載波同步 的英文怎麼說

中文拼音 [zǎibōtóngbù]
載波同步 英文
carrier synchronization
  • 載 : 載Ⅰ名詞（年） year : 一年半載 six to twelve months; six months to a year; 三年五載 three to five ...
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 步 : Ⅰ名詞1 （步度; 腳步） pace; step 2 （階段） stage; step 3 （地步; 境地） condition; situation; st...
  • 載波 : signal carrier; carrier wave; carrier: 3路載波 three channel carrier載波傳輸 carrier transmission...
  1. 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。
  2. Several carrier frequency estimation algorithms including ekf and rls with opened loop are analyzed, which aim to settle the carrier phase estimation problem preferably under high dynamic circumstances. an improved phase and frequency esti - mation algorithm is proposed in the paper. simulation results show that the algorithm is faster and more precision than other algorithms

    為更好地解決高動態環境中的載波同步問題，本文進一步研究了存在動態多普勒頻移情況下的開環相干載波同步問題，包括基於擴展卡爾曼濾波、最小二乘演算法等的頻差、相差聯合估計方法。
  3. After achieving the synchronization of the pn code and carrier, despreading and demodulating the received dsss signal can be executed with the local synchronized code and carrier. so, lots of energy and fund has been expended on it

    直接序列擴頻系統只有在完成了偽碼同步和載波同步之後，才可能用同步的本地偽碼和本地載波對接收的擴頻信號進行解擴、解調。
  4. Fourth - harmonic mixers are adopted in carrier recover in the modulation millimeter wave qpsk signal

    解調方案同樣採用四次諧波混頻器在毫米波已調信號上進行載波同步。
  5. Blind frequency synchronization for mimo - ofdm systems with constant - modulus

    系統中的盲載波同步
  6. Carrier synchronous performance analysis and simulation of mc - cdma system

    系統載波同步性能分析與模擬
  7. Carrier frequency estimation is a significant problem in wireless communication

    載波同步是無線通信系統中的關鍵環節。
  8. What ' s more, some improved carrier synchronization algorithms for high order qam signals are described

    最後，討論了適合高階qam信號特點的載波同步方法。
  9. This thesis makes a deep research of digitized carrier synchronization technology and the algorithm ’ s software implementation

    本文對數字化載波同步技術及其演算法的軟體實現做了深入的探討與研究。
  10. And in this foundation, unified the kalman filter to make the improvement to the carrier recover algorithm, enhanced the synchronous system performance

    並在此基礎上，結合卡爾曼濾波器對載波同步演算法作了改進，提高同步系統性能。
  11. In this paper, the design and implementation of the carrier synchronization technology in the integrated anti - interference data transmission system have been investigated

    本文對綜合抗干擾數據傳輸系統的載波同步及實現進行了研究。
  12. To achieve fast acquisition with only a few symbols, a joint structure for clock and carrier synchronization with non - data aided ( nda ) mode is presented

    摘要為了實現解調中的快速同步，本文給出了一種聯合結構下無數據輔助載波同步和符號同步的方法。
  13. In chapter 4, the circuit of the carrier synchronization unit is implemented on fpga, the resistor transistor logic ( rtl ) schemes are presented

    第四章在fpga平臺上實現載波同步單元電路，並給出了實現后的fpga資源消耗、寄存器傳輸邏輯（ rtl ）原理圖。
  14. Firstly, on the base of analyzing psk ' s theory and audio - card ' s constitute and data transfers, bdpsk and qdpsk soft - modulation and soft - demodulation systems based on audio - card are studied and implemented, including generating digital carrier sequence, synchronizing carrier, designing filter, sampling and judging, etc. the system adopts coherent demodulation method, synchronizing carrier adopts costas loop

    本文首先分析了調相信號調制解調的基本理論和多媒體計算機（ mpc ）聲卡組成原理及數據傳輸等方面的內容，然後研究並實現了基於計算機聲卡的bdpsk和qdpsk信號軟體調制解調系統，內容包括數字載波序列的產生、載波同步、濾波器設計，信號的抽樣判決等。
  15. The digital base - band cdma transmitting and receiving scheme is put forward. the scheme uses a technique called as zero medium frequency without the need of pn codes synchronously are resumed

    提出了具有免偽碼同步恢復、免載波同步提取、免位同步的零中頻cdma數字基帶發送、接收方案。
  16. The performance of new cdma system under simple multipath, rician and rayleigh fading channels is evaluated using simulation. fourth, synchronization methods of cdma system are discussed

    此外，論文還研究了cdma系統的同步方法，模擬實現了完全互補碼的捕獲和跟蹤同步，系統的載波同步和幀同步。
  17. The principle and structure of pll ( phase - locked loop ), including fll and loop filter, are analyzed and described. the module of carrier synchronization in the all - digit ds - qpsk receiver was carried out in the fpga chip. the problem about the estimation and track of the correlative carrier frequency under high dynamic circumstances was resolved very well

    針對某遙測遙控全數字接收機的研製，對相干載波同步中的鎖相環、鎖頻環、 dpll 、本地nco等進行了詳細的分析和優化設計，在fpga上實現了高動態全數字ds - qpsk接收機中的載波同步模塊，解決了大范圍和動態多普勒頻移下接收機的相干載波提取與跟蹤問題。
  18. There are two uncertain factor about it : the phase of the pn code and the doppler - shift. after capturing the received signal successfully, the traditional ds receiver always uses a delay locked loop ( dll ) to synchronize the pn code and then uses a costas loop to realize the carrier synchronization. this complex closed - loop structure not only take long time to realize the synchronization, but also has the defect of “ hang up ”

    傳統的擴頻接收機通常在捕獲偽碼信號后利用遲早門鑒相的延時鎖定環來實現偽碼的精同步，解擴后利用科斯塔斯環實現載波同步，這種閉環結構不僅同步時間長、結構復雜，而且鎖相環還存在所謂的「 hang - up 」現象。
  19. It first introduces the mpeg - 2 standard and the grammar structure of the ts. then it describes the principle of synchronization and multiplexing in digital communication. the synchronization comprises the carrier synchronization, bit synchronization, group synchronization and network synchronization while the multiplexing includes bit multiplexing, word multiplexing and frame multiplexing

    本文首先介紹了mpeg _ 2標準及其mpeg _ 2傳輸流語法結構，接著闡述了數字通信中的同步和復接理論，同步包括載波同步、位同步、群同步和網同步，復接包括按位復接、按字復接、按幀復接。
  20. Digitalizing includes modulation mode digitalized and equipment all digitalized. aiming at this characteristic, this thesis research in carrier synchronization and signal demodulation of new generation space tt & c system

    數字化包括調制方式的數字化和設備的全數字化，本文就結合這一特點對新一代航天測控系統中載波同步和信號解調進行了研究。
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