中英對照3G技術(shù)與藍(lán)牙技術(shù)英語學(xué)術(shù)翻譯文獻(xiàn)材料

1、3G技術(shù)與藍(lán)牙技術(shù)概述3G技術(shù)和藍(lán)牙技術(shù)是目前熱門技術(shù)，它們也是即將改變我們生活的新一代通信技術(shù)。所謂“3G”（英語：3rd-generation）或“三代”是第三代移動通信技術(shù)的簡稱，是指支持高速數(shù)據(jù)傳輸?shù)姆涓C移動通訊技術(shù)。3G服務(wù)能夠同時傳送聲音(通話)及數(shù)據(jù)信息(電子郵件、即時通信等)。代表特征是提供高速數(shù)據(jù)業(yè)務(wù)。相對第一代模擬制式手機(jī)(1G)和第二代GSM、CDMA等數(shù)字手機(jī)(2G)，第三代手機(jī)（3G）一般地講，是指將無線通信與國際互聯(lián)網(wǎng)等多媒體通信結(jié)合的新一代移動通信系統(tǒng)。3G與2G的主要區(qū)別是在傳輸聲音和數(shù)據(jù)的速度上的提升，它能夠在全球范圍內(nèi)更好地實(shí)現(xiàn)無線漫游，并處理圖像、音樂、視

2、頻流等多種媒體形式，提供包括網(wǎng)頁瀏覽、電話會議、電子商務(wù)等多種信息服務(wù)，同時也要考慮與已有第二代系統(tǒng)的良好兼容性。為了提供這種服務(wù)，無線網(wǎng)絡(luò)必須能夠支持不同的數(shù)據(jù)傳輸速度，也就是說在室內(nèi)、室外和行車的環(huán)境中能夠分別支持至少2Mbps(兆比特/每秒)、384kbps(千比特/每秒)以及144kbps的傳輸速度。而所謂藍(lán)牙(Bluetooth)技術(shù)，實(shí)際上就是取代數(shù)據(jù)電纜的短距離無線通信技術(shù)，通過低帶寬電波實(shí)現(xiàn)點(diǎn)對點(diǎn)，或點(diǎn)對多點(diǎn)連接之間的信息交流。它是實(shí)現(xiàn)語音和數(shù)據(jù)無線傳輸?shù)拈_放性規(guī)范，是一種低成本、短距離的無線連接技術(shù)。3G技術(shù)介紹3G技術(shù)標(biāo)準(zhǔn)一共有三種：它們分別是TD-SCDMA（中國版）、W

3、CDMA（歐洲版）和CDMA2000（美國版）。下面就分別介紹一下三種技術(shù)：l TD-SCDMATD-SCDMA（Time Division-Synchronous Code Division Multiple Access），即時分同步的碼分多址技術(shù)，是ITU正式發(fā)布的第三代移動通信空間接口技術(shù)規(guī)范之一，也是中國制定的3G標(biāo)準(zhǔn)。1999年6月29日，中國原郵電部電信科學(xué)技術(shù)研究院（現(xiàn)大唐電信）向ITU提出了該標(biāo)準(zhǔn)。該標(biāo)準(zhǔn)將智能天線、同步CDMA和軟件無線電（SDR）等技術(shù)融于其中，可以減少用戶間干擾，從而提高頻譜利用率。另外，由于中國龐大的通信市場，該標(biāo)準(zhǔn)受到各大主要電信設(shè)備制造廠商的重視，

