接收端信號 的英文怎麼說
中文拼音 [jiēshōuduānxìnháo]
接收端信號
英文
receiving end signal- 接 : Ⅰ動詞1 (靠近;接觸) come into contact with; come close to 2 (連接; 使連接) connect; join; put ...
- 收 : Ⅰ動詞1 (把攤開的或分散的事物聚集、合攏) put away; take in 2 (收取) collect 3 (收割) harvest...
- 端 : Ⅰ名詞1 (東西的頭) end; extremity 2 (事情的開頭) beginning 3 (門類; 方面) item; point 4 (原...
- 號 : 號Ⅰ名1 (名稱) name 2 (別號; 字) assumed name; alternative name3 (商店) business house 4 (...
- 接收 : 1 (收受) receive; reception; accept; [電學] receipt; receiving 2 (接管) take over; expropriat...
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( c ) propose the scheme to implementing the coder and deoder of optical time - spreading / frequency - hopping, by assigning two orthogonal codes for one user and using these two codes to encoding 1 and 0 respectively, differential detection can be adopted. not only improves system performances in ber, but also resists the interference such as mai, and does n ' t need any control devices to evaluate the optimum decisive threshold
通過給每個用戶指定互相關為0的兩個地址碼分別發送1和0信號以及在接收端採用差分檢測技術,避免了ook (開關鍵控)光通信系統中0不發送光脈沖和ook常規檢測方式下最佳判決門限必須根椐用戶數等外界環境而改變,從而提高了系統性能和降低了系統的復雜度。The gaussian approximation method used in single traffic cdma system is introduced, at the same time the improved gaussian method also discussed for greater accuracy, when the active user load is small. however, the improved gaussian method needs more complicated calculations
研究gsc的結構以及其輸入端信號的統計分佈,為我們後面研究多速率擴頻系統分集合併的gsc接收機作一些必要的數學準備。The use of balanced transmission lines can help but if the signal bandwidth extends to dc there will be a need for a very high performance instrumentation amplifier at the receiving end to restore a ground referenced signal
採用平衡傳輸線有助於改善信號完整性,但是對于帶寬延伸到dc的信號,接收端要靠超高性能的儀表放大器來還原參考電平。The signal power perturbation on receivers caused by air target as well as the receiver ' s position information are used to extract the exact location of the target
廣播、電視信號被空中的飛行器擾動以後,在接收端形成接收功率的波動。To construct and analysis the ttd demo module, the mems devices substitute for the former electric devices, then succeed to obtain the rf mems front - end r / t system which can communicate with each other
最後,用mems器件代替傳統電子器件,成功建立1 . 88ghzpcb級rfmems前端收/發模塊,達到了合理的發射功率和接收靈敏度,成功收發信號。In telephony, an interference due to reflection of the transmitted signal from the receiving end
在電話技術中,由於發送信號從接收端反射回來而引起的干擾。The system is based on a ' subaudible ' tone injected after the audio stages into the transmitter during encode and the tone is detected before the audio circuits in the receiver
這套技術的基本原理如下,進行編碼(調制)的時候,一個「亞音」音頻信號被注入聲音信號,並在接收端的音頻電路前檢測這個音頻信號解碼。This dissertation tracks the most recent direction of mimo - ofdm systems studies and makes a thorough research on the key technique and algorithms of the transmitter signal design as well as detection algorithms at the receiver
本文就目前mimo - ofdm系統的研究熱點:發射信號方案設計和接收端信號檢測中的關鍵技術和演算法進行了深入的研究。The key technique of telemetry digital diversity receiver is diversity technique, which combines independent multi - path signal or extremely irrelevant multi - path signal at less, and improves instant snr and average snr in receiver and enhances communication quality. there are many irrelevant multi - path signal in wireless
遙測數字分集接收機一個重要關鍵是分集技術,分集技術是對獨立的或至少是高度不相關的多徑信號進行相加,從而改善接收端信號的瞬時信噪比和平均信噪比,提高通信質量。Qpsk modulation for digital television using advanced digital signal processing technology, full compliance with dvb - s standard, the receiving end can be directly used for receiving digital satellite receiver. it must not only be able to achieve a higher utilization of the spectrum, with a strong anti - jamming and high performance. fm microwave equipment and simulation and will be good compatibility
Qpsk數字電視調制器採用了先進的數字信號處理技術,完全符合dvb - s標準,接收端可直接用數字衛星接收機進行接收。它不但能取得較高的頻譜利用率,具有很強的抗干擾性和較高的性能價格比,而且和模擬fm微波設備也能很好的兼容。The input video is sampled at the transmitter of the sub - system, and code stream is sent to channel after compression. at the receiver, output video is reconstructed after decompression
