擾碼檢測 的英文怎麼說

中文拼音 [rǎojiǎn]
擾碼檢測 英文
code violation detection
  • : Ⅰ動詞1 (擾亂; 攪擾) harass; trouble 2 (客套話 因受人款待而表示客氣) trespass on sb s hospital...
  • : Ⅰ名詞(表示數目的符號或用具) a sign or object indicating number; code Ⅱ量詞1 (指一件事或一類的...
  • : Ⅰ動詞1 (查) check up; inspect; examine 2 (約束; 檢點) restrain oneself; be careful in one s c...
  • : 動詞1. (測量) survey; fathom; measure 2. (測度; 推測) conjecture; infer
  • 檢測 : check; detection; test; gauging; detecting; sensing; [工業] checkout; measuring
  1. 8b / 10b encoding adapt the characteristic of fiber channel very well, it has been used in high - speed fiber transmission broadly. it avoids the appearance of continuous “ 1 ”, “ 0 ”, offers plenty of bit synchronization time information, enhances the stability of output light signal, reduces interference between signals and offers proper redundancy to check error through transmission

    它避免了連「 1 」 、連「 0 」的出現,提供了豐富的位同步定時信息,減少了直流基線漂移,提高了光輸出功率的穩定性,減少了高低頻分量,改善了信號間的串,提供了適當的冗餘,便於系統傳輸中帶來的錯誤。
  2. Traditional multiuser detector make good use of all signals which resuilt in multiple access interference so that it provides optimum mai resistance. ( 1 ) nevertheless, it assumes that the receiver can acquire the signature waveform and timing of desired user and the interfering users ; ( 2 ) it has no ability to suppress intercell multiple access interference ; ( 3 ) it cannot be applied in downlink channels. adaptive multiuser detector eliminates the need to know the signature waveforms and the timing of the interferes and has to need training data sequences for every active user

    傳統多用戶在單用戶技術基礎上,充分利用造成多址干的所有用戶的信息進行聯合,從而具有良好的抗多址干能力,但存在一些缺陷: ( 1 )不僅要求知道期望用戶的地址pn及其定時信息,還要求其他干用戶的地址pn及其定時信息; ( 2 )不能消除其他相鄰小區的多址干對本小區的影響; ( 3 )不能直接應用在cdma移動通信系統中的下行鏈路。
  3. Secondly, we propose a multi - user detection based on kurtosis. this method can suppress not only mai ( multiple - access interference ) but also isi ( inter - symbol interference ). all needs in the detection are only the desire user ' s spreading code

    並在此基礎上,提出了一種基於峭度的盲方法,這種方法不但可以抑制多址干mai ( multiple - accessinterference ) ,還可以抑制符號間干isi ( inter - symbolinterference ) ,而且在時只需要期望用戶的擴頻信息,是一種全盲方法。
  4. Although the long pn sequence modulation has been used widely in the military communication with the good secrecy performance and restraint of jam between symbols, there is scarcely any research of long pn sequence modulation signals. so it is significant to research the estimation of long pn sequence modulation signals

    由於目前尚未有對長pn調制信號進行和參數估計的研究,而長調制較好的保密性能以及抑制部分符號間干的優點,使其在軍事通信中有著較好的應用前景,因而此部分工作具有重要的意義。
  5. By analysis, using this the technology, true mode s preamble will be detected correctly, pick up respondent information, process the data, in the case of high fruit ( mode a / c fruit ) environments

    經分析,該應答技術能夠在高幹率( a / c模式的信號干)環境下正確地真實的模式s報頭脈沖,提取應答代,進行應答信號的處理。
  6. Detection performance and anti - jamming capability of phase - coded radar are also analyzed in this paper. the computer simulation shows that phase - coded radar has better property of suppressing jamming such as shortwave, gauss noise and binary phase code than lfm radar

    本文還分析了相位編雷達的性能和抗干能力,模擬結果顯示相位編雷達抗短波、高斯白噪聲、二相等干的能力優于線性調頻雷達。
  7. We analyzed the anti - jam and band inside anti - interfere performance of the system, and the low probability intercept ( lpi ) of the traditional direct sequence spread spectrum ( dsss ) modulations in the uav platform ' s applications. so a new modulation technique using a multi - level pseudo noise ( pn ) code has been presented. the new multi - level pn code is built from a high speed pn code through a low passed filter ( lpf )