4、全球一半以上的設(shè)備廠商都宣布可以生產(chǎn)支持TD-SCDMA標(biāo)準(zhǔn)的電信設(shè)備。TD-SCDMA在頻譜利用率、對業(yè)務(wù)支持具有靈活性、頻率靈活性及成本等方面有獨(dú)特優(yōu)勢。TD-SCDMA由于采用時分雙工，上行和下行信道特性基本一致，因此，基站根據(jù)接收信號估計(jì)上行和下行信道特性比較容易。TD-SCDMA還具有TDMA的優(yōu)點(diǎn)，可以靈活設(shè)置上行和下行時隙的比例而調(diào)整上行和下行的數(shù)據(jù)速率的比例，特別適合因特網(wǎng)業(yè)務(wù)中上行數(shù)據(jù)少而下行數(shù)據(jù)多的場合。但是這種上行下行轉(zhuǎn)換點(diǎn)的可變性給同頻組網(wǎng)增加了一定的復(fù)雜性。TD-SCDMA是時分雙工，不需要成對的頻帶。因此，和另外兩種頻分雙工的3G標(biāo)準(zhǔn)相比，在頻率資源的劃分上更加靈活

5、。一般認(rèn)為，TD-SCDMA由于智能天線和同步CDMA技術(shù)的采用，可以大大簡化系統(tǒng)的復(fù)雜性，適合采用軟件無線電技術(shù)，因此，設(shè)備造價(jià)可望更低。但是，由于時分雙工體制自身的缺點(diǎn)，TD-SCDMA被認(rèn)為在終端允許移動速度和小區(qū)覆蓋半徑等方面落后于其他體制。而且，TD只可以在線500人，還依然是個問題。l WCDMAW-CDMA（Wideband CDMA）是一種由3GPP具體制定的，基于GSM MAP核心網(wǎng)，UTRAN（UMTS陸地?zé)o線接入網(wǎng)）為無線接口的第三代移動通信系統(tǒng)。目前WCDMA有Release 99、Release 4、Release 5、Release 6等版本。W-CDMA（寬帶碼分

6、多址）是一個ITU(國際電信聯(lián)盟)標(biāo)準(zhǔn)，它是從碼分多址（CDMA）演變來的，與現(xiàn)在市場上通常提供的技術(shù)相比，它能夠?yàn)橐苿雍褪痔釤o線設(shè)備提供更高的數(shù)據(jù)速率。WCDMA采用直接序列擴(kuò)頻碼分多址（DS-CDMA）、頻分雙工（FDD）方式，碼片速率為3.84Mcps，載波帶寬為5MHz。基于Release 99/Release 4版本，可在5MHz的帶寬內(nèi)，提供最高384kbps的用戶數(shù)據(jù)傳輸速率。W-CDMA能夠支持移動/手提設(shè)備之間的語音、圖象、數(shù)據(jù)以及視頻通信，速率可達(dá)2Mb/s（對于局域網(wǎng)而言）或者384Kb/s（對于寬帶網(wǎng)而言）。輸入信號先被數(shù)字化，然后在一個較寬的頻譜范圍內(nèi)以編碼的擴(kuò)頻模式

7、進(jìn)行傳輸。l CDMA 2000CDMA 2000即為CDMA2000 1×EV，是一種3G移動通信標(biāo)準(zhǔn)。分兩個階段：CDMA2000 1×EV-DO（Data Only），采用話音分離的信道傳輸數(shù)據(jù)，和CDMA2000 1×EV-DV（Data and Voice），即數(shù)據(jù)信道與話音信道合一。CDMA2000也稱為CDMA Multi-Carrier，由美國高通北美公司為主導(dǎo)提出，摩托羅拉、Lucent和後來加入的韓國三星都有參與，韓國現(xiàn)在成為該標(biāo)準(zhǔn)的主導(dǎo)者。這套系統(tǒng)是從窄頻CDMA One數(shù)字標(biāo)準(zhǔn)衍生出來的，可以從原有的CDMA One結(jié)構(gòu)直接升級到3G，建設(shè)

