mobile base station 中文意思是什麼
mobile base station
解釋
移動通信基站-
The paper studies three key problem of base station array antenna for mobile communication, controlled radiation pattern, beam width and passive intermodulation
本文研究移動通信基站天線中的三個關鍵問題，波束賦形、波瓣寬度、無源交調。 -
Sgsn 900 1800mhz tdma digital cellular mobile communication network test method of gprs general packet radio service base station system and serving gprs support node interface
900 1800mhz tdma數字蜂窩移動通信網通用分組無線業務gprs基站子系統與服務gprs支持節點 -
Base station identity code. an attribute of a gsm ( global system for mobile communications ) cell which is a code allowing a distinction between local cells having the same radio frequency
基站識別碼。 gsm （全球移動通信系統）蜂窩小區的一個屬性，通過基站識別碼，不同的本地蜂窩小區可以使用相同的無線頻率。 -
The smart antenna, which is adapted in the wireless mobile communication system, in fact, forms an antenna with a high gain. thus communication in all directions can be proceeded, then base station antenna coverage, system capacity and service quality are improved, also inter - symbol interferes and multi - access interfere are reduced. the space division multiple access ( sdma ) is introduced, and users can be distinct from each other through their special location
在無線移動通信系統中採用智能天線技術，實際上是通過數字信號處理，使天線陣為每個用戶自適應地進行波束賦形，相當于為每個用戶形成了一個可跟蹤它的高增益天線，從而即可以進行全方位通信，也可以用較小的發射功率覆蓋相同的范圍以及提高系統容量和業務質量、降低用戶間的碼間干擾和多址干擾。 -
The medium access control ( mac ) layer protocol of the airlink interface between the mobile data base station ( mdbs ) and mobile end systems ( m - ess ) in cellular digital packet data ( cdpd ) is studied firstly. the access method of slotted non - persistent digital sense multiple access with collision detection ( dsma / cd ) is described mainly
本文首先研究了蜂窩數字分組數據（ cdpd ）空中介面中的介質接入控制層（ mac ）協議，詳細論述了基於時隙的非堅持的、帶沖突檢測的數字載波偵聽多址接入協議（ dsma cd ） 。 -
According to this requirement, the railway mobile digital communication system based on the gsm system for mobile communication is put forward in this paper to accomplish the data transfer between the control center and the locomotive. in this paper, the design of the ms ( the mobile station ) and the erected bs ( the base station ) out of the gsm cover is carried out. last we discuss the key techniques of the railway mobile digital communication system, the handoff and the error _ correct coding
本文針對這種要求，在gsm移動通信系統的基礎上提出了建立電力機車移動數字通信網以實現機車與控制中心之間的數據傳輸的方案，設計了系統中車載移動臺、 gsm覆蓋區外自建基站的基本構造，分析了系統中越區切換、糾錯編碼等關鍵技術，並詳細的闡述了其實現方法。 -
Media gatewaytdmatm integrated access equipment is the main way of narrow band and data private line access. users may access fixed telephone network and dial - up access braodband man through twisted cable ; users may access broadband data network through adsl or ddn, or fr, etc ; mobile comminication users may access 2g or 3g mobile communication network through base station equipment and wireless gateway
媒體網關tdmatm綜合接入設備主要是窄帶和數據專線接入方式，用戶通過雙絞線可以接入固定電話網以及撥號接入寬帶ip城域網；用戶通過adsl或ddn 、 fr等可接入寬帶基礎數據網；移動通信用戶通過基站設備和無線網關可接入第二代或第三代移動通信網。 -
At present, el interface based on g703 is widely applied group network, relay network, gsm mobile base station and military communication for the purpose to transmit voice signals, data, pictures and etc. in this paper, the author firstly analyses the developing tendency and status quo of nowadays digital loop system
目前，建立在g703基礎上的e1介面在分組網、幀中繼網、 gsm移動基站及軍事通信中得到廣泛的應用，傳送語音信號、數據、圖像等業務。 -
The mobile communication system just as gsm cdma has developed quickly in recent several years, therefore the quantity of the equipment and base station has increased quickly
隨著近年來gsm ， cdma移動通信系統飛速發展，設備和基站越來越多，規模也越來越大。 -
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 -
In this thesis, the application of swr in the base station based on mobile communication is studied
