多用户通信实现的本质就是把可用的资源划分成多个相互正交的资源(互不重叠,或互不相同,或互不干扰的资源)频域资源划分 —FDMA传统的FDMA的频率间隔最小为2× 1/T,“资源互不重叠,互不相同” OFDM频率间隔为1/T,资源部分重叠,但互不干扰; 时间资源划分 —TDMA,资源互不重叠,互不相同; 码字资源划分 —CDMA,资源重叠,但互不干扰;
标签: TD-LTE
上传时间: 2013-11-24
上传用户:liglechongchong
在LTE/SAE、SingleRAN和40G/100G传送技术等前沿技术领域持续创新,确立了在业界的领先地位,这将帮助客户建立长期竞争优势。
上传时间: 2013-10-26
上传用户:康郎
应用MATLAB编程,LTE系统中上行链路SC-FDMA信号生成的程序
上传时间: 2016-06-20
上传用户:epson850
The WCDMA Physical Layer Demo consists of an end-to-end (transmitter-to-receiver) simulation of the Frequency Division Duplex (FDD) Downlink physical layer for several Dedicated Channels (DCH) as specified by the 3GPP standard (Release 99).
标签: transmitter-to-receiver end-to-end simulation Physical
上传时间: 2013-11-28
上传用户:gdgzhym
This a very simple baseband simulator for SC-FDMA system. This simulator is part of the upcoming book “Single Carrier FDMA: A New Air Interface for Long Term Evolution” (Wiley, Nov. 2008) which I co-authored with professor David J. Goodman at Polytechnic University. The purpose of this simulator is to give some concrete idea of how SC-FDMA system works. It does lack many realistic and sophisticated features such as channel coding, time-varying fading channel model, soft decision decoding, etc. Regardless, I am hoping that it will help you understand SC-FDMA which is a fairly new development in 3GPP LTE.
标签: simulator This baseband upcoming
上传时间: 2016-08-26
上传用户:小草123
通信标准研究与开发是通讯行业的制高点。当前发展最为兴旺,潜力最大的莫过于3gpp的3.9G无线通信标准——LTE。本代码实现了从3gpp网站直接下载标准会议提案,配合LTE会议报告轻松获取感兴趣的标准提案,加快工作流程
上传时间: 2014-06-01
上传用户:Amygdala
把地理区域分成一个个小区,蜂窝系统在该区域内提供无线覆盖。把可用的频谱分成很多信道,每个小区分配一组信道。使用频分双工(FDD)。在小区间进行频率利用,N个小区构成一个簇,簇间进行频率复用。定义了传播特性(信道参数)以及同频小区的位置。信道的参数包括:小区半径,路径损耗指数,以分贝为单位的对数正态阴影的标准差,基站发射功率级,移动台发射功率级,每个小区的扇区数,扇区化天线的正反向比,要仿真的瞬时位置的组数,同频干扰阈值。
上传时间: 2013-12-30
上传用户:84425894
3rd Generation Partnership Project Technical Specification Group Radio Access Network Evolved Universal Terrestrial Radio Access [E-UTRA] LTE Physical Layer - General Description
标签: Specification Partnership Generation Technical
上传时间: 2017-03-19
上传用户:小眼睛LSL
The UMTS Physical Layer model consists of an end-to-end (transmitter-to-receiver) simulation of the Frequency Division Duplex (FDD) Downlink physical layer for several Dedicated Channels (DCH) as specified by the 3GPP standard (Release 99).
标签: transmitter-to-receiver end-to-end simulation Physical
上传时间: 2014-01-11
上传用户:it男一枚
下行物理信道的描述,便于有点基础的技术员理解掌握。
标签: LTE
上传时间: 2015-05-13
上传用户:不像你呢等你到家