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base band

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base band 【無線電】基(本頻)帶。

【無線電】基(本頻)帶。 “base“ 中文翻譯：   adj. 1.賤的，劣的；卑下的，低級的；卑鄙的。 2. ...“band“ 中文翻譯：   n. 1.隊，團，群；(盜賊等的)幫，伙。 2.(吹奏) ...“base band bank“ 中文翻譯：   基頻排“base band combiner“ 中文翻譯：   基帶匯編器“base band distribution“ 中文翻譯：   基帶分配部“base band frame“ 中文翻譯：   基帶框“base band lan“ 中文翻譯：   基頻局域網絡“base band transmission“ 中文翻譯：   基帶傳輸“base-band signaling technology“ 中文翻譯：   基礎頻帶信號技術“base-band spectral analysis“ 中文翻譯：   基帶頻譜分析“bb base band“ 中文翻譯：   基帶“bbf base band filter“ 中文翻譯：   基帶濾波器“bbx base band exchange“ 中文翻譯：   基帶交換“raw base band“ 中文翻譯：   原型基帶“transmitter base band exchange“ 中文翻譯：   發射基帶交換“base band local area network“ 中文翻譯：   基頻局域網絡“base band tra mi ion“ 中文翻譯：   基帶傳輸“a band“ 中文翻譯：   a波段; a帶“a-band“ 中文翻譯：   a波段; a帶“band“ 中文翻譯：   n. 1.帶，繩；帶形物；箍；箍條；嵌條；鑲邊；鋸條； 〔pl.〕 (法官等的)寬領帶。 2.束縛，羈絆；義務；〔古語〕縲紲，枷，鐐，銬(等)。 3.【建筑】帶形裝飾，帶花；【生物學】橫紋。 4.【物理學】頻帶，波段；光帶；【機械工程】調帶；【地質學；地理學】夾層；【無線電】波段。 5.(裝訂)釘書線，綴線。 an iron band 鐵箍。 a legal [moral] band法律[道義]上的義務。 a rubber band 橡皮筋，橡皮圈。 vt. 1.用帶捆扎。 2.在…上加條飾[鑲邊]。 3.[后接復數反身代詞或用被動語態]團結，聯合。 They are banded together closely. 他們緊密團結。 We band ourselves closely against the invaders. 我們緊密地團結起來抗擊入侵者。 vi. 團結，聯合 (with). n. 1.隊，團，群；(盜賊等的)幫，伙。 2.(吹奏)樂隊。 a band of robbers 一伙強盜。 a band of stray dogs 一群野狗。 a dance band 跳舞的伴奏樂隊。 a military [marine] band 陸軍[海軍]軍樂隊。 the B- of Hope 〔英國〕少年禁酒團。 beat the band 〔美國〕顯眼，出眾；猛烈地；非常 (It rained all day to beat the band. 大雨傾盆，終日不止。 Business fell off to beat the band. 生意一落千丈)。 when the band begins to play 事態變嚴重時。 “band s“ 中文翻譯：   s波段“s band“ 中文翻譯：   s波段; s頻帶“s-band“ 中文翻譯：   S 波段〔一種無線電超高頻波段〕。 “t band“ 中文翻譯：   t帶,端粒帶“t-band“ 中文翻譯：   t帶:用t染色法在染色體上產生帶

base billon

The synchronization of frequency hopping method referenced the jtrs radio system of usa military , and designed a synchronization method used in our radio include creating the frequency hopping map and the base band frame architecture in frequency hopping mode . the paper also analyzed the synchronization capability on theory . it has been proved correct on theory by showing the false probability , capture probability and the synchronization time 對跳頻圖案的產生和跳頻的幀結構,本文不僅從理論上分析了同步性能,給出了虛警概率和檢測概率,估算了同步的捕獲時間,證明均能滿足系統指標要求,而且通過與合作單位進行的整機聯調和實測證實了該方案的可行性。

Supporting simultaneously gsmgprs and cdma2000 technologies , radioone 6300 chip can be operated on cellular frequency and pcs frequency . it supports 307 kbits transmission when operated on cdma2000 ix mode and 40 kbits transmission under gprs mode . it can be used in association with modem base band processor of qualcomm s msm6300 mobile station Radioone6300芯片同時支持gsmgprs和cdma2000技術,可工作在蜂窩頻段和pcs頻段，在cdma20001x模式下支持307kbits傳輸，在gprs模式下支持40kbits傳輸，與qualcomm的msm6300移動臺modem基帶處理器聯合使用。