本文對軟體無線電在移動通信基站中的應用進行了深入研究。 -
Mobile communication system base station antennas
移動通信系統基站天線技術條件 -
Use dxx series transmission equipment to improve base station transmission quality of beijing mobile telephone network, including : equipment configuration, network structure, network management facility, and network synchronization scheme
利用dxx系列傳輸設備對北京移動通信的基站傳輸網進行了改進，包括：設備組成、網路結構、網管系統結構和功能以及同步時鐘方案等。 -
Based on these advantages we analyze the performance of constant - power variable - rate m - qam schemes for spectrally efficient data transmission over nmf channels. by introducing the adaptive modulation approach, we gain two things : 1 ) the error rate is kept at a constant level. 2 ) the achievable spectral efficiency comes within 5 db of the shannon capacity limit. at the last chapter, the presentation of a single base station and a single mobile scenario proved the feasibility of adaptive schemes
然後作者的精力轉入通道的自適應方案的研究中，首先通過研究發現nakagami衰落因子的適當調整可以近似於常見的瑞利衰落和萊斯衰落，接著研究在無線通道中採用三種不同自適應方案時的通道容量，研究表明速率的調整是增加通道容量的關鍵，在此基礎上，著重研究了離散變速率qam的情況，表明這種調制方案無論在頻帶利用率還是在系統平均誤碼率比其它情況提高很多。 -
The relative motion between the base station and the mobile results in random frequency modulation due to different doppler shifts on each of the multi - path components, also called time selective fading
由於基站與移動臺之間的相對運動，每條路徑都會有一個明顯的多普勒頻移，導致通道的隨機頻率調制，也稱時間選擇性衰落。 -
The software system of base station transceiver subsystem ( bts ) is one of the large - scale distribute system in mobile communications field, which consists of many special modules. this paper takes example for one module in bts system to introduce the design and implementation of oss, which involves two kinds of the encapsulation
Bts軟體系統就是一個應用於移動通信領域的大型分散式系統，它由多個模塊組成，本文以bts軟體系統中的一個模塊rmm為例介紹了支撐子系統的設計實現過程。支撐子系統主要完成兩個方面的封裝。 -
The radio frequency receiver supports interface for instrument and base station and air interface for mobile station, and it takes the task of magnifying low noise and down - convert and digital baseband processor filtering and magnifying intermediate frequency to reverse link signal. the digital baseband processor samples the received signal after down - convert radio frequency signal to intermediate frequency signal and processes other processing and supports interfaces to computer, next sends data to computer. the gps receiver supports interface for instrument and gps system, and receives gps system signal, next it demodulates the correlative information and sends out benchmark clock signal we need
射頻接收部分主要為儀器和基站、移動臺提供空中介面，其主要任務是在反向鏈路上對接收到的射頻調制信號進行低噪聲放大、射頻下變頻變換、中頻濾波放大等;數字基帶部分為對接收信號變頻為中頻后進行a / d采樣，以及其他的rsp處理並和計算機提供介面，將數據送至計算機進行后臺處理、顯示等; gps接收機部分為儀器和gps系統提供介面，接收gps系統信號並解調相關信息，輸出所需的電文及時鐘基準信息等。 -
900 1800 mhz tdma digital cellular mobile telecomunication network technical specification of mobile services swiching center - base station subsystem interface phase 2
900 1800 mhz tdma數字蜂窩移動通信網移動業務交換中心與基站子系統間介面第二階段技術規范 -
Optimization simulation of a base station coverage in mobile radio networks
移動通信基站覆蓋區優化模擬 -
In mobile communication, the multi - path of channel brines the inter - symbol interference ( isi ) which cna make the ber of system larger. a technology called adaptive equalizer combined with adaptive array antenna is researched. this technology is used in the base station to restrain isi, and it is realized through landscape orientation filter, whose weight vectors are formed by rls algorithm. the result of computer simulation showe that the ber performance of system is good enough to ensure the requirement of communication
在移動無線通信中，由於傳輸通道的多徑性質，會在接收端引起碼間干擾，使系統誤碼率變大，結合智能天線系統研究了一種自適應均衡技術，在基站一端使用，用來抑制碼間干擾，它通過橫向濾波器來實現，通過rls演算法自適應地產生加權因子.計算機模擬的結果可以證明，使用無衡技術后，系統的誤碼性能可能滿足通信需要
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