通信碼 的英文怎麼說
中文拼音 [tōngxìnmǎ]
通信碼
英文
communtcations codes-
On the demand of application and according to the soluhons menhoned above, a method of displacement waiting auto - sy ' nchronizing is put forward, which is based on match filters. at the end a complete and speeflc set of hardware circuits and software programs which haplements the scheme, is also presented in the ancle. the synchronization system was tested in the pool and in the shallow wate near m port, the result of the test shows that its performance is satisfactory
論文著重介紹實現了跳頻通信系統同步的一般方法,並詳細分析和對比跳頻同步系統的捕獲方案,在此基礎上,提出了一個基於匹配濾波器的位移等待式自同步方案,設計、完成並給出了詳細硬體連線電路圖、軟體程序流程圖和部分程序清單,該自同步方法在實驗室水池實驗取得良好的效果,並在廈門港海域進行了現場實驗測試,具有較低的誤碼率和一定的檢測概率,結果令人滿意。The spread spectrum communication with an aperiodic pn code and under strong man - made jammers has an important significance in military communications
強人為干擾環境下的非周期擴頻碼的擴頻通信在軍事上具有重要的意義。Wireless features : calling number identification restriction
無線電通信特徵:呼叫號碼識別限制Wireless features : calling number identification presentation
無線電通信特徵:呼叫號碼識別顯示The hardware of the ip phone codec to be designed is based on the fixed point digital signal processor ( ti ' s tms320vc5410 ) while the compression and decompression core in the software of dsp is based on the itu - t vg. 729a. ip phone codec carryout the task of collecting / playing - back. coding / decoding of speech signal and communication with embedded cpu. etc
該語音編解碼器的硬體基於tms320vc5410 ,編解碼演算法遵循itu - tg . 729a協議,能夠實現語音信號的採集/回放、編碼/解碼以及同嵌入式cpu通信等功能,在8kbit / s的碼率下能夠提供獲得良好的語音質量。On the base of researching the theory of the scheme and analyzing the signal feature, it is obtained that the existence manners and character of distance information in the differential frequency signal. at the same time, a new conclusion is gained that the technology of frequency agility can decrease the constant error of system. it is also to say that frequency agility and frequency modulation fixed - distance fuze has the similar feature to random period frequency modulation fixed - distance fuze. according to the theory of address coding in the hopping - frequency communication, the paper presents the principle of selecting the frequency agility sequence which fit to the radio fuze and constructs the frequency agility sequence family based on the rs codes
在深入研究方案原理和分析信號特徵的基礎上,獲得了該體制引信差頻信號中,距離信息的存在形式和特點,得出了頻率捷變技術的引入降低了系統定距固定誤差這一新的結論,即頻率捷變調頻定距引信在定距性能上具有類似隨機周期調頻定距的特徵。本文引入跳頻通信地址編碼理論,結合無線電引信的具體特徵,提出了適用於無線電引信的頻率捷變序列的選擇原則,並構造了基於rs碼的寬間隔頻率捷變序列族。Major products and services of the company cover satellite communication equipment, mobile communication products, hf communication system, ctv sets, personal digital entertainment products, electronics manufacturing, instruments and meters, production equipment, software services and system integration
公司主要產品和服務包括:衛星通信設備移動通信設備短波通信設備彩電個人數碼娛樂產品電子製造儀器儀表大生產裝備軟體服務系統集成等。Lc apparatus almost meet all the needs of space optical communication such as weight, size, power consume, life, cost, driving voltage, intergration of optics and electricity, programe, optically take ? over aperture, beam scanning, deflexional range and so on. switches, deflexional facilities and scanning equipments which made with lc have been used in the system of labor in space communication. the only bug of lc apparatus is that their answer speed only get microsecond rate or submicrosecond rate. but it is practical for them to be used in special beam capture, scan, deflexion controling which don ’ t concerned with code rate and code type
液晶器件幾乎滿足空間光通信的所有大的指標要求如重量、尺寸、功耗、壽命、成本、驅動電壓、光電集成、可編程性、光學接收孔徑、光束掃描和偏轉范圍等等。液晶光開關、光偏轉器、光掃描器已經開始應用於光纖通信的實驗系統中。液晶類器件應用於光通信的唯一重大缺陷,是其響應速度目前只能達到微秒級或亞微秒級,不過,在不涉及到碼型碼率的空間光束捕獲、掃描、偏轉、控制方面,液晶器件完全可能進入實用化。500 khz : this is an international ship calling and distress frequency for maritime communications in morse code
500千赫:這是一艘國際船要求和求救頻率海通信在摩爾斯電碼。At last this module is synthesized using 6s06dpdm technology library. 3, the algorithm used in key module to the performance of data security is thoroughly analyzed. considering both performance of enciphering and degree of complexity of realization, steam cipher algorithm is used
