baseband system 中文意思是什麼
baseband system
解釋
基帶系統-
The aim of this paper is to design the baseband circuit of a ds / fh system
本論文主要是設計一個跳擴頻（ ds fh ）系統基帶電路。 -
In this paper, research on the algorithm of complete digital if and baseband transmission system and the realization of transmitter and receiver. / 4 - dqpsk is chosen as digital modulation scheme. the scheme of demodulation is baseband differential detection. sliding correlator can realize the symbol synchronous acquisition ; early - late gate synchronizer is used to do symbol synchronous tracking
系統的發射機選定/ 4 - dqpsk為調制方式，接收機採用基帶差分解調的非相干解調方式，滑動相關器捕獲發送的pn序列，早遲門同步器跟蹤符號同步，使用相關器對同步后的符號進行最佳判決，並在這些演算法實現的基礎上，實現了直接序列擴頻和解擴技術。 -
With the established rf front - end system simulation platform, adding the digital modulated baseband signal, this paper simulated the multifold digital modulated signal ’ s transmission, such as 2ask, qpsk, and 16qam. then researches of power compression and phase noise of local oscillation influence the bit error ratio for different modulated system. the designing is satisfied multifold functions request with the high - powered and integrated broadband rf front - end
隨后在建立的寬帶射頻前端通用模擬平臺上，加入基帶數字調制信號，對多種數字調制格式的信號在該通用平臺上的傳輸作了研究，模擬了2ask 、 qpsk和16qam等調制格式信號的發射與接收，研究了功率壓縮和本振相位噪聲對不同調制的誤碼率影響，實現了滿足多種功能要求的寬帶高性能綜合射頻前端的設計。 -
First, this paper gives a method, which is utilized by baseband system according to wcdma system capability requirements, using asic + dsp to realize raker, using dsp + dsp to realize symbol process. the hardware structure of asic + dsp and dsp + dsp is designed from the whole design view. then, the discussion is made of the main function module of ic2001 and dsp, hi module, dsp peripherals on chip such as hpi, edma and emif
文章首先結合wcdma系統性能要求提出了基帶系統所採用的方案，由asic + dsp實現rake接收機功能和dsp + dsp實現符號級處理功能;然後從總體規劃的角度設計出asic + dsp和dsp + dsp系統硬體結構，對ic2001和dsp的主要功能模塊， hi模塊， dsp片上外設hpi口、 edma和emif總線作了分析，並結合基帶處理功能開發了系統驅動;最後由信號源發出測試數據進入系統，進行功能實現后輸出數據繪制出波形圖，對所設計的基帶系統驅動方案進行驗證分析。 -
Research on distortionless transmission of digital baseband signal of mine monitoring system
礦用監控系統數字基帶信號無失真傳輸的研究 -
The rf receiver consists of rf front end and baseband regulation module. the high - intermediate - frequency superheterodyne structure is adopted in the final scheme. the fine sensitivity of the receiver is achieved by two cascaded lna in the front of the system
系統採用超外差式變頻結構設計，兩級低噪聲放大單元級聯保證了接收機靈敏度，兩級增益控制單元實現了所要求的接收機動態范圍，並且整機的線性度也得到了保證。 -
And typical super heterodyne structure in rereiver part. this scheme benefited to reduce frequency error and phase error, and had the advantages of good dynamic range and selectivity, short exploitation cycle and small venture in the given performance demand, etc. this system implemented a six - layer hoard rf handset model together with baseband by using advanced eda tool veribest 2000
系統設計應用hd155131的gsm900 dcs1800雙頻解決方案，發射機部分主要採用offsetpll方案，該方案有利於減小系統的頻率誤差和相位誤差；接收機部分採用典型的超外差式結構，它具有優良的動態范圍和選擇性，在給定的性能要求下具有開發周期短、風險小等特點。 -
Cto, sr. design engineer, oss bss engineer, wcdma system development engineer test engineer, wcdma baseband senior engineer, telecommunication protocol development engineer, 3g ran system test engineer, rf developer, hardware engineer, mobile phone structure designer, flow - media product manager, softswitch pre - sales engineer, sr. project manager, quality manager, purchase manager, sr. marketing manager oversea, regional product manager, sales manager, key account manager, admin. hr director, administration manager, international recruitment supervisor, financial manager, investment manager
高級總體設計工程師oss bss軟體工程師wcdma系統開發工程師軟體開發測試工程師wcdma基帶高級工程師通信協議開發工程師3g ran系統測試工程師射頻研發人員手機射頻工程師手機硬體工程師手機結構造型設計工程師流媒體產品經理軟交換售前支持工程師高級項目經理知識產權經理品質部經理采購部經理高級海外市場營銷經理區域產品經理銷售經理大客戶經理人事行政總監行政經理國際招聘主管財務經理國際融資主管投資經理 -
The baseband processor and system controller interface in wireless communication, which is utstarcom, the center of researching wireless communication software a part of data transmission passway of simulator of user equipment
