pulse position modulation造句
例句與造句
- Pulse position modulation ppm
脈位調(diào)制 - Pulse position modulation
脈沖位置燈 - Moreover , theory of the random pulse position modulation and random binary phase - coded ( rppm & rbpc ) pulse doppler is also discussed
在此基礎(chǔ)上，進(jìn)一步討論了隨機(jī)脈位調(diào)制加隨機(jī)二相碼調(diào)相脈沖多普勒雷達(dá)原理。 - By introducing oppm ( overlap pulse position modulation ) , the system ' s performances are improved also . 5 study wireless optical cdma system
通過引入oppm (重疊脈沖脈位調(diào)制)方式，進(jìn)一步提高了系統(tǒng)的傳輸效率。 - This system realize the chaos arithmetic directly by hardware and non - chaos synchronization communication by chaotic pulse position modulation technology
該系統(tǒng)直接用硬件實(shí)現(xiàn)混沌迭代算法，運(yùn)用混沌脈沖位置調(diào)制技術(shù)實(shí)現(xiàn)無混沌同步通信。 - It's difficult to find pulse position modulation in a sentence. 用pulse position modulation造句挺難的
- Random pulse position modulation ( rppm ) signal not only has good resolution of distance and velocity , but also has low probability of interception and strong properties of eccm
隨機(jī)脈位調(diào)制信號不僅具有良好的距離和速度分辨力，而且具有較低的被截獲概率和較高的抗干擾性能。 - Then we introduce pulse position modulation ( ppm ) using pn code and analysis its multi - access performance , system capacity and power spectrum density . on the basis of those analyses , we study the pulse shape and the anti - jamming ability of the system . at last , multiple access with pseudochaotic time hopping is introduce
本文首先闡述了uwb脈沖通信系統(tǒng)的基本原理，重點(diǎn)介紹了用偽隨機(jī)碼跳時(shí)的ppm (脈沖位置調(diào)制)調(diào)制，分析了他的多址性能、系統(tǒng)容量和功率譜密度，在此基礎(chǔ)上研究了改進(jìn)性能的發(fā)射信號形狀和系統(tǒng)抗干擾能力，最后介紹了偽混沌碼跳時(shí)的多址方式。 - 2 . applying manchester coding theory to meet the end of collision detection and codes judgment effectively . 3 . using pulse position modulation ( ppm ) coding theory that is invented especially for optical communication in the air to ameliorate the system ' s performance by improving the system ' s character of pe . 4 . taking good advantages of the fledged lan communication protocols and technologies to achieve a new method that has a high rate of capability to cost in building a wireless lan
論文研究中主要的創(chuàng)新性工作如下： 1 、提出利用光散射通信技術(shù)組建無線局域網(wǎng)，方便地實(shí)現(xiàn)了廉價(jià)而高速的局域網(wǎng)內(nèi)微機(jī)的光互連； 2 、采用曼徹斯特編碼技術(shù)解決了光無線通信中代碼判決和碰撞檢測的技術(shù)難題； 3 、針對空氣信道的特點(diǎn)，利用ppm編碼技術(shù)降低信道誤碼率、改善系統(tǒng)性能； 4 、在光無線局域網(wǎng)中利用現(xiàn)有的成熟有線局域網(wǎng)協(xié)議和技術(shù)，從而保證了系統(tǒng)的實(shí)用性及改善了系統(tǒng)的性價(jià)比。 - Chapter is the most important part in this paper , we used pulse position modulation ( ppm ) and maxim - likelihood demodulation to increase the power efficiency , improve the ber , also we used rs ( reed - solomon ) code to correct the bunched bit error because of the atmosphere scintillation . with the ppm modulation / ml demodulation method and rs code , the performance of the system improved to a new stage
第四章是對無線光接入的調(diào)制解調(diào)和編碼技術(shù)的分析，也是本文的重點(diǎn)，比較了ppm調(diào)制和ook調(diào)制的帶寬和功率利用率、硬判決解調(diào)和最大似然解調(diào)對系統(tǒng)性能的改善，以及采用rs糾錯(cuò)碼對系統(tǒng)性能的改善。 - Based on the theory of nonlinear dynamics system , this paper discusses the theory about wireless chaos security communications and its history and status quo of development , then emphasizes the new communication technology - chaotic pulse position modulation , and the realization of non - chaos synchronization wireless security communication system using the technology
本文以非線性動(dòng)力學(xué)系統(tǒng)理論為基礎(chǔ)，論述了無線混沌保密通信的相關(guān)理論及發(fā)展歷史和現(xiàn)狀，并著重講述了混沌脈沖位置調(diào)制( chaoticpulsepositionmodulation )這一新穎的通信技術(shù)，和利用此技術(shù)實(shí)現(xiàn)的無混沌同步的無線保密通信系統(tǒng)。 - The system has a good security and can prevent the pervasion of mistake code , has a well anti - jamming ability and so on . some substantial and groping work has been done in the process of using chaos security communication in pulse wireless system and the multi - access communication of chaotic pulse position modulation
系統(tǒng)具有很高的保密性，具有防誤碼擴(kuò)散，抗干擾能力強(qiáng)等特點(diǎn)，同時(shí)也為混沌保密通信應(yīng)用于脈沖無線電系統(tǒng)以及混沌脈沖位置調(diào)制的多址通信方面做了一些實(shí)質(zhì)性和探索性的工作。 - The paper contains all kinds of knowledge related to the system , including maxwell electromagnetic theory , pattern of optical radiation in space , channel model of atmosphere communication , computer communication protocols , wireless lan communication protocols , medium access control protocol , carrier sense multiple access / collision detection protocol , manchester coding theory , pulse position modulation coding theory and so on
主要包括： maxwell電磁理論；發(fā)送光場模型；空間信道模型；計(jì)算機(jī)網(wǎng)絡(luò)通信技術(shù)：無線局域網(wǎng)通信技術(shù)；媒體訪問控制規(guī)程( mac ) ；載波檢測多址接入碰撞檢測規(guī)程( csma cd ) ；曼徹斯特編碼與ppm編碼技術(shù)等。