wisp antenna

difference between the level of signal and the level of interference. Because it reflects the negative impact of RF interference on user throughput, SINR is a better indicator of what performance a Wi-Fi system can achieve. The higher the SINR value, the higher the data transfer rate, and the greater the spectral capacity.　　 Figure: SINR is an important indicator for determining the performance of Wi-Fi systemsIn order to obtain a higher SINR indicator, Wi-Fi systems must be achieved by i

Shared Library) 11. Run install_software: #./install_software, enter Y twice as prompted, modify makefile. config, and modify a set of parameters in Makefile. config in/opt/gamit/libraries. (1) MAXSIT 55, MAXSAT 32, MAXATM 25, and MAXEPC 5760 (2) # Specific to FC5 (F6, F7, F8) Then, enter "Y" twice to complete the installation; 12. After installation, open the terminal and enter doy to check whether the program is correctly installed. (Note: After the installation is completed under the root us

MIMO technology can be used as a bridge to connect old and new wireless technologies, so that the two can develop and integrate harmoniously. So it is already an important technology in the next generation of wireless broadband mobile communication systems. The following will give you an in-depth analysis of its development. MIMO technology has become one of the key technologies in the wireless communication field. However, it is a huge challenge in the industry to reduce the algorithm complexit

the body (MINI-PCI or mini pci-Express) and a preset antenna. In this way, you only need to purchase the wireless network card of the corresponding interface and connect the antenna. If you have an expansion slot (MINI-PCI or mini pci-Express) that is not cabled, you can also install and use the antenna after purchasing it. There are two types of expansion slots

In most home environments, only one router is used for wireless network coverage, a single wireless router has limited coverage, and wireless signals in some areas may be weak or cannot be found. This article describes how to enhance the coverage effect of a single wireless router. If the housing space is not open enough, there are partitions, walls and other obstacles, will lead to wireless signal penetration attenuation is too large, the scope of the coverage is gre

will also increase. Currently the international regulation of the maximum launch power of 20DBM (or 100MW), but now the market most of the products are not up to this value, we are in the choice of course the closer the better. Wireless Router selection standard 3, antenna gain Wireless products are mostly antennas, this antenna can be good or bad for wireless products have a direct impact on the selecti

ordinary users 54M products can fully meet the needs of the Internet. 2. Transmitting power: We know that the unit of measure of power is watt. In the same way, wireless devices also use transmitting power to measure the performance of the transmitter. The unit of measurement for transmitting power is dbm or MW. Like the relationship between the brightness and wattage of a light bulb, the transmission distance of the wireless device is also connected with the transmit power. With the increase

two. In addition, a lot of home appliances in the work of the wireless network will also cause electromagnetic interference, so the placement of wireless routers should also try to stay away from these appliances. 　Third, extended antenna enhancement signal Because the size of the antenna gain directly affects the signal emission intensity and the ability to receive, and some of the routers

network. For this reason, before placing wireless internet nodes or wireless router devices, we should make a rough estimate of the number of users of wireless Internet access, and ensure that many wireless internet users can be evenly connected to different wireless access devices. Make sure each one of them is able to surf the internet efficiently and wirelessly. focus on the antenna position under normal circumstances, wireless internet nodes

is very low, it may take more than 10 times times the weight. 18650 the other advantage of the battery is a lot of kinds, for example, when you need to the cold area, you can change the low-temperature battery, you can work in the 零下40度 environment. Instead of Conte like the iphone, it's completely impossible to use. ) 2, the mobile phone's GPS performance should be good enough, have a separate external GPS antenna, so that in the woods and heavy ra

The construction of 3G mobile network is a complex project, considering all kinds of factors, also need to deal with the emerging problems, so technology and experience are equally important. Alcatel Shanghai Bell by virtue of its strong in the field of telecommunications research and development strength and accumulated many years of experience in the field, will be in the future 3G network construction to assist operators to complete the construction goals, and jointly create a new phase of mo

, configuration, frequency point, latitude and longitude, antenna height, antenna gain, antenna half power angle (vertical and horizontal), azimuth, elevation, base station type, etc. Prepare a map indicating the station number, frequency point, BSIC, and azimuth (antenna direction), and record the current system versi

. Therefore, I prefer to purchase a Mbit/s router or a Mbit/s router. After all, the network device update iteration is slow and a vro takes a long time to use, it is necessary to leave room for network bandwidth upgrade in the future. Of course, for users with simple network needs, a low-price M router is also a good choice, and there is no best product in the world, if you make the best of your resources, you are the best choice. blindly pursuing performance leads to performance redundancy, wh

Check that there is a mobile phone signal amplifier in the market. I don't think it's too expensive. The poor have to find a solution, so Baidu and Google have joined hands to save money and solve the problem! Finally, I found a way to enhance the mobile phone signal with chopsticks and tin paper. by sorting out similar data, I found this method, and then I bought two pieces of tin paper and chopsticks, I tried it several times, but it still seems to be effective! Now, let's summarize this metho

systems without knowing any codes at all simply by being closer to our target.This tutorial would show you a technique to use this effect to hack civilian FM radio bands and play your own social engine ering payload. Maybe you simply don't like the music a radio station in a particular business or vehicle are playing and you ' d like to PLA Y your own. Maybe you ' d like to play a message to get your the target to does something you want them to. Whatever The goal, all your really need to rebro

power of the wireless router is generally small, so the use of the process is very much in the vicinity of electronic equipment interference, so in the setting of wireless router placement, we must remember to stay away from microwave ovens, refrigerators and other household appliances. A good antenna is also to ensure that the router wireless transmission distance and stability of the effective guarantee that some high-end wireless routers will us

The antenna-fed system refers to electromagnetic waves radiating from the antennas to the surrounding space. Electromagnetic waves consist of electric fields and magnetic fields. It is stipulated that the direction of the electric field is the direction of the antenna polarization. The antennas commonly used are mono-polarized. The antenna and feeder systems are

multi-dimensional transmission scheme: one single RF channel is used to send and receive two or more signal streams. As a result, the wireless communication system can transmit data twice or more in a channel. In the system, use more than one high-integration RF upconverter) and antenna to transmit these multiple signals, and there is also more than one high-integration RF downconverter) and the antenna to

channel. In this way, all users use the channel in the default configuration of the router, which is prone to channel interference. If nearby neighbors use the same channel as ours, our wireless signals will be affected. We can also use the Network Stumbler software for scanning to see which wireless signals exist nearby and which channel is used. Then modify our own wireless channels to avoid duplication with other channels. In addition, you should note that the signal of a channel will interf

. In this way, all users use the channel in the default configuration of the router, which is prone to channel interference. If nearby neighbors use the same channel as ours, our wireless signals will be affected. We can also use the Network Stumbler software for scanning to see which wireless signals exist nearby and which channel is used. Then modify our own wireless channels to avoid duplication with other channels. In addition, you should note that the signal of a channel will interfere with