8、成本低廉。但目前使用CDMA的地區(qū)只有日、韓和北美，所以CDMA2000的支持者不如W-CDMA多。不過CDMA2000的研發(fā)技術(shù)卻是目前各標(biāo)準(zhǔn)中進(jìn)度最快的，許多3G手機(jī)已經(jīng)率先面世。CDMA2000是一個3G移動通訊標(biāo)準(zhǔn),國際電信聯(lián)盟ITU的IMT-2000標(biāo)準(zhǔn)認(rèn)可的無線電接口，也是2G CDMA標(biāo)準(zhǔn)(IS-95,標(biāo)志CDMA1X)的延伸。根本的信令標(biāo)準(zhǔn)是IS-2000。CDMA2000與另一個主要的3G標(biāo)準(zhǔn)W-CDMA不兼容。CDMA2000有多個不同的類型。下面按照復(fù)雜度排列：CDMA2000 1x、CDMA2000 1xRTT（RTT無線電傳輸技術(shù)）、CDMA2000 1xEV(Evo

9、lution發(fā)展)。3G技術(shù)應(yīng)用l 寬帶上網(wǎng)寬帶上網(wǎng)是3G手機(jī)的一項(xiàng)很重要的功能，屆時我們能在手機(jī)上收發(fā)語音郵件、寫博客、聊天、搜索、下載圖鈴等l 視頻通話3G時代,傳統(tǒng)的語音通話已經(jīng)是個很弱的功能了，到時候視頻通話和語音信箱等新業(yè)務(wù)才是主流，傳統(tǒng)的語音通話資費(fèi)會降低，而視覺沖擊力強(qiáng)，快速直接的視頻通話會更加普及和飛速發(fā)展。依靠3G網(wǎng)絡(luò)的高速數(shù)據(jù)傳輸，3G手機(jī)用戶也可以“面談”了。當(dāng)你用3G手機(jī)撥打視頻電話時，不再是把手機(jī)放在耳邊，而是面對手機(jī)，再戴上有線耳麥或藍(lán)牙耳麥，你會在手機(jī)屏幕上看到對方影像，你自己也會被錄制下來并傳送給對方。l 手機(jī)電視手機(jī)流媒體軟件會成為3G時代最多使用的手機(jī)電視軟

10、件，在視頻影像的流暢和畫面質(zhì)量上不斷提升，突破技術(shù)瓶頸，真正大規(guī)模被應(yīng)用。l 無線搜索對用戶來說，這是比較實(shí)用型的移動網(wǎng)絡(luò)服務(wù)，也能讓人快速接受。隨時隨地用手機(jī)搜索將會變成更多手機(jī)用戶一種平常的生活習(xí)慣。l 手機(jī)音樂手機(jī)音樂是最為亮麗的一道風(fēng)景線，通過手機(jī)上網(wǎng)下載音樂是電腦的50倍。3G時代，只要在手機(jī)上安裝一款手機(jī)音樂軟件，就能通過手機(jī)網(wǎng)絡(luò)，隨時隨地讓手機(jī)變身音樂魔盒，輕松收納無數(shù)首歌曲，下載速度更快，耗費(fèi)流量幾乎可以忽略不計(jì)。l 手機(jī)購物高速3G可以讓手機(jī)購物變得更實(shí)在，高質(zhì)量的圖片與視頻會話能使商家與消費(fèi)者的距離拉近，提高購物體驗(yàn)，讓手機(jī)購物變?yōu)樾鲁绷?。l 手機(jī)網(wǎng)游3G時代到來之后，游戲

11、平臺會更加穩(wěn)定和快速，兼容性更高，即“更好玩了”，像是升級的版本一樣，讓用戶在游戲的視覺和效果方面感覺更有體驗(yàn)。藍(lán)牙技術(shù)介紹藍(lán)牙(Bluetooth)技術(shù)，實(shí)際上就是取代數(shù)據(jù)電纜的短距離無線通信技術(shù)。利用“藍(lán)牙”技術(shù)，能夠有效地簡化掌上電腦、筆記本電腦和移動電話手機(jī)等移動通信終端設(shè)備之間的通信，也能夠成功地簡化以上這些設(shè)備與因特網(wǎng)Internet之間的通信，從而使這些現(xiàn)代通信設(shè)備與因特網(wǎng)之間的數(shù)據(jù)傳輸變得更加迅速高效，為無線通信拓寬道路。Bluetooth技術(shù)在2.4 GHz波段運(yùn)行，該波段是一種無需申請?jiān)S可證的工業(yè)、科技、醫(yī)學(xué)(ISM)無線電波段。因此，使用Bluetooth技術(shù)不需要支付任

