multiple access techniques 中文意思是什麼

multiple access techniques 解釋
多址技術
  • multiple : adj 1 多重的；復合的 復式的 多數的 多樣的。2 倍數的 倍。3 【電學】並聯的；多路的 復接的。4 【植物...
  • access : n. 1. 接近；會面。2. 捷徑，門路〈指方法、手段〉；檢查孔；進路，入口；【自動化】（存貯器的）存取。3. （病的）發作；（怒氣等的）爆發。4. 增加。
  • techniques : 方法
  1. On the basis of the minimal power obtained by above method, we compare the advantages and disadvantages of different multiple access techniques

    利用前面演算法得到的最小能量作為理論極限，我們比較了各種多接入方式的優點和缺點。
  2. For wireless communications, direct sequence code division multiple access ( ds - cdma ) techniques have received a great deal of attention due to the expectation of capacity increase, interference rejection capability, security, and so on. in a high data rate application such as multimedia services, however, the capacity of ds - cdma systems is limited by both the inter - chip, or inter - symbol interference

    Cdma技術以其高抗干擾能力、高容量、高保密性等技術優勢在第三代移動通信系統中被廣泛應用，然而在高速數據業務中，嚴重的碼間干擾和符號間干擾會導致系統性能明顯下降。
  3. 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。
  4. The research work in this dissertation carries a deep study on new techniques of prn and put emphasis on the multiple access protocol to support the integration of smart antennas with prn. the major achievements are outlined as follow

    近年來，諸多新的應用對分組無線網的研究和發展不斷提出新的挑戰；另一方面，通信和微電子技術的迅速發展又為分組無線網的發展創造了良好的契機。
  5. 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

    多用戶檢測是指多址通信中的信號檢測，具有抑止多址干擾;消除或減輕遠近效應;可適當降低對功率控制的要求;彌補擴頻碼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多址干擾最有潛力、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。
  6. Capacity and performance of mobile radio systems essentially depend on the choice of the multiple access scheme. a novel and promising wireless digital modulation / multiple access technique called multicarrier cdma is studied in this thesis, including reducing the peak - to - average ratio, which is one of its key techniques. mc - cdma is combination of ofdm and cdma, thus advantages of both techniques are exploited

    移動通信系統的容量和性能在很大程度上取決于多址方案的選擇，本文主要討論了在通信領域新興的擴頻多址方式一多載波cdma （ mc - cdma ） ，並對降低mc - cdma系統峰值平均功率比這一關鍵技術進行了研究。
  7. The practical aspects of these multiple access techniques are also discussed and compared. the hybrid schemes, which combine the advantages of both orthogonal and non - orthogonal techniques, can provide promising solutions for future wireless cellular communications

    我們討論和比較了這些接入方式在實際應用方面的因素，指出綜合正交和非正交方式優點的hybrid系統可能是未來無線蜂窩通信的一種可行方案。
  8. The cdma technique has come to be the primary multiple access techniques for the third generation mobile communication systems. consequently, this thesis focuses on the smart antenna technique and its applications in ds / cdma mobile communication systems, which the author ' s main contributions include

    Cdma系統固有的諸多優點使其成為第三代移動通信系統的主流體制，因此，本文主要研究了智能天線技術在ds / cdma系統中的應用，具體工作如下： *較為系統地介紹了智能天線的基本概念。
  9. Multi - user detector ( mud ) is one of the key techniques for these problems in cdma systems, which deals with multiple access interference as useful information and eliminates it by utilizing correlation characteristics between signature waves. mud techniques can dramatically relax " near - far " effects, significantly improve the system ' s performance and increase the capacity of cdma systems

    它將信號中的多址干擾看作一種有用信息，利用擴頻序列之間的互相關性來消除多址干擾，能減輕「遠-近」效應影響，改善系統的性能，提高系統的容量。
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