decibel antennas

In wireless networking, we need Wireless antennas to help increase the coverage area. Especially in office buildings, we often see long, mushroom-like wireless antennas, which are used to enhance wireless signals. For wireless antenna products, let's take a look at the following introduction. For many wireless users, the deployment of every wireless lan wlan is not a simple task. The home network may be a g

the existence of other interference sources make it more difficult to achieve high-speed data transmission over wireless channels than wired channels. The multi-path effect may cause decline and thus is considered a harmful factor. However, the results show that for the MIM0 system, the multi-path effect can be used as a favorable factor. Generally, multi-path fading is considered a harmful factor. The MIMO system uses multiple antennas (OR array

small, this is the basis of the deployment of small base station. The future 5G mobile communications will no longer rely on the large base station of the fabric architecture, a large number of small base stations will become a new trend, it can cover the large base station could not touch the peripheral communication. Because of the large reduction in volume, we can set up around 250 meters to deploy a small base station. In this way, operators can deploy thousands of small base stations in ea

transmission rate. in addition, 802.11n allows use of wider 40 MHz channels to double the bandwidth as compared to the legacy 20 MHz operation. 802.11n uses frame aggregation and block acknowledgements for improving the throughput efficiency. Q. My legacy (802.11a/B/g) AP already has two antennas. isn' t it capable of MIMO?MIMO is not just about having multiple antennas but about having multiple transmit/r

ndraft 2.0) wireless connections, in this regard, the development direction and goal of enterprise wireless products are the same as that of home wireless products. 2. Provides the switch function Both enterprise wireless router products and home wireless router products are equipped with one WAN port and four 10-Gigabit LAN ports. Automatic negotiation and port flip are supported without selecting the network cable sequence. For some products, Gigabit LAN ports are also standard for users' nee

", and the 802.11ac period reached "a." Now the 802.11AC router, also supports only 80MHz band, the speed is 433Mbps. With speeds of up to 867Mbps in the 160MHz band, it is estimated that there will be a universal solution in 2015. 2, see the number of antennas Early 802.11ABG, only 1 antennas, that is, support a group of transceivers, including 1 groups of receivers, 1 sets of transmitters, called 1x1 s

H-antenna Placement Time Limit:1000MS Memory Limit:65536KB 64bit IO Format:%lld %llu Submit Status Practice POJ 3020 Description The Global aerial Centre has been allotted the task of building the fifth generation of mobile phone Nets in Sweden. The most striking reason so they got the job, is their discovery of a new, highly noise resistant, antenna. It's called 4DAir, and comes in four types. Each type can is transmit and receive signals in a direction aligned with a (slightly skewed) latitudi

structure are greatly improved, so that wireless network builders can purchase as few wireless devices as possible to achieve a variety of connection networking projects for the wireless LAN and reduce the network cost. How does General WDS work? The general WDS mode works in the MAC physical layer like the Wireless Distributed System. The two devices must configure the MAC address of each other. WDS can be connected to multiple APs, but the peer MAC address must be correctly configured, and th

. Songbird is integrated from Firefox and VLC code, so Songbird is a desktop music player with Web browsing function. Like Firefox, Songbird supports tag-Based browsing and plugin installation. When you browse any website that contains the multimedia supported by the website, it will automatically list the multimedia available on the current page in an independent panel for you to download or play. It can be said that Songbird inherits most or even all of the VLC features, so Songbird can play a

without 802.11n support. MIMO involves antennas and paths. The number of antennas/paths used indicates how many antennas/paths can be used to send and receive signals. For example, 3 × 3 means 3 antennas/paths are sent and 3 antennas/paths are received. A spatial stream inv

transmitting power of the affected AP, and changing the channel allocation of the AP by three ways. Although these methods have their own expertise, none of them is directed to the RF interference problem.The market is awash with APS with omni-directional bipolar antennas that send and receive signals from all directions. Since these antennas are always in the environment, sending and receiving signals in

higher data rates.Common practices for solving interference problemsThe usual methods of solving radio frequency interference include reducing the physical data rate, reducing the transmitting power of the affected AP, and changing the channel allocation of the AP by three ways. Although these methods have their own expertise, none of them is directed to the RF interference problem.The market is awash with APS with omni-directional bipolar antennas t

In the previous article, we introduced what is a wireless antenna and the two basic parameters of the antenna. Next we will introduce in detail what are the outdoor wireless antennas. We have already introduced indoor wireless antennas. We will not repeat them here. Outdoor wireless antenna 1. Omnidirectional Antenna An outdoor Omnidirectional Antenna distributes signals evenly in a 360-degree comprehensive

wiring inside the fuselage. The signal effect is much better than that of the external wireless Nic, and it does not need to occupy the additional port of the local machine, there is no disadvantage that external wireless NICs are cumbersome. The biggest drawback is that the upgrade operation is troublesome, especially for low-cost models without built-in antennas. In addition, some brands (such as ThinkPad) use wireless network cards only to install

GHz, to set up a fixed transceiver Base Station BTS and Base Tranceiver Station within a certain region ). In addition to the original telephone communication, many users are eager to connect to Aintemet so that they can communicate with other users through e-mails and frequently request a large amount of data information from appropriate websites, the above broadband FWA can be fully utilized to install appropriate antennas and email receiving machi

http://poj.org/problem?id=3020Antenna Placement Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 7565 Accepted: 3758 DescriptionThe Global aerial Centre have been allotted the task of building the fifth generation of mobile phone nets in swed En. The most striking reason so they got the job, is their discovery of a new, highly noise resistant, antenna. It's called 4DAir, and comes in four types. Each type can is transmit a

distribution of the AP. In certain cases, each of these three methods works well, but none of the three methods can fundamentally address the problem of radio interference. Today, the majority of the AP is the omni-polar antenna used in the market. These antennas transmit and receive at a comparable rate in all directions. Since these antennas transmit and receive at the same speed in any case, the only op

Q: No line from the living room, but in the bedroom signal is relatively weak, what is the solution? A: No line by the signal strength and the route itself, the receiver's wireless network card, the use of distance, the middle interval of the number of load-bearing walls, and so on, and even with the neighbor's home without the number of lines are also related. Method One: Antenna gain Normally, no line from through a load-bearing wall is no problem, some good performance through

http://acm.pku.edu.cn/JudgeOnline/problem?id=3020 Antenna Placement Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 2319 Accepted: 1082 Description The Global aerial Centre has been allotted the task of building the fifth generation of mobile phone Nets in Sweden. The most striking reason so they got the job, is their discovery of a new, highly noise resistant, antenna. It's called 4DAir, and comes in four types. Each type can is tr

You should have a lot of knowledge about wireless network interfaces. The next step is to explain how to upgrade the built-in wireless network card. First, you need to understand the internal structure of the notebook, you need to "Anatomy" the laptop before it involves wireless network card content. Upgrade built-in wireless network card From the current design of the motherboard for low-price laptops, the expansion slots on some low-price notebook boards are designed at the bottom of the fusel