    分析了系統抗阻塞式干和抗帶內頻帶干的性能,以及常規bpsk qpsk - dsss調制在無人機通信中存在的安全隱患,提出了一種用多電平pn進行擴頻調制的方法:採用高速pn,經過低通濾波器,產生多電平pn進行直序擴頻調制,能在低信噪比情況下有效抵抗平方率器對系統載波的
  8. A kind of mud based on transversal equalizer is recommended, and the performance analysis of ds - cdma systems based on that mud has been done under synchronous channels. then the expression of output signal is deduced. also, the relations among sinr of output signal, snr and correlation matrix of spread code the least mean square error ( lms ) adaptive algorithm is applied to the mud

    論文引入基於橫向均衡結構的多用戶器,用矩陣方法推導了awgn通道下、同異步系統中信號輸出表達式,依據最小均方差準則,討論了同步方式下器的輸出信號干比與信噪比、擴頻相關陣以及用戶功率大小等因素間的關系。
  9. A kind of mssr mode s plot extractor system based on fpga + dsp architecture is introduced in this paper. this system adopt three algorithms to get information of mode s reply correctly in high dense a / c jamming environments, which are preamble detecting algorithm, codes getting algorithm based on multi - samples and multi - parameters, and error detection and correction algorithm based on confidence analyzing

    本文介紹了一種基於fpga + dsp架構的模式s應答接收機數字處系統。該系統採用三種創新演算法來實現高密度模式a / c干環境下的模式s應答信息接收功能,包括報頭演算法、多采樣點多參數的代拾取演算法以及基於置信度分析的糾錯演算法。
  10. 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

    介紹了最佳多用戶器和次最佳多用戶器,並對現有一些并行干抵消多用戶器進行了介紹並提出了改進的措施。對採用改進的演算法的系統用montecarlo演算法進行了誤性能分析。
  11. Conventional detector ( single - user matched filter ) distinguishes each user by the crosscorrelation of their spread - spectrum codes. in practice, however, its performance is much deteriorated due to the existence of noise in channel and strong multi - access interference, i. e. near for effect. a new method using independent component analysis is proposed in this paper. the - received energy of signals is controlled effectively, thus the near - far effect is overcome as much as possible ; moreover, the effect that noise imposed on the detector is mostly reduced. simulations verify the effectiveness of this method

    傳統器(單用戶匹配濾波)利用擴頻之間的互相關特性來區分各用戶信號.而在實際應用中,通道噪聲和近距離用戶對遠距離用戶的強多址干即遠近效應,使得接收機的性能受到很大影響.本文將獨立分量分析法引入傳統接收機,有效控制接收信號的能量,從而極大地提高了接收機的抗遠近性能,同時噪聲的影響被盡可能消除.模擬結果表明了該方法的有效性和可行性
  12. At one time the thesis look back the part parallel interference cancellation detection, and update the algorithm of the multiuser with lms algorithm. at last, the thesis presentes the blind multiuser detection with adaptive algorithm the blind multiuser detection base on kalman algorithm and probabilistic algorithms for blind adaptive multiuser detection

    同時對部分并行干多用戶器進行了回顧,並用lms演算法實現了多用戶器的演算法更新。最後對盲多用戶的自適應演算法進行了介紹,構造基於kalman濾波的盲多用戶器,並對隨機梯度演算法進行了誤性能的分析。
  13. Assigning serial different address code to different subscribers, useful signal is taken out of the same time slot and frequence, and is transmitted with one share channel. at received end, system makes use of completed address code from sending end to do correlative check and take out useful subscriber signal. the other address code signals are treated as broadband disturbing signal which is removed. in radio environment of existing variable disturbtion and muti - way declining, expand frequence signal ’ s broadband characteristics can improve system performance obviously. cdma mobile telecommunication system has some better characteristics, such as anti - disturbing 、 anti - way declining 、 secrecy 、 capacity 、 utilizing rate of frequence resource and so on, than other mobile telecommunication system

    Cdma ( codedivisionmultipleaccess )移動通信系統的技術基礎是基於擴頻技術的分多址,通過給不同的用戶分配各自特定的地址序列,將處于相同時隙和頻率的用戶信號分離開來,採用共享通道方式傳輸信息。在接收端,系統利用與發送端完全一致的本地地址對接收信號進行相關,提取需要的用戶信號,而將其他使用不同型的信號視為寬帶干而從中剔除掉。
  14. Distortion and gauss white noise distortion. the simulation of ideal system aims at absolutely clean channel, and the nonideal systems respectively set their channels as ricean channel ( multipath distortion channel ) and awgn ( gauss white noise distortion channel ). at the end of simulation, it use examining means of communication system as ber ( bit error rate ) analysis and eye diagrams analysis, then gives a summarize and a comment to the system