12、何費(fèi)用。從而Bluetooth技術(shù)得到了空前廣泛的應(yīng)用，集成該技術(shù)的產(chǎn)品從手機(jī)、汽車到醫(yī)療設(shè)備，使用該技術(shù)的用戶從消費(fèi)者、工業(yè)市場到企業(yè)等等，不一而足。低功耗，小體積以及低成本的芯片解決方案使得Bluetooth技術(shù)甚至可以應(yīng)用于極微小的設(shè)備中。至今Bluetooth無線技術(shù)已是市場上支持范圍最廣泛，功能最豐富且安全的無線標(biāo)準(zhǔn)。藍(lán)牙技術(shù)應(yīng)用l 居家通過使用Bluetooth技術(shù)產(chǎn)品，鼠標(biāo)、鍵盤、打印機(jī)、膝上型計(jì)算機(jī)、耳機(jī)和場聲器等均可以在PC環(huán)境中無線使用。此外，通過在移動設(shè)備和家用PC之間同步聯(lián)系人和日歷信息，用戶可以隨時隨地存取最新的信息。l 工作啟用Bluetooth的設(shè)備能夠創(chuàng)建自己的

13、即時網(wǎng)絡(luò)，讓用戶能夠共享文件。Bluetooth設(shè)備還能能召開小組會議，通過無線網(wǎng)絡(luò)與其它辦公室進(jìn)行對話。l 途中具有Bluetooth技術(shù)的手機(jī)、PDA、膝上型計(jì)算機(jī)、耳機(jī)和汽車等能夠在旅途中實(shí)現(xiàn)免提通信。如使用車載免提藍(lán)牙等可以再開車的同時接聽電話。啟用Bluetooth的便攜設(shè)備能夠通過啟用Bluetooth的手機(jī)，使用GPRS、EDGE或UMTS移動網(wǎng)絡(luò)無線地將PC和PDA連接到Internet。l 娛樂使用Bluetooth技術(shù)的無線耳機(jī)可以欣賞MP3播放器里的音樂。使用Bluetooth技術(shù)也可以發(fā)送照片到打印機(jī)或朋友的手機(jī)，更可以連接玩游戲。總結(jié)3G技術(shù)是新一代推廣開來的技術(shù)，在

14、歐美日韓等國家已經(jīng)基本成熟，而在在中國才剛剛起步，還存在著很多的問題與難題，這都是對技術(shù)提供者的機(jī)遇與挑戰(zhàn)。中國同時啟用了三種不同才3G標(biāo)準(zhǔn)，并且合并出了三大運(yùn)營商，給我們消費(fèi)者提供了更多的選擇和體驗(yàn)新技術(shù)的途徑。雖然3G技術(shù)對通信改善與推進(jìn)有著不可磨滅的作用，但藍(lán)牙技術(shù)也是一種對3G不可缺少的補(bǔ)充。藍(lán)牙技術(shù)憑借著簡單易用，成本低廉的特性是滿足短距離傳輸?shù)淖罴堰x擇，免費(fèi)和全球通用將使藍(lán)牙技術(shù)成為我們生活的好幫手。當(dāng)3G技術(shù)和藍(lán)牙技術(shù)完全融入我們的生活時，我們的生活將變得更加豐富多彩。心得體會無論是哪一種3G技術(shù)，亦或是藍(lán)牙技術(shù)，都是人類智慧的結(jié)晶。每一代的技術(shù)革新，尤其是通信技術(shù)的更新，都會給

