intersymbol 中文意思是什麼

intersymbol 解釋
符號間的
  1. By using ofdm technology, we can redu ce the baud rate with a high frequency spectrum utility factor. another advantage of this technology is that the transmission can combat the intersymbol interference ( isi ) at the receiver without complex adaptive equalizer

    Ofdm既有較高的頻譜利用率，也有效地降低了碼速率，在不使用復雜的通道均衡技術的條件下仍然可以較好地克服接收時由多徑效應帶來的碼間串擾（ isi ） 。
  2. The main difficulty to achieve high data rate is the intersymbol interference ( isi )

    而碼間干擾是高速通信面臨的主要困難。
  3. Equalization technology is a effective method which can remove intersymbol interference ( isi ) in digital communication

    均衡技術是數字通信系統中克服碼間干擾的有效方法，目前得到了廣泛應用。
  4. In digital communication systems, intersymbol interference ( isi ) is often encountered when unknown signals are transmitted through nonidea channels

    數字通信系統中，信號在傳輸過程中不可避免會產生碼間串擾。
  5. Lt is well anown that the multi ? ath effeet results in signal fading and intersymbol interference ( isd, wnich causes great difficulhes in pewces of transndssion in underwater acoushc cotnmnication. in this papef we used frequency diversity method to overcome the problem of signal fading, and used the frequency - hopping method to ebonate the isi caused by multi - path

    水聲通道多途特性引起的信號衰落和碼間干擾是影響水下通信質量的主要因素，採用頻率分集技術可以處理幅度衰落，而跳頻技術則可以簡單、有效地抗多途引起的碼間干擾。
  6. In order to achieve high data rates on the severely band - limited underwater acoustic ( uwa ) channels, bandwidth - efficient modulation techniques must be employed, together with some sophisticated signal processing algorithms, such as adaptive equalization technique for the intersymbol interference caused by channel multipath propagation

    在帶寬嚴重受限的水聲通道中實現高數據率通信，必須使用高帶寬利用率調制技術，並結合自適應均衡等技術以有效地克服通道多途傳播產生的符號間干擾。
  7. This thesis analyzed the error performance of mfsk and mpsk modulator in hf with optimal receiver, studied the shortcoming and strongpoint of several typical short - wave data transmission systems and their performance over fading and intersymbol interference channels. the theory and key technical of adaptive modem is discussed. in the last, an efficient modulation scheme - block coded modulation is introduced into hf radio systems to improve the efficiency of hf data transmission, this paper also proposes a hf data transmission system scheme composed of a block coded modulator and a decision feedback type adaptive equalizer

    本文在對短波數傳兩種常見調制方式fsk及psk最佳解調性能分析的基礎上，討論了幾種採用典型調制技術的短波數傳系統（如時頻調制、多進制頻移鍵控慢跳頻、 chess系統）原理、優缺點以及抗衰落和抗符號間干擾的性能；分析了自適應串列數傳系統抗短波通道衰落和多徑干擾的原理、關鍵技術；在本文的最後引入一種有望解決短波數傳系統低效率狀況的調制方式bcm -分組編碼調制，給出了一個採用bcm技術與自適應均衡技術相結合的短波數傳系統方案，並通過計算機模擬進行了初部驗證。
  8. The simulation result shows that this technology can reconstruct signal and erase intersymbol interference, so that the performance of communication system is improved

    模擬結果表明，它可以使信號實現重構，消除碼間干擾，提高通信系統的性能。
  9. A near mlse equalization algorithm based on va ( viterbi algorithm ) is presented for overcoming severe isi ( intersymbol interference ) in this paper

    本文利用編碼的思想，在viterbi演算法的基礎上提出了一種改進的準mlse均衡演算法，它能有效的克服嚴重的碼間干擾。
  10. But when the bit rate is above 1 mbps, the signal suffers frequency select fading, which causes the serious intersymbol interference ( isi ). increasing the system power can ’ t reduce the ber

    但是當碼速率提高到1mbps以上時，信號受到頻率選擇性衰落，碼間干擾嚴重，增大系統功率也不能降低系統誤碼率。
  11. Finally, a new approach combining equalization and adaptive equalization with ldpc decoding are proposed to combat the intersymbol interference ( isi ) and channel noise

    最後，針對噪聲干擾和碼間串擾問題，研究了ldpc碼組合均衡技術以及組合自適應均衡技術。
  12. In order to reducing isi recovering transmitted signal equalizer have to be used in the reciever. because blind channel equalizer can reduce the intersymbol interference without the assistance of the transmitted sequence, it has been becoming a very popular research topic in recent years

    盲均衡器由於不需要訓練序列，僅利用接收信號的統計特性就能對通道特性進行均衡，消除碼間串擾，成為近年來通信領域研究的熱點課題。
  13. In mobile communication and high - speed wireless digital communication, multi - path, the finity of channel bandwidth and faultiness of the channel, lead to the bringing of intersymbol interference ( isi ) when data transfer. this is an important factor that degrades the performance of communication. however channel equalization technique can eliminate the isi and noise, it can also reduces the bit error ratio

    在移動通信及高速無線數據通信中，多徑效應和通道帶寬的有限性以及通道特性的不完善性導致數據傳輸時不可避免地產生碼間干擾（ isi ） ，成為影響通信質量的重要因素，而通道的均衡技術可以消除碼間干擾和噪聲，並減少誤碼率。
  14. Frequency - selective fading due to multipath propagation is a big obstacle in wireless communication. in the condition, the intersymbol interference ( isi ) comes into being and communication system appears error received symbol

    多徑傳輸效應引起的頻率選擇性衰落是無線通信的一大障礙，使接收信號產生碼間干擾（ isi ） ，導致通信系統出現誤碼。
  15. When the high rate data is transmitted through bandlimited channels in mobile communications, the intersymbol interference ( isi ) caused by channel distortion and multipath propagation will bring decoding error. it needs to adopt appropriate techniques to remove or reduce this kind of interference

    當在帶限通道上傳輸高速數據時，會因為通道畸變和多徑效應產生的碼間干擾而產生誤碼，這就需要採用適當的技術來消除或減少這種干擾。
  16. In the field of underwater acoustic communications, the intersymbol interference caused by multipath effects will make the reliability and the rate of the propagation of underwater acoustic signals

    在水聲數字通信系統中，聲波傳播的多途效應會引起嚴重的碼間干擾，使水下數據傳輸的可靠性和數據傳輸速率都大大的降低。
  17. Equalization is the technique that is used to suppress intersymbol interference

    均衡技術就是專門抑制這種干擾的技術。
分享友人
分享到 Line

分享到臉書