同步数字复接的设计及其FPGA实现 在简要介绍同步数字复接基本原理的基础上，采用VHDL语言对同步数字复接各组成模块进行了设计，并在ISE集成环境下进行了设计描述、综合、布局布线及时序仿真，取得了正确的设计结果，同时利用中小容量的FPGA实现了同步数字复接功能。 基群速率数字信号的合成设备和分接设备是电信网络中使用较多的关键设备，在数字程控交换机的用户模块、小灵通基站控制器和集团电话中都需要使用这种同步数字复接设备。近年来，随着需要自建内部通信系统的公司和企业不断增多，同步数字复接设备的使用需求也在增加。FPGA(现场可编程门阵列)器件的高性能简化了数字通信系统的设计与实现。本文基于FPGA的技术特点，结合数字复接技术的基本原理，实现了基群速率(2048kbps)数字信号的数字分接与复接。
上传时间： 2013-12-20
上传用户：ommshaggar
TD-SCDMA，1基站1单天线用户系统，瑞利多径信道，联合检测（JD）matlab程序。如需多用户，只需发送端填充用户数据叠加即可。
标签： TD-SCDMA
上传时间： 2017-08-23
上传用户：3到15
采用MICROCHIP单片机，U2270B基站芯片做的读卡器源程序
上传时间： 2017-09-18
上传用户：hebmuljb
AD公司的接收芯片，芯片中包括混频器，放大器，限幅放大器。多用于基站的应用方面。
标签： AD608
上传时间： 2016-01-22
上传用户：dovelz
由于中国电信CDMA网络发展到3G 之后，没有后续演进路线。所以中国电信 必然全力以赴建设基于FDD的NB-IoT 网络，不存在选择上的纠结， 力量用在一 处。5月17日， 中国电信宣布建成全球目前 覆盖最广的商用新一代物联网（NB-IoT） 网络， 实现31万个基站升级。
上传时间： 2018-06-01
上传用户：cc2018
With billions of ‘people and things’ becoming increasingly connected, the need to combine the potential of unlicensed and licensed wireless services has become an imperative for the operators, cities, high density venues and players focused on key market opportunities such as IoT, big data and 5G. The WBA has developed Vision 2020 to harness its experience of creating seamlessly interconnected wireless services in new and emerging areas.
上传时间： 2020-05-26
上传用户：shancjb
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.
标签： Development Caribbean Broadband Markets Mobile
上传时间： 2020-05-26
上传用户：shancjb
Device-to-device(D2D) communications are now considered as an integral part of future 5G networks which will enable direct communication between user equipment (UE) without unnecessary routing via the network infrastructure. This architecture will result in higher throughputs than conventional cellular networks, but with the increased potential for co-channel interference induced by randomly located cellular and D2D UEs.
标签： Device-to-Device Communications Analysis of
上传时间： 2020-05-26
上传用户：shancjb
Wireless technologies like GSM, UMTS, LTE, Wireless LAN and Bluetooth have revolutionized the way we communicate by making services like telephony and Internet access available anytime and from almost anywhere. Today, a great variety of technical publications offer background information about these technologies but they all fall short in one way or another. Books covering these technologies usually describe only one of the systems in detail and are generally too complex as a first introduction. The Internet is also a good source, but the articles one finds are usually too short and super- ficial or only deal with a specific mechanism of one of the systems. For this reason, it was difficult for me to recommend a single publication to students in my telecommunication classes, which I have been teaching in addition to my work in the wireless telecommunication industry. This book aims to change this.
标签： LTE-Advanced From GSM Pro and 5G to
上传时间： 2020-05-27
上传用户：shancjb
The recent developments in full duplex (FD) commu- nication promise doubling the capacity of cellular networks using self interference cancellation (SIC) techniques. FD small cells with device-to-device (D2D) communication links could achieve the expected capacity of the future cellular networks (5G). In this work, we consider joint scheduling and dynamic power algorithm (DPA) for a single cell FD small cell network with D2D links (D2DLs). We formulate the optimal user selection and power control as a non-linear programming (NLP) optimization problem to get the optimal user scheduling and transmission power in a given TTI. Our numerical results show that using DPA gives better overall throughput performance than full power transmission algorithm (FPA). Also, simultaneous transmissions (combination of uplink (UL), downlink (DL), and D2D occur 80% of the time thereby increasing the spectral efficiency and network capacity
标签： Full-Duplex Cells Small
上传时间： 2020-05-27
上传用户：shancjb