在發送端對輸入的視頻信號進行數字採集、壓縮,壓縮后的數據流經通道傳輸至接收端解壓縮,輸出顯示。In transmission system, the original signal is modulated to ofdm signal after be coded in dpsk. and in receiving system, the modulated ofdm signal is synchronized and demodulated
在發射端,將以一定速率輸入的二進制信息在進行dpsk編碼后調制到基帶ofdm信號上,在接收端,對已調制的ofdm信號進行同步和解調。Secondly, we simulate the transmission process in computer, calculate the optical - signal - to - noise - ratio ( osnr ) of output signal with the same input signal filtered by the ofbg, matched filter and f - p filter, analyze the improvement of the osnr after filtered by them. we find it also has advantage over f - p filter. taking the two reasons into account, we believe that the weak ofbg is superior to the widely used f - p filter
另外用計算機模擬計算了光信噪比的改善情況,研究發現:一個相同的噪聲信號經弱ofbg后的光信噪比較經過f - p濾波器后的光信噪比高,由此認為, ofbg用作光濾波器對接收端前置光放大器的噪聲進行濾波,比常用f - p光濾波器具有更大的優越性。Because the distances from different onus to olt are different, the amplitudes and phases of the different signals will have significant difference when receiving the receive terminal
由於不同的光網路單元onu與光線路終端olt的距離不同,實際工作時到達接收端的信號的幅度,相位都相差很大。In the part of platform designing, proper peripheral chips are chosen according to the audio signal format. and how to achieve channel synchronization in the receiving part is an important aspect of wireless transmission system. in order to solve this problem, three algorithms are used ; those are scramble / descramble, improved over - sampling, and frame synchronization protocol
在硬體驗證平臺的設計部分,文章根據音頻信號的特點選擇了適當的外圍晶元,並且針對無線傳輸接收端的同步問題,採用了三種演算法來減少失步現象,即擾碼/解擾演算法,改進型的過采樣演算法,以及幀同步協議。Synchronization is the commander of every digital communication system, without it the system is unable to work orderly and correctly. a five - tuple of time - frequency diversity is adopted to guarantee that the synchronization signal be retrieved reliably in the receiver
同步是任何數字通信系統有序工作的「指揮棒」 ,本研究採用5重時頻分集的方法,使得在接收端能夠可靠地恢復出系統工作所需要的同步信號。At the beginning, this paper has some brief dissertation on the basic principle of the dsl and the multimedia data compression, the key technique of sdsl, the transport protocols, and the data transfer system structure based on the twisted - pair. then it gives an analysis of the point - to - point data link protocol ( ppp ) and the real - time transmission protocol in detail, which provide the side - to - side transmission service for audio frequency and video frequency data, and so on based on the these, we developed a multimedia sdsl modem system used to transfer data and phonetic
本文首先對dsl系統和多媒體數據壓縮技術的基本原理、 sdsl的關鍵技術、傳輸協議以及基於雙絞線的數據傳輸系統的結構進行了簡要的論述,並詳細分析了點到點的數據鏈路協議( ppp協議)以及實時傳輸協議,其為音頻、視頻等實時數據提供端到端的傳送服務。可以向接收端傳送恢復實時信號必需的定時和順序信息,並向收發雙方和網路運營者提供qos監測手段。It can realize the circuitry ' s primary protection as well. by using it ' s high - frequency transmitter together with respective peripheral process equipments, programmable testing signals are added to the transmission channel
該裝置通過高頻發訊機與相應外圍加工設備合成並傳送發端測試信號,于收訊機端接收此信號並分析傳輸通道故障信息。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碼分多址,通過給不同的用戶分配各自特定的地址碼序列,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碼對接收信號進行相關檢測,提取需要的用戶信號,而將其他使用不同碼型的信號視為寬帶干擾而從中剔除掉。This novel transmit diversity technique, which combines channel coding, modulation and signal processing at receive terminal, can make full use of the fading multi - path in the wireless communication systems so as to mitigate the signal attenuation. this technique is mainly designed to combat channel fading in downlink transmission by combining the technique of channel coding and that of array diversity, hence increasing the capacity of wireless communications systems and giving diversity gain and coding gain to them
基於多輸入輸出( mimo )的空時編碼技術是實現未來帶寬資源日益緊張的高速無線數據通信系統的重要技術,它結合了通道編碼、調制和接收端的信號處理,能夠充分利用無線通信通道中多散射體環境所造成的多徑,從而提供信號的抗衰落性能。分享友人