smart beamforming 中文意思是什麼
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The product is ideally suited for demanding applications in military communications, 3g & 4g cellular basestation development, signal intelligence, smart antenna, radar beamforming, wireless test & measurement and satellite ground stations
下面列出各地區該產品客戶支持的聯系信息。該產品所有相關的文件和軟體都可以在產品頁的「下載」條目處進行下載。 -
At first, the author generally introduce the basal conception and theory, then discuss the existed optimal criterion and adaptive beamforming algorithm. the research of smart antenna at present is usually about theory discussion, and the theory analyzing object is usually linear array antenna, but td - scdma adopt circinal array antenna
該部分先簡要介紹了智能天線的基本概念和原理，包括智能天線的工作原理、分類、主要功能、研究內容與發展動態；然後闡述了目前存在的智能天線最優權準則和自適應演算法及其存在的問題。 -
Smart antenna has been widely researched in communication and signal processing, the adaptive beamforming algorithm is the key technique of smart antenna. it could adaptively steer the array directional pattern to form the main narrow beams with high gain in the direction of the users " signals while deeply nulling the interference signals. it is an effective way to realize the optimal receiving of the interesting signals
智能天線技術是目前通信和信號處理等領域的研究熱點，自適應波束形成演算法的研究是智能天線的一個關鍵技術，它能夠自適應地控制天線陣方向圖在用戶信號方向產生高增益窄波束，在干擾信號方向產生較深的零陷，是實現用戶信號最佳接收的有效方法。 -
With the trend that cdma will be the dominant multi - access scheme in the new generation of wireless communication, how to apply spatial processing in cdma system has been becoming the emphasis of research in smart antenna. a proper method is space - time processing due to the space - time structure of wireless channel. beamforming can be combined with rake to form 2d rake receiver, which can effectively weaken the enhancement of mai in conventional rake receiver. however a more effective method is to use space - time filtering. these two scheme will be discussed and the structure and realization will be presented
碼分多址技術逐漸成為新一代通信系統的主流多址技術，如何在碼分多址系統中引入空域處理以改善系統性能是當前智能天線技術研究的重點之一.考慮到無線通道的時空二維結構特徵，一種合理的實現方式是採用時空處理方法，將波束形成技術與時域分集技術相結合;另一種更有效的方法是在接收端採用時空二維聯合處理，對無線通道進行時空二維均衡 -
Chapter 2 embodies smart antenna technique. two types of smart antenna are introduced : beam - switched system and adaptive antenna system. then the spatial processor is discussed. some classical optimization beamforming schemes and adaptive algorithms are also presented
第二章具體介紹了智能天線技術，包括兩種類型的智能天線：切換波束系統和自適應天線系統。 -
An adaptive beamforming csma / ca ( abf - csma / ca ) protocol is proposed to support the application of smart antennas and provide higher channel utilization. theoretical analysis result of channel utilization of abf - csma / ca protocol is presented
提出了支持智能天線應用，並利用其定向通信能力提高網路性能的多址接入協議? ?自適應波束形成csma ca協議（ abf - csma ca ） 。 -
In the second one, a new algorithm of downlink beamforming is presented in this thesis because of some bottlenecks existing in smart antennas when applied in downlink
另一方面，由於在fdd系統中智能天線應用於下行鏈路存在一些瓶頸，本文提出一種新的智能天線下行波束形成方法。 -
Beamforming comes from smart antenna with strengthening desired signal and suppressing inter - users interference as its typical technical superiority. it is also the base to realize sdma ( space division multiple access )
波束形成技術源於智能天線、增強期望、抑制用戶干擾是其典型的技術優勢，也是sdma （ spacedivisionmultipleaccess ）能夠得以實現的基礎。 -
The digital beamforming ( dbf ) of the phased array antenna is a key technology of the smart antenna
陣列天線的數字多波束形成技術是智能天線中的一項重要技術。 -
A polling - based adaptive beamforming multiple access ( pb - abfma ) protocol is proposed. in pb - abfma, the simple and effective mechanism is used to guarantee the smart antennas to adapt the time - varying channel. the cap schedules packet transmissions based on the polling mechanism and dynamic tdma
該協議中採用簡單、有效的機制保證智能天線快速、準確地適應時變通道，以動態tdma方式為各節點安排發送時隙，採用微時隙為處于空閑狀態的用戶保持連接以降低接入時延，該協議可工作于異步網路中，具有很強的實用性。
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