This test divides four chapters : the first chapter introduces the basic concept and development conditions of the software defined radio ; the second one discusses the key technique of the software defined radio , its technique challenges and the resolve . the third one discusses the 3g rtt and the apply of the software defined radio in the 3g rtt ; the fourth one studies the application of the software defined radio architecture that based on the dsp to realize the base band disposal module of the terminal in the 3g then the test presents a kind of gsm / td - scdma terminal architecture and analyses the circuit of the front part , then it also analyses the resource need . moreover , it also presents the hardware architecture of the td - scdma base band module and the flow of the software arithmetic . it also analyses the realization of the module key arithmetic , finally it brings forward some points that should be paid much attention in realizing the module 本文分為四章：第一章介紹了軟件無線電的基本概念、發展狀況；第二章研究了軟件無線電的關鍵技術及所面臨的技術上的挑戰和解決辦法；第三章探討了第三代移動通信技術中的無線接入以及軟件無線電在其中的應用；第四章研究了應用基于dsp的軟件無線電技術來實現第三代移動通信終端的基帶處理模塊，并分析了其前端電路，然后對它的資源需求做了分析，給出了td - scdma基帶模塊的硬件結構和軟件算法流程，對模塊的關鍵算法的實現進行了分析，最后提出了實現模塊應當注意的幾個問題。

On the assumption of ignoring the distortion of thickness , this paper determines the rough shape by the geometric modeling method of equal area developing using mixed mesh cell of triangle and quadrangle for the first time , presents the equal area developing arithmetic of quadrangle - triangle . on the virtual geometric symmetry axis , we puts forward the method of determining the developed coordinate of the point on the base band in the development of using regular quadrangle cell , determines the developed shape of internal structure in plane utilizing point - to - point mapping theory . furthermore , we realize the approximate developing of undeveloped - irregular boundary surface using a few triangle cells 本文結合型號研制中小曲率機翼整體壁板類零件坯料展開課題，基于板料厚向變形忽略不計的先驗假設，首創混合四邊形-三角形網格等面積展開的幾何模擬法確定壁板類零件毛坯外形，給出了混合四邊形-三角形網格等面積展開算法；提出了虛擬分割線的概念，采用虛擬幾何對稱軸，給出了規整四邊形單元展開基帶上結點的計算方法；采用映射原理和求交算法確定了壁板內部結構信息的展開定位。

The scrambling and descrambling technologies include non - disturbing frequency method , analog base band disturbing method , the radio - frequency signal disturbing method , the digital disturbing method for the analog signal and the digital signal disturbing method , etc . after the introduction a project based on the compression of the rf synchronous information is formulated 本文綜述了目前常用的幾種主要的電視信號的加解擾技術，如非擾頻加解擾技術、模擬基帶加解擾技術、射頻信號加解擾技術、模擬信號的數字處理加解擾技術以及數字信號加解擾技術等。

Firstly , the differences between a qpsk system and a tcm - 8psk system , and the difficulties in the latter ’ s realization are considered in detail , including the frequency band utility , the group delay effects , the filters ’ implementation , the base band processing and some key technologies 首先考慮了tcm - 8psk系統與傳統的qpsk系統的不同,以及在實際工程中會遇到的一些困難。包括從整個系統方面考慮的帶寬利用率問題、群延遲問題、濾波器問題和基帶處理等問題,以及實現這樣一個系統的幾種關鍵技術。

Since the cmos technology used in the part of base band design is relatively very mature , it is unreasonable to change the technology of base band . furthermore , due to development of cmos technology , the cut frequency f can be more than soghz . so the cmos rfic design becomes possible 同時，隨著cmos工藝的發展，其截止頻率ft可到50ghz以上，從而使得cmos工藝用于射頻部分成為可能，所以cmos射頻集成電路( radiofrequencyintegratedcircuit ， rfic )設計成為近年來國內外學術界的熱點。

In prototype system , a l - shaped non - uniform linear array with 5 elements is utilized to receive spatial signal with carrier frequency among 2 - 18ghz . the entire frequency band is decomposed into 1ghz sub - bands and then is mixed to 1ghz base band . the base band output of each antenna is sent through a synchronous 250mhz undersampling channels 在本實驗系統中，我們設計了一個5陣元的l型非均勻陣列天線，將的頻段劃分成的子頻段，然后將每個子頻段混頻到的處理基帶后再進行的同步欠采樣。

This paper particularly compares the complexities of the three manners ? the base band complex signal manner 、 the intermediate frequency complex signal manner and the intermediate frequency real signal manner , in the rf circuit and the base band digital signal processing , respectively ; chooses the intermediate frequency complex signal output manner , which not only reduces the complexity of the digital signal processing , but also be compatible with the intermediate frequency real signal output manner in some applications which have strictly request on the consistency of the amplitude and the phase in i / q channels 然而在以往的文獻中很少對此進行過全面的分析。論文詳細比較了三種不同的信號輸出方式? ?基帶復信號、中頻復信號和中頻實信號在rf電路和后端數字信號處理復雜度上的區別;并為接收機選擇了中頻復信號輸出方式,在降低數字信號處理復雜度的同時,還能在某些對i / q雙通道幅相一致性要求嚴格的應用場合兼容中頻實信號輸出方式。

