , we analyse the main cause of multi - access interference , and build the receiving model of multiuser system . in the thesis the optimum multiuser detectors with minimum probability of error and the near - optimum detectors are intrduced , and then pic multiuser detection is improved on
   介绍了最佳多用户检测器和次最佳多用户检测器，并对现有一些并行干扰抵消多用户检测器进行了介绍并提出了改进的措施。对采用改进的算法的系统用montecarlo算法进行了误码性能分析。
3. The author first analyzed spread spectrum technology that is used extensively in short - range wireless communications , and discussed some pseudo noise codes " application in spread spectrum technology . then it gave wireless transceiver ' s detailed block diagram in the physical layer . the author also introduced main chip ' s operating theory which is used in this system
   本系统在无线收发部分采用dsss技术，工作在2 . 4ghzism频段，本文首先介绍了在短距离无线通信中广泛应用的扩频技术，讨论了几种伪随机码在扩频通信中的应用，然后给出了本系统中物理层所用的硬件电路的框图，介绍了所用芯片组的原理。
4. The generating programs of m series and band - limited pn ( pseudo noise ) series are designed based on the research of correlative arithmetic . according to the testing principle and parameter characteristic of echo signal , decimation filter and digital correlator group are provided . the function of target detection and speed measurement is also provided in dsp software
   在研究相关算法的基础上,开发了m序列和带限pn序列的产生程序;根据回波信号的检测原理及其参数特性,设计了选抽滤波器和数字相关器组,并在dsp软件中实现了目标检测和测速功能。