無線通信中基帶處理器與系統控制器介面是ut斯達康公司無線通信軟體研究中心設計的userequipment模擬器中的數據傳送通道的一部分。 -
The emphases of this thesis are to implement the ss baseband communication system and to achieve behavior simulation and post - place & route simulation respectively on the platform of ise 4
本論文工作的重點是在ise4開發平臺上具體實現這個擴頻系統，並對系統中的每個模塊和整個系統進行相應的功能模擬和時序時延模擬。 -
Direct modulator converts baseband signal to rf signal without upconvertion. the system design is relatively simple compared to upconversion. so direct modulator provides adventages of compact size, low cost and low spurious response
直接調制將基帶信號直接轉換為射頻信號，不需要二次頻率變換，與上變頻方式相比系統結構簡單，降低了對濾波器的要求，具有體積小，重量輕，成本低等明顯的優點。 -
Because bluetooth technology is a short ranged wireless communication technology, we can use the core of the baseband technology for reference in the wireless pc system, the main idea of this paper
藍牙是近距離無線通信技術，借鑒藍牙基帶協議中的核心技術，研究其在無線pc系統中的應用是本論文的主要內容。 -
This dissertation, basing on simulation, makes a deep research on simulating signal of gmsk ( gaussian filtered minimun frequency shift keying ) baseband modulation and demodulation in ais ( automatic identification system ) equipment. the technology related in the following makes the modulation and demodulation of baseband signal into realization by ti dsp, at the same time, provides a key technique to develop ais system inland
本文著重對自動識別系統（ ais - automaticidentificationsystem ）設備的高斯濾波最小頻移鍵控（ gmsk - gaussianfilteredminimunfrequencyshiftkeying ）基帶調制解調信號進行了模擬研究，並在模擬的基礎上，在ti的dsp上實現了基帶信號的調制解調，為國內研製ais系統儲備了關鍵技術。 -
We build the baseband model of the ar self - encoded spread spectrum system both for a user and multi - user, and do a lot of simulation for the system. in addition, we discuss the performance deeply based on the simulation
本文建立了單用戶及多用戶的ar自編碼擴頻系統的基帶模型，並在模擬結果的基礎上，對該系統的性能進行了更深入的討論。 -
Digital down converter ( ddc ) converts digitized if data into filtered baseband data which can be processed by a standard dsp microprocessor. ddc is a core part of a software defined radio ( sdr ) system
數字下變頻（ ddc : digitaldownconvert ）是將中頻信號數字下變頻至零中頻且使信號速率降至適宜通用dsp器件處理速率的技術。 -
The paper is arranged from up to down. from umts to utran, then nodeb and baseband processing are proposed, at last the downlink symbol rate dsp is the corn and importance of the paper. the paper tries to clear the relationship between systems and system and sub - system, and gives a complete concept to reader
從umts通信系統到utran的結構，然後關注到nodeb和基帶處理系統，最後是下行符號級處理dsp的具體實現。其中最後的實現是論文的核心和重點，論文也力求闡明各個系統之間以及系統與其子系統之間的關系，給讀者一個整體的概念和完整的認識。 -
As a key technolege of wcdma, baseband processing is difficult. the baseband processing is very important to the whole wcdma system. this paper concerns the baseband downlink symbol rate processing of the wcdma, including commond processing module, tti module, adm module, initial module and dsp driver
本論文主要關注wcdma基帶處理系統下行子系統的符號級處理的實現，從命令處理模塊、調度模塊、初始化模塊、業務處理模塊以及dsp的底層驅動幾個方面對下行符號級處理dsp進行了詳細的說明。 -
Chapter iv advances a proposed systematic scheme of power line receivers in accordance with homeplugl. o on the basis of analysis in chapter iii, present the implementation of an ofdm baseband transmission platform based on mpc860t embedded system
第四章在前幾章的理論基礎上，提出了適合於homeplug1 . 0的電力線載波通信接收機的系統方案，同時介紹了基於mpc860t的ofdm基帶傳輸系統平臺的嵌入式實現，對整個平臺的硬體和軟體構成都有較為詳細的介紹。 -
We discussed detailedly the application of parameter - induced stochastic resonance in binary baseband pulse amplitude modulated ( pam ) signal transmission. the system ' s measurements : bit error rate and channel capacity were deduced. the numerical simulation demonstrated our theoretical analyses
我們著重討論了參數誘導的隨機共振在二進制基帶脈沖幅值調制（ pam ）信號傳輸中的應用，詳細推導出了衡量系統傳輸性能的誤碼率和通道容量公式，並利用模擬模型進行了數值模擬，理論分析和模擬結果非常符合。 -
At last, the baseband system structure which deploys smart antenna, rake, and receive / transmit diversity techniques is proposed
最後把智能天線技術和rake接收技術、收發分集技術緊密結合，形成比較完整的智能天線系統基帶結構。
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