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lte

lte（LongTermEvolution，長期演進)是由3GPP（The3rdGenerationPartnershipProject，第三代合作伙伴計劃）組織制定的UMTS（UniversalMobileTelecommunicationsSystem，通用移動通信系統）技術標準的長期演進，于2004年12月在3GPP多倫多會議上正式立項并啟動。lte系統引入了OFDM（OrthogonalFrequencyDivisionMultiplexing，正交頻分復用）和MIMO（Multi-Input&Multi-Output，多輸入多輸出）等關鍵技術，顯著增加了頻譜效率和數據傳輸速率（20M帶寬2X2MIMO在64QAM情況下，理論下行最大傳輸速率為201Mbps，除去信令開銷后大概為150Mbps，但根據實際組網以及終端能力限制，一般認為下行峰值速率為100Mbps，上行為50Mbps），并支持多種帶寬分配：1.4MHz，3MHz，5MHz，10MHz，15MHz和20MHz等，且支持全球主流2G/3G頻段和一些新增頻段，因而頻譜分配更加靈活，系統容量和覆蓋也顯著提升。[1]

  • ccsv6

    詳細描述TD-lte基本原理， 是無線通信經典教材

    標簽： TD-lte技術原理·

    上傳時間： 2016-06-13

    上傳用戶：mikexjmeng

  • DTM.PX3.016.102-TD-lte協議與信令

    關于通信專業的信令與協議，講的很詳細，可以學到很多知識的總結資料。

    標簽： 016.102 TD-lte DTM PX3 協議 信令

    上傳時間： 2017-10-18

    上傳用戶：guomiao

  • 物理上行控制信道符號的產生

    物理上行控制信道PUCCH，用于承載上行鏈路控制信息，根據所承載的上行控制信息的不同，lte物理層支持不同的PUCCH格式，采用不同的發送方式。

    標簽： 物理 上行 控制 信道 符號

    上傳時間： 2018-01-04

    上傳用戶：wwjj173

  • 3GPP協議

    3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Further advancements for E-UTRA; lte-Advanced feasibility studies in RAN WG4 (Release 9)

    標簽： 3GPP 協議

    上傳時間： 2018-04-28

    上傳用戶：doforfuture

  • 3G,+4G+and+Beyond–BRINGING NETWORKS

    In recent years, cellular voice networks have transformed into powerful packet-switched access networks for both voice communication and Internet access. Evolving Universal Mobile Telecommunication System (UMTS) networks and first Long Term Evolution (lte) installations now deliver bandwidths of several megabits per second to individual users, and mobile access to the Internet from handheld devices and notebooks is no longer perceived as slower than a Digital Subscriber Line (DSL) or cable connection. Bandwidth and capacity demands, however, keep rising because of the increasing number of people using the networks and because of bandwidth-intensive applications such as video streaming. Thus, network manufacturers and network operators need to find ways to continuously increase the capacity and performance of their cellular networks while reducing the cost.

    標簽： BRINGING NETWORKS Beyond and 3G 4G

    上傳時間： 2020-05-26

    上傳用戶：shancjb

  • Caribbean Markets : Mobile Broadband Development

    4G Americas is an industry trade organization composed of leading telecommunications service providers and manufacturers. The organization's mission is to advocate for and foster the advancement and full capabilities of the lte mobile broadband technology and its evolution beyond to 5G, throughout the ecosystem's networks, services, applications and wirelessly connected devices in the Americas. 4G Americas, the voice of 5G for the Americas, is invested in leading 5G development for the Americas and maintaining the current global innovation lead in North America with lte technology.

    標簽： Development Caribbean Broadband Markets Mobile

    上傳時間： 2020-05-26

    上傳用戶：shancjb

  • 2015_01_3GPP_unlicensed_Dino_Flore

    Licensed spectrum remains 3GPP operators’ top priority to deliver advanced services and user experience Opportunistic use of unlicensed spectrum is becoming an important complement for operators to meet the growing traffic demand Moving forward 3GPP operators will have two options to offload traffic to unlicensed spectrum: 1. Wi-Fi (via lte/Wi-Fi interworking) 2. lte over unlicensed It will then be up to each individual operator to choose which approach to use, which will depend on a number of factors

    標簽： 3GPP_unlicensed_Dino_Flore 2015 01

    上傳時間： 2020-05-26

    上傳用戶：shancjb

  • Continuous-Time+Digital+Front-Ends

    The book you’re holding, physically or electronically, is the result of a very interesting, challenging but also rewarding research project. The research was carried out in different contexts and cooperations but it was centered around the following question: how can we make the RF transmitters of our modern com- munication systems (WiFi, GSM, lte, and so on) more flexible and more efficient at the same time.

    標簽： Continuous-Time Front-Ends Digital

    上傳時間： 2020-05-27

    上傳用戶：shancjb

  • Essentials+of+lte+and+lte-A

    The next-generation wireless broadband technology is changing the way we work, live, learn, and communicate through effective use of state- of-the-art mobile broadband technology. The packet-data-based revolu- tion started around 2000 with the introduction of 1x Evolved Data Only (1xEV-DO) and 1x Evolved Data Voice (1xEV-DV) in 3GPP2 and High Speed Downlink Packet Access (HSDPA) in 3GPP. The wireless broad- band fourth-generation technology (4G) is an evolution of the packet- based 3G system and provides a comprehensive evolution of the Universal Mobile Telecommunications System specifications so as to remain competitive with other broadband systems such as 802.16e (WiMAX)

    標簽： Essentials lte-A lte and of

    上傳時間： 2020-05-27

    上傳用戶：shancjb

  • lte, WiMAX and WLAN

    For nearly a hundred years telecommunications provided mainly voice services and very low speed data (telegraph and telex). With the advent of the Internet, several data services became mainstream in telecommunications; to the point that voice is becoming an accessory to IP-centric data networks. Today, high-speed data services are already part of our daily lives at work and at home (web surfing, e-mail, virtual private networks, VoIP, virtual meetings, chats...). The demand for high-speed data services will grow even more with the increasing number of people telecommuting.

    標簽： WiMAX WLAN lte and

    上傳時間： 2020-05-27

    上傳用戶：shancjb

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