15、人們的生活帶來巨大的改變。這讓我想起了古代的通信，像飛鴿傳書，像幾百里加急，像烽火臺的狼煙等等，這些原始的通訊方法造成了人與人之間溝通的阻礙，讓你們都變得像井底之蛙一樣。當(dāng)?shù)搅爽F(xiàn)代，我們有了越來越多的通訊方式，E-mail，短信，電話，網(wǎng)絡(luò)，IM等等都提供了廣大的平臺給我們?nèi)ソ涣?，去發(fā)現(xiàn)，宅在家中，卻胸懷世界。聽說過一個詞，叫“三網(wǎng)融合”，也許不久的將來，我們的電子通信網(wǎng)絡(luò)，計(jì)算機(jī)互聯(lián)網(wǎng)絡(luò)，還有廣播電視網(wǎng)絡(luò)將會逐漸融合成一個更廣闊的網(wǎng)絡(luò)，這就是通信技術(shù)的發(fā)展說導(dǎo)致的吧。尤其是3G，讓無限網(wǎng)絡(luò)能更好的連接上固網(wǎng)，也讓我們能看上廣電網(wǎng)的內(nèi)容，這是一副美好的愿景，但它距離我們已經(jīng)不遙遠(yuǎn)了。我相信，我

16、們老百姓的生活將會隨著通信技術(shù)的發(fā)展而變得更加美好，更加幸福。明年，中國又將要提交4G標(biāo)準(zhǔn)的方案，再一次加入到通信標(biāo)準(zhǔn)的爭奪之中。在3G上我們雖然通過了標(biāo)準(zhǔn)的認(rèn)可，但是起步較晚，與成熟的3G標(biāo)準(zhǔn)拉開了差距。但這次我們都又一次站在了同一起跑線，祝愿中國的標(biāo)準(zhǔn)能獲得世界的認(rèn)可，中國的標(biāo)準(zhǔn)能引領(lǐng)通訊業(yè)的發(fā)展。好運(yùn)，中國！3G technology with bluetooth technologysummary3G technology and bluetooth is currently popular technology, they are also imminent changes our

17、life in the new generation of wireless communication technology.The so-called "3G" (English: law - are) or "three generations" is the third generation mobile communication technology abbreviation, refers to support the high-speed data transmission of cellular mobile communication

18、 technology. 3G service can simultaneously transmit sound (calls) and data information (E-mail, instant communication, etc.). Representative characteristics is to provide high speed data business. The first generation of simulation shape.whether relatively cell phone (1G) and the second generation G

19、SM, CDMA etc digital phone (2G), the third generation (3G) mobile phone broadly speaking, it is to point to will wireless communication with international Internet and multimedia communication combination of the new generation mobile communication system. 3G and 2gb the main difference is in the tra

20、nsmission of voice and data speed of ascension, it can globally better realize wireless roaming, and deal with the images, video music, etc. Various media forms, including web browsing, telephone meetings, e-commerce, a variety of information services, also want to consider the second generation sys

21、tem with existing good compatibility. In order to provide this service, the wireless network must be able to support different transmission speeds, that is to say, in indoor and outdoor and driving environments to separate support at least 2Mbps (megabit per second), 384kbps (1000 bits per second) a

22、nd 144kbps transmission speed.The so-called Bluetooth (Bluetooth) technology, is actually replace data cable short-range wireless communication technology, through the low bandwidth waves realize point-to-point, or point-to-multipoint connections between the information exchange. It is the realizati

23、on of the wireless transmission of voice and data open standard, it is a kind of low cost, short range wireless connection technique.3G technology is introduced3G technology standard is one of three kinds: they were td-scdma (Chinese edition), WCDMA (Europe edition) and CDMA2000 (American edition).

