source code to simulate wireless network with ad hoc. the source sends info to destination using multihop to reach the base STATION.
标签： source destination simulate wireless
上传时间： 2017-06-13
上传用户：sqq
用于地铁报站的虚拟仪器，用于学习交流控制的Labwiew
标签： Railway STATION
上传时间： 2015-05-19
上传用户：wuseshikong
wifi模块，RAK411 是一款完全符合802.11b/g/n 无线协议的Wi-Fi 模块，内部集成完整的TCP/IP 协议栈，支 持ARP、IP、ICMP、TCP 、UDP、DHCP CLIENT、DHCP SERVER、DNS 等多种协议。支持AP 模式， STATION 及Ad-hoc。用户可以方便、快速地使用模块实现组网及数据收发。在SPI 接口下，模块最大传输 速率可达2Mbps。
上传时间： 2018-05-17
上传用户：luke242
利用ESP8266作为AP或STATION连接互联网，实现通信TDP/DUP通信。
上传时间： 2018-06-15
上传用户：菲K顶B虾
汉中路到了。开左边门，下车请注意安全。We are now at Hanzhong Road . Doors will open on the left。 本次列车终点站上海火车站。下一站终点站上海火车站，开左边门。使用公交卡的乘客可在出站后30分钟内换乘3号线、4号线，请注意换成列车的首末班车时间。打开metro大都会手机数码乘地铁。 Nest stop is the termina.STATION ShanghaiRailway STATION.Roors will open on the lift. 终点站上海火车站到了。开左边门。下车请注意安全。请全体乘客下车。We are now at the termina.STATION Shanghai Railway STATION Roors will open on the lift.
上传时间： 2019-07-05
上传用户：coolmen
Multiuser multiple-input-multiple-output (MU- MIMO) systems are known to be hindered by dimensionality loss due to channel state information (CSI) acquisition overhead. In this paper, we investigate user-scheduling in MU-MIMO systems on account of CSI acquisition overhead, where a base STATION dynamically acquires user channels to avoid choking the system with CSI overhead.
标签： Acquisition Dynamic Channel
上传时间： 2020-05-27
上传用户：shancjb
The General Packet Radio Service (GPRS) allows an end user to send and receive data in packet transfer mode within a public land mobile network (PLMN) without using a permanent connection between the mobile STATION (MS) and the external network during data transfer. This way, GPRS opti- mizes the use of network and radio resources (RRs) since, unlike circuit- switched mode, no connection between the MS and the external network is established when there is no data flow in progress. Thus, this RR optimiza- tion makes it possible for the operator to offer more attractive fees.
上传时间： 2020-05-27
上传用户：shancjb
To meet the future demand for huge traffic volume of wireless data service, the research on the fifth generation (5G) mobile communication systems has been undertaken in recent years. It is expected that the spectral and energy efficiencies in 5G mobile communication systems should be ten-fold higher than the ones in the fourth generation (4G) mobile communication systems. Therefore, it is important to further exploit the potential of spatial multiplexing of multiple antennas. In the last twenty years, multiple-input multiple-output (MIMO) antenna techniques have been considered as the key techniques to increase the capacity of wireless communication systems. When a large-scale antenna array (which is also called massive MIMO) is equipped in a base-STATION, or a large number of distributed antennas (which is also called large-scale distributed MIMO) are deployed, the spectral and energy efficiencies can be further improved by using spatial domain multiple access. This paper provides an overview of massive MIMO and large-scale distributed MIMO systems, including spectral efficiency analysis, channel state information (CSI) acquisition, wireless transmission technology, and resource allocation.
标签： Large-scale Antenna Systems
上传时间： 2020-05-27
上传用户：shancjb
Nature is seldom kind. One of the most appealing uses for radio- telephone systems—communication with people on the move—must over- come radio transmission problems so difficult they challenge the imagina- tion. A microwave radio signal transmitted between a fixed base STATION and a moving vehicle in a typical urban environment exhibits extreme variations in both amplitude and apparent frequency.
标签： Communications Microwave Mobile
上传时间： 2020-05-28
上传用户：shancjb
By definition, the term “mobile-radio communications” describes any radio communication link between two terminals of which one or both are in motion or halted at unspecified locations and of which one may actually be a fixed terminal such as a base STATION. This definition applies to both mobile-to-mobile and mobile-to-fixed radio communica- tion links. The mobile-to-mobile link could in fact consist of a mobile- to-fixed-to-mobile radio communication link.The term “mobile” applies to land vehicles, ships at sea, aircraft, and communications satellites. In tactical situations, mobile-radio systems may include any or all of these types of mobile terminals.
标签： Communications Engineering Mobile
上传时间： 2020-05-30
上传用户：shancjb
