smart antennas 中文意思是什麼
smart antennas
解釋
智能天線-
Repeat iterative adaptive algorithm for smart antennas in td - scdma systems
系統中智能天線的重復迭代自適應演算法 -
Detailed work include : generalizing, analyzing, mathematically calculating, im - proving and estimating by experiments the 2d - doa estimation from the classical al - gorithm of 1 - d subspace. moreover, application and simulation of the properties of the cyclostationary of signals in parameter estimation within smart antennas area are studied as well
具體工作包括：經典一維子空間演算法推廣到二維中的分析，演算，改進，實驗模擬；以及信號平穩特性在智能天線參數估計中的應用和實驗模擬。 -
This article systematically compares two major types of beam - forming techniques in adaptive smart antennas for mobile communication systems, i. e., direction - of - arrival based beam - forming and reference signal based beam - forming
系統地比較了移動通信系統中自適應智能天線的兩大類波束形成技術，即基於來波方向的波束形成和基於參考信號的波束形成。 -
In this thesis, we introduce the smart antennas and mainly examine the performance enhancements that can be achieved by employing sa in scdma wireless access system. in the part of introduction of smart antennas, we discuss the switched - beam arrays realizing by mending butler network at first. then we compare the different beam forming algorithms in sa
在對兩大類智能天線系統的介紹中，本文首先討論了一種以改進的butler網路實現波束賦形的多波束切換系統，推導了該天線陣的饋電模型並給出了模擬結果；然後，本文對智能天線波束形成演算法進行了比較，總結了不同演算法的優缺點，並給出具有代表性的演算法描述與模擬。 -
Digital signal processing technologies were used to produce spatial and directional beam in smart antennas. then the main beam aims at the coming direction of reference user and the side lobe points to the coming direction of interference user
智能天線是利用數字信號處理技術，產生空間定向波束，使天線主波束對準期望用戶信號到達方向，旁瓣或零陷對準干擾信號到達方向，達到充分高效利用移動用戶信號並刪除或抑制干擾信號的目的。 -
Digital signal processing technologies were used to produce spatial and directional beam in smart antennas. then the main beam aims at the coming direction of reference user and the side lobe points to the coming direction of interference user. smart antennas are classified to switching - beam and tracking - beam
智能天線利用數字信號處理技術，產生空間定向波束，使天線主波束對準期望用戶信號到達方向，旁瓣或零陷對準干擾信號到達方向，達到充分高效利用移動用戶信號並刪除或抑制干擾信號的目的。 -
Simulation results show that abf - csma / ca protocol can realize space - division - multiple - access ( sdma ) and provide very high channel utilization. chapter 3 considers employing smart antennas in the central access point ( cap ) of wireless internet access networks
第三章研究了智能天線在internet無線接入網路中的應用，主要考慮使用智能天線對抗同通道干擾與多徑衰落，增加覆蓋范圍，並在mac層實現智能天線與網路的有機結合。 -
Smart antennas technique in mobile communications systems
移動通信中的智能天線技術 -
The application of smart antennas to mobile telecommunications
智能天線在移動通信中的應用 -
Analysis and simulation results show that the proposed pb - abfma protocols can effectively support the application of smart antennas and provide high channel utilization and low turn - around delay. in chapter 4, we study employing smart antennas in the basestation of packet radio networks
結果表明， pb - abfma協議能夠有效支持智能天線應用並具有較高的通道利用率與良好的時延性能，其簡單有效的碰撞分解演算法能保證新用戶快速接入通道。 -
Simulations results under rayleigh fading channel and on / off traffic model show that asama protocol can effectively support the application of smart antennas and provides high channel utilization and low delay. in chapter 5, we propose a qos ( quality - of - service ) - supported adaptive slot allocation multiple access ( qasama ) protocol
在考慮多波束智能天線，及話音與數據業務特點的基礎上，提出了提供qos保障的自適應時隙分配多址接入協議（ qasama 、 。 -
Smart antennas for antijamming satellite communications
智能天線及其在衛星通信抗干擾中的應用 -
First, the spatial division theory of smart antennas is proposed based on the relativity of the steering vectors of antenna array, then the spatial division capability of antenna array is presented
首先從天線陣列導向矢量相關性的角度闡述了智能天線的空分原理，然後根據這個原理提出天線陣列空分能力表達式。 -
Scdma wireless access network, the newborn wireless communication system, uses many up - to - date techniques, such as smart antennas, to solve the problem
Scdma無線接入系統是一種全新的無線接入系統，它採用智能天線等新技術作為解決上述難題的有效手段。 -
Approximate analysis of channel utilization is presented. simulation results show that the proposed protocol can support smart antennas effectively and provide high channel utilization and qos for voice and data traffics
結果表明， qasama協議能有效支持智能天線應用，具有很高的通道利用率，並能為話音與數據業務提供良好的qos支持。 -
Multibeam base - station smart antennas are discussed in this paper. we analyze the outage probability of mobile communication system suffering both fast fading and shadowing by means of statistical propagation model, and contrast the case that adopt multibeam smart antennas to the case that adopt omnicase. the results emulated by computer show that the outage probability of mobile communication system will diminish as the increasing of the number of beams using smart antennas no matter when suffering a single co - channel interfence or six ones
研究了移動通信環境下的多波束智能天線，並基於統計傳播的同通道干擾模型，分析了快衰落及慢衰落情況下未採用多波束智能天線與採用多波束智能天線時的中斷率，並進行了比較.計算機模擬結果表明：採用多波束智能天線，不論在單個同通道小區還是多個同通道小區情況下，系統的中斷率將隨著波束數的增大而降低 -
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。 -
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。 -
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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