24、Here introduce three technological respectively:l td-scdmaTd-scdma (a Synchronous Code Division Multiple Access - Division), namely the Code Division Multiple Access (cdma) portion of Synchronous technology, is ITU officially issued the third generation mobile communication space interface of techni

25、cal specificationsA, but also China 3G standards formulated.In 1999, June 29, China telecom science and technology research institute original post and telecommunications datang telecommunications) (now to the ITU proposed standards. The criteria of smart antenna, synchronous CDMA and software radio

26、 (SDR) technology into among them, can reduce interference between users, so as to improve the frequency spectrum utilization. In addition, because China's huge communications market, the standard by every major telecommunications equipment manufacturer's attention, more than half of global

27、factory shangdu announced can produce support td-scdma standard telecommunication equipment.Td-scdma in spectrum utilization, for business support flexible and frequency flexibility and cost is the special advantage. Td-scdma due to the cream-and-green duplex, ascending and descending channel charac

28、teristic, therefore, is basically the same base station according to receiving signals estimate ascending and descending channel characteristic is easier.Td-scdma also has the advantages of TDMA, flexible setup ascending and descending time buttress proportion and adjust the ascending and descending

29、 data rate of proportion, especially suitable for Internet business uplink data is little and downlink data public. But the uplink downlink cue for the variability of the same frequencies and networking increased certain complexity.Td-scdma is cream-and-green duplex, do not need pairs of band. There

30、fore, and two other frequency division duplex 3G standards, compared to the frequency resource differentiate on more flexible. Generally, td-scdma because of smart antenna and synchronous CDMA technology adoption, and can greatly simplified system's complexity, suits to use software radio techno

31、logy, therefore, the equipment cost is expected to lower. However, due to the cream-and-green duplex system of our shortcomings, td-scdma are considered in the terminal allows movement speed and small area covering radius aspects lag behind other system. Moreover, TD can only online 500 people, stil

32、l remains a problem.WCDMAW - Wideband CDMA (CDMA) is a kind of specific formulated by the 3GPP, based on GSM MAP core network, wireless access network UTRAN (UMTS land for the wireless interface) the third generation mobile communication system. Currently WCDMA have Release 99, Release of 4, 5, 6 et

33、c Release Release version.W - CDMA (broadband CDMA) is an international telecommunication union (ITU) the standard, it is from code division multiple access (CDMA) evolved, and on the market now generally provide technical, compared to move and portable wireless devices provide higher data rate.WCDM

34、A adopt direct sequence spread spectrum code division multiple access (CDMA), DS - frequency division full-duplex (FDD) mode, code piece rate for 384 Mcps, carrier bandwidth for 5MHz. Based on Release 99 / Release version 4, can be in 5MHz bandwidth inside, provides the highest 384kbps user data tra

35、nsfer rate.W - CDMA mobile/portable devices that can support between the voice, video, data and video communication, rate can reach 2Mb/s (concerned) or for LAN 384Kb/s (for broadband network terms). Input signal by digital first, and then in a wider spectrum range in a coded spread spectrum model f

36、or transmission.l CDMA 2000CDMA 2000 namely for CDMA2000 1 x EV, is a kind of 3G mobile communication standards. Is divided into two phases: CDMA2000 1 x ev-do (Data campaigns), USES Voice separate channel transmission Data, and CDMA2000 1 x EV - DV (Data and Voice), namely Data channel and voice-gr

37、ade channels syncretic.CDMA2000 also called CDMA Multi - Carrier by the United States qualcomm north American company as the leading puts forward, MOTOROLA, Lucent and later joining of South Korea's samsung have participation, South Korea now become the standard curve. This system from narrowban

38、d CDMA a-one digital standard derivatives, can from the original CDMA a-one structure directly to upgrade to 3G, construction cost. But currently using CDMA of area only to Japan, South Korea and North America, so CDMA2000 supporters as W - CDMA. But CDMA2000 research technology is currently each st

39、andardIn the fastest progress prospective, many 3G mobile phone have first appeared.CDMA2000 IS a 3G mobile communication, the international telecommunication union (ITU standard of IMT - 2000 international standard, IS approved by the radio interface 2G CDMA standards (IS - 95, mark CDMA1X) of elon