    模擬中的系統結構、模塊和傳輸速率的選擇符合標準的dvb1規范en300744 ,理想系統的模擬是針對完全乾凈的通道,而非理想系統分別將通道設置為hcean通道哆徑干通道)和awgn (高斯白噪聲通道) ,模擬最後用通信系統的手段進行誤率分析和眼圖分析,並對該系統作了總結和評價,加深對了dvb1系統的信號處理過程的理解,明確了目前面臨的問題。
  15. In the end, this paper considered detecting the desired user signal for uplink ds / cdma system. in that case, we need to suppress both mai and inter - chip interference ( ici ) caused by multipath propagation

    最後,本文研究了在ds cdma的上行通道中,同時存在多用戶干和多徑傳播引起的間干的情況下,對期望用戶信號的
  16. Direct sequence spread spectrum ( dsss ) communication systems have the characteristics of wide spectrum, low working signal - to - noise ratio ( snr ), anti - interference, anti - multipath effect, capability of cdma, lpi and lpd

    直接序列擴頻(英文簡稱dsss )通信具有頻譜寬、工作信噪比低、抗干和抗多徑效應能力強、可實現分多址、低截獲和低概率等特點。
  17. Multi - uesr detection ( mud ) refers to signal detection in multiple access communications. this detection has many good properties, such as decreasing multiple access interference, canceling out or moderating near - far resistance, able to decrease the requirement for output control, compensating the effects due to inoptimal orthogonality, improving system performance and increasing system capacity. mud is one of the methods that can overcome the mai in cdma with most potential and complete and becomes one of the critical techniques in the third generation mobile communication

    多用戶是指多址通信中的信號,具有抑止多址干;消除或減輕遠近效應;可適當降低對功率控制的要求;彌補擴頻互相關性不理想造成的影響;改善系統性能,提高系統容量等眾多優點,是克服cdma多址干最有潛力、最徹底的一種方法,並已成為第三代移動通信標準中倡導的關鍵技術之一。
  18. Accordingly, the interception and radio monitoring for spread spectrum communication have been of great research interests. and the chief task is to detect and separate the ds / cdma signals hidden in the noise and interference

    相應地,擴頻通信的電子對抗和民用無線電資源監管成為非常重要的研究課題,其中對噪聲和干中直擴分多址( ds / cdma )信號的盲和分離是首要任務。
  19. The problem of signal processing for direct - sequence code - division - multiple - access ( ds - cdma ) signal over multipath frequency - selective mobile channels is considered. a new blind receiver is proposed. without the knowledge of the multiple - access interference users spreading code and the channel characteristics, the receiver achieves blind detection with prior knowledge of only the desired users spreading code and approximate timing. by using reduced rank adaptive decorrelating filter and adaptive multipath combiner which is based on decision - directed algorithm, the receiver gets the ability to combat both fading and the near - far effect at low cost. simulation results demonstrate that the proposed receiver offers high performance

    本文研究多徑頻率選擇性衰落通道下直接序列擴頻分多址( ds - cdma )信號的處理問題,提出了一種新型的盲接收機.該接收機不需預知多址干用戶的擴頻,不需預知通道參數,只需已知期望用戶的擴頻和粗略的定時,就可以完成用戶的盲.同時,該接收機通過降維自適應去相關濾波和基於判決指導的自適應多徑合併,來獲得低成本和良好的抗衰落、抗遠近效應性能.模擬結果驗證了本文提出的接收機的優良性能
  20. That extremely promotes the development of the receiver. also the requirement of receiver becomes more rigorous. as the name implies, receiver need to improve the linearity, to reduce the distortions rate and bit error rate, and to expend the dynamic range, of course should ensure the signal detect capability precondition

    這些要求同樣也促進了中頻接收機的不斷進步,要求其在保證信號能力(即極高的靈敏度)的前提下:盡可能的提高接收機的線性度,使信號失真最小、誤率最低;盡可能的展寬接收機的動態范圍,使接收機的適應度更大、抗干能力更強。
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