Then , the definition of high order cumulants and the value of digital modulation signals ’ high order cumulants are presented . according to calculate the value of base band signals ’ high order cumulants , 4ask , 2fsk , 4fsk , bpsk , qpsk , 16qam can be distinguished . this method is demonstrated by simulation data and sampled data 接著,本文介紹了高階累積量的定義和多種數字調制信號高階累積量的值,通過計算基帶信號的高階累積量,可以對4ask 、 2fsk 、 4fsk 、 bpsk 、 qpsk 、 16qam六種信號進行分類,利用仿真信號和實際采樣信號對該方法進行了論證,該方法可以在低信噪比條件下實施。

This paper studies using asic ic2001 which is zte independently - developed and dsp from ti company to finish the driver of rake receiver and symbol processing function based on 3g base band . achieving the chip mapping , resource planning , the driver of baseband realization and experimental validation with the developing tool ccs ide supplied by ti company 本文研究運用中興公司自行研發的專用集成芯片ic2001與ti公司的dsp芯片共同完成第三代移動通信( 3g )基帶處理上rake接收機和符號級處理功能的基帶系統驅動,在ti公司提供的開發工具ccs集成環境中完成芯片映射、資源規劃、系統驅動方案實現及進行實驗驗證。

Bringing into play the communication market resources in hangzhou bay , the park devotes itself to the formation of a “ mobile valley ” , which means a unique zhejiang - flavored economic pattern : forming a complete telecommunication industry chain from software and operation development of key parts , such as ic chip , rf modules , base band , display , high capacity battery , to related components like cell phone housing , keypad , antenna , vibration motor , mould , pcb ( circuit board ) , photoelectricity device , electronic device , connectors and system and software development , and operation service development 園區依托杭州灣通信市場資源，致力打造“移動谷” ，創造中國浙江經濟特有的專業版塊模式：從集成電路芯片、 rf組件、基帶、顯示器、高能電池等核心器件到接手機外殼和按鍵、天線、振動馬達、模具、 pcb （電路板） 、光電器件、電子器件、連接件等相關組件及系統和軟件開發、運營服務開發，形成完整的通信產業鏈。

In this paper , a complete scheme is proposed for el wireless spread spectrum modem in tdd mode . firstly , it discusses tdd protocols and base band module . secondly , with in - depth ananysis on hfa3860b and its high speed spread spectrum technology ( mbok ) , we incorporates the chip for continuous and transparent transmission of el data successfully 論文在對hfa3860b進行深入研究的基礎上，對芯片所采用的高速擴頻技術? mbok擴頻技術進行了理論探討，并成功地將其用于e1數據的無線擴頻透明傳輸，實現了系統要求，并且拓寬了芯片的應用范圍。

It has also been proved correct in practice by testing with cooperator . the paper analyzed the character of our radio and introduced the procedure of designed base band frame architecture . it showed the application of channel coding in our radio , and encode / decode method implemented in dsp 本文針對本電臺的特點介紹了基帶幀結構的設計,重點介紹了幾種常用信道編碼在本電臺的應用,以及編解碼方法在dsp中的實現,并從理論上分析了信道編碼給本電臺帶來的處理增益。

With the kernel of base band module , this paper begined with the systematic configuration of ais system , combined with the specific protocol , clearly clarified arithmetic simulation and realization . we certificated the credibility and stability of ais system through the examination , the error is in the permissive range . also it can make sure the safe of navigation , improve marine communication capability , accelerate the development of the navigation for our country 本文從ais系統的整體結構入手,結合具體的協議,以基帶處理模塊為核心,從硬件設計和軟件算法仿真及實現進行詳細的闡述,并且通過試驗證實了ais系統的可靠性和準確性,產生的誤差均在允許的范圍內,能保證航行的安全,提高海上信息傳輸能力,促進我國航海事業的發展。

Radioone 6200 chip for wcdma network can be used in association with modem base band processor of qualcomm s msm6200 mobile station . availability of the chip enables manufacturers to provide cost effective multi - mode 3g handsets to gsm and wcdma market 針對wcdma網絡的radioone6200芯片,與qualcomm的msm6200移動臺modem基帶處理器聯合使用。該芯片的出現使制造商能為gsm和wcdma市場提供成本有效的多模3g手機。

This paper is based on the base band processing design , as the bridge of communication processing module and receiving and sending module , base band module has taken charge of dsp of ais protocol bottom 本文以基帶處理模塊的設計為重點,作為ais通信處理模塊與ais收、發模塊之間的橋梁,基帶處理模塊負責ais協議底層的數字信號處理工作。

In this paper , the driver of wcdma base band system is developed , debugging finished and the expected result achieved . a solid foundation is laid for successfully turning the product to market 所開發的wcdma基帶系統驅動,目前已經完成了調試,并達到了預期的設計目標,將為該產品成功推向市場奠定堅實的基礎。

It is obvious that the part of rf used gaas technology cannot be integrated with the part of base band used cmos technology . so soc is impossible under this circumstance 但是采用gaas工藝的射頻部分不能和采用cmos工藝的基帶部分集成，也即是做不到片上系統，所以基帶部分和射頻部分必須選擇一個相同的工藝。