40、gation. Fundamental signaling standard IS IS - 2000. CDMA2000 with another major 3G standard W - CDMA not compatible.CDMA2000 with several different types. Below according to complexity order: CDMA2000 CDMA2000 1xRTT (1x, RTT - radio transmission technology), 1xEV (CDMA2000 similarities - developmen

41、t).3G technology applicationl broadband Internet accessBroadband Internet access is 3G mobile phone of a very important function, then we can cellphones transceiver voice mail, blog, chat, search, download TuLing etc.l video calls3G era, the traditional voice calls has been a very weak function, the

42、n video calls and voicemail and other new business is the mainstream, the traditional voice calls charges can be reduced, and the visual impulse is strong, fast direct video calls will be more popularity and rapid development.Rely on 3G networks of high-speed data transmission, 3G mobile phone users

43、 can also "interview". When you use 3G mobile phone call video phone, is no longer the phone on the ear, but face the cellular phone, again put on cable headset or bluetooth headset, you will see each other on the phone's screen image, you will be recorded down and send each other.l mo

44、bile televisionMobile streaming software will become 3G era use at most mobile TV, video images in software fluent and picture quality on rising, breach the technical bottleneck, real large-scale being applied.wireless searchFor users, it is more practical use of mobile network service, also can let

45、 a person rapid acceptance. Anytime by mobile phone search will become more mobile phone users in a normal life habit.l mobile musicMobile phone music is one of the brightest attraction, through mobile Internet download music is a computer 50 times. 3G era, as long as installed on mobile phones a mo

46、bile phone music software, can by mobile network and anytime makes mobile music magic box, relaxed change receive countless songs, load faster, expend flow almost negligible.Shopping l mobile phoneHigh-speed 3G mobile phone can make shopping become more reality, high quality images and video convers

47、ation can make business and consumers of close, improve shopping experience, keep the cell phone shopping into new trend.l mobile wilfing3G era after game platform are more stable and rapid, compatibility higher, namely "better", like updated version is same, let users in the game of visua

48、l and effect of feel more experience.Bluetooth technology is introducedBluetooth (Bluetooth) technology, is actually replace data cable short-range wireless communications technology.Use "bluetooth technology can effectively simplified pocket PC, laptop computers and mobile phone mobile communi

49、cations terminal equipment of communication between the, also can successfully simplified these equipment and Internet communications between Internet, thus make these modern communication equipment and the Internet data transfer between become more quickly and efficiently, for wireless communicatio

50、n widen roads.Bluetooth technology in 2.4 GHz band operation, this band is a without licensing of industry, science and technology, medicine (ISM) radio wavelengths. Therefore, using Bluetooth technology does not need any fee.Thus Bluetooth technology to enjoy unprecedented widely, integration of th

51、is technology products from mobile phones, automotive to medical equipment, using the technology of users from consumer, industrial market to enterprise, etc., and the like. Low power consumption, small volume and low-cost chip solutions enable Bluetooth technology can be applied to even the smalles

52、t of equipment.Bluetooth wireless technology has already on the market is the most extensive, the function scope supported the most abundant and safe wireless standards.Bluetooth technology applicationl homeThrough the use of Bluetooth technology products, mouse, keyboard, printer, laptop computers,

53、 headset and field acoustic machines etc all can in PC environment wireless use. In addition, through the mobile device and household PC synchronization between calendar contact and information, the user can access the latest information at anytime.summary3G technology is a new generation of wider t

54、heme of technology, in euramerican as Japan and South Korea have basic mature, and in China has just started, still exist many questions and problems, this is all to technology providers of challenges and opportunities. China has also unveiled three different to 3G standards, and merge out three ope

55、rator, give us consumers provides more choice and experience new technical approach.Although 3G technology to improve and promote communication with indelible function, but the bluetooth technology is also a kind of indispensable supplement to 3G. Bluetooth technology with simple to use, cheap characteristics is to satisfy the best choice of the short distance transmission, free and universal will make bluetooth t