3 、對數據通信安全性起決定作用的加密模塊所採用的加密演算法進行了深入的分析,綜合加密性能和實現的復雜度的考慮,採用了流密碼的加密演算法。In all kinds of complicated network, oriented linking and unlinking, communication frequency resource is strained, and bandwith to transmitting audio frequency signal is too restricted, complicated and fluky, while audio frequency data exponential have been increased in the last several years. under the circumstances, based on the research of predecessor, this paper studies wavelet analysis ' s maths gist and practices significance on signal process, and puts forward a optimized wavelet package condensation arithmetic to process audio frequency data, which gives attention to coding efficiency, multirate and compression delay. simulation experiment on the arithmetic has been done by matlab
針對無連接和面向連接的各種復雜網路環境下,通信頻帶資源緊張,音頻傳輸帶寬有限且復雜多變,而各種音頻數據又日益增多的局面,本文研究小波分析在信號處理方面的數學依據和在數據壓縮方面的實際意義,在前人不斷工作的基礎上,提出了一種優化小波包變換編碼方案用於音頻數據的壓縮演算法,兼考慮了編碼效率、多碼率和壓縮時延多個方面,並在matlab環境下做了模擬實驗,對各種音頻信號及多種小波函數做了模擬結果比較,實驗結果證明該演算法可以在一定計算復雜度下可以很好地改進壓縮效果,達到多碼率下實現實時編解碼的過程,在高速dsp晶元等硬體設備支持下,可以有效應用於實際復雜多變信源編碼。Design and realization of error code measuring system in fso
的數字通信誤碼測試系統設計The plan can generate lots of ss codes, so that it can solve the contradiction between limited bandwidth and infinitude requirements of increasing customers in present communication system and it has ability of secrecy too
並能夠產生大量的擴頻碼地址,可較好的解決現行通信系統中有限帶寬與日趨增加的無限用戶需求之間的矛盾。The knowledge, which the agent transmits and shares, and the communication language which the agent uses are coded with xml / rdf, and the container can provide transforming service between xml / rdf and kqml / acl / kif
對于主體所傳輸和共享的知識以及主體所使用的通信語言統一用xml rdf進行編碼,並且容器可提供相應的服務用於在xml rdf與kqml acl kif之間進行轉換。The design built the wireless lan application platform with the modes of switching in the wireless lan and bar - code scan technology of wireless hand terminal ; made ap switch in warehouse exchanger by lineate method to get in lineate lan of the corporation, and joined the wireless lan into lineate lan by the wireless hand terminal communication to ap with protocols
整個硬體環境設計採用了無線網路接入方式和無線手持終端、條碼掃描技術建立無線網路應用平臺, ap以有線方式接入立體倉庫交換機與企業有線網路接通,無線手持終端通過協議與ap通信實現無線網路與有線網路連通。In this thesis, firstly, we put forward a new algorithm of the synchronization of carrier reference phase, that is to use the curve synthesizing with the general digital carrier phase looper to have an estimation on carrier frequency within 10 ms so as to meet the need of meteor burst communication. we have done some simulations to get the performance of carrier frequency estimation using two modulation modes ( 16qam and 4 - qpsk ), and had some test on the carrier phase looper in conditions when using different baud rate transmission and when the baud tuning have windage
我們對兩種正交調制方式( 16qam和4 - qpsk )進行了模擬工作並給出了模擬結果,同時討論了碼元同步定時誤差對鎖相環路工作的影響並根據流星通信中使用變速率傳輸時鎖相環路的載波同步性能進行了測試;然後在基於軟體無線電思想的數字處理平臺(該數字處理平臺實現了中頻數字化)上用dsp軟體完成了載波的相位跟蹤。Though maximum likelihood detection ( mld ) can obtain optimum detection performance in mimo communication systems, the ergodic search increases the complexity exponentially with the number of the antennas, which lead to implemental difficulty
在mimo通信系統信號檢測中,最大似然檢測( mld )可以獲得最佳的誤碼性能,然而遍歷式搜索方式使得mld的計算復雜度隨天線數呈指數形式遞增,在實際系統中,往往難以實時實現或者不能實現。As a combination of ofdm with space - time coding technique, mimo - ofdm becomes more and more important in the future wireless communication systems, the mimo - ofdm system can not only effectively enhance the transmission rate and capacity of the wireless communication system but also greatly mitigate the effections of mufti - path fading and interfere
Mimo - ofdm技術將ofdm與空時編碼技術有機的結合在一起,能夠大幅度的提高無線通信系統的通道容量和傳輸效率,並能有效的抵抗多徑衰落、抑制干擾和噪聲。It also discusses the capture of communications code type as well as and the identification and use of differential manchester
並對通信碼型的獲得,差分曼徹斯特碼的識別、應用進行了探討。Spread spectrum technique is brought forward originally in military communication for antijam and low probability of intercept. it ' s capability in security and antijam makes its expensive applications in the fields of communication and detection. application in multiple access communication techniques accelerates nowadays - 3g technique
擴頻技術最早是在軍事通信中為了抗干擾和降低截獲概率而提出來的,它的保密、抗干擾性能使它在通信和探測領域得到廣泛的應用,擴頻技術應用於多址通信(碼分多址)使得當今的移動通信和3g通信等技術得以快速蓬勃的發展。分享友人