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one, human factors The distance between the wireless router and the network card is too long, in this case can only be solved by a different configuration of the appropriate antenna. The wireless router and the network card have the obstacle influence, sometimes also can cause the disconnection breakdown, for instance the indoor complex environment, the wall, the furniture influence. So try not to go through walls over three floors as much as possib
realized by using multiple circuits and packet switching connections on a single terminal. You can support business with different quality requirements, such as voice and packet data, and ensure high quality and perfect coverage. (2) High spectrum efficiency. WCDMA can efficiently use the radio spectrum. Since it uses single cell multiplexing, frequency planning is not required. The network capacity can be greatly improved by using the layered cell structure, adaptive
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 ca
) The numerical value becomes smaller, the reading and writing is convenient. The total magnification of the electronic system is usually thousands of, tens of thousands of or even hundreds of thousands of, a radio from the antenna received from the signal to the speaker sound output, a whole to zoom in about 20,000 times times. In decibels, the logarithm is taken first, and the value is much smaller.(2) convenient operation. When the amplifier is cas
The combination of Wireless AP and wireless route is essential for network construction. For an enterprise, it is possible that a wireless LAN cannot be fully covered. It is especially important to combine Wireless AP and wireless router devices. This article provides a detailed introduction to this problem. Due to work requirements, there is now A need for both Departments A and B to connect wireless networks at the same time, but the employees of the two departments cannot access work informat
. The signal scattering from the center to the surrounding area is used. Therefore, an omnidirectional antenna is used in the selection of the antenna to facilitate signal transmission in all directions so that all directions can receive the signal. The antenna that receives wireless signals at the edge must adopt a targeted
Currently, wireless dual-network technology is also popular. How can we build a complete network? The following articles describe the technical aspects of home applications. The dual-AP function is not a dual-antenna function. In order to facilitate wireless internet signal reception and provide efficient and unobstructed wireless signal transmission, wireless manufacturers have launched wireless router devices that support dual-
network services are discovered through various means, we will analyze the test data and parameters to determine the cause of the problem and take appropriate measures to optimize the network. 1. common hardware faults: (1) Adjustment of base station coverage When the signal in the base station coverage area is poor, you can increase the coverage range by raising or downgrading the antenna height, checking the an
feature can be used as two wireless router devices, with this wireless router device, we can quickly and effectively build A secure wireless dual-network to ensure that the Network in Room A is separated from the network in room B. Dual-AP function AP wireless router is not dual-antenna Function In order to facilitate wireless internet signal reception and provide efficient and unobstructed wireless signal transmission, wireless manufacturers have la
Eliminate misunderstanding: the more wireless route antennas, the better the signal? (1) A strange consumption habit exists in the daily consumption behaviors of most consumers. when the price is almost the same, consumers prefer products with a "large quantity. In addition, the phenomenon of follow-up is also very serious. Many facts did not go to the research, and they took the plunge. "I will buy more products if I buy more products ". Fans of the "Car god party" and "heavy doors" are the mo
There are very few FM searching machines. This problem should be divided into two categories, Category 1: If you manually adjust each station, you can hear clear radio stations. You only need to change the stop threshold of the station The number of search sites has increased, Another type: manually adjust to a radio station with poor signal, and compare it with the FM of the brand mobile phone, it is found that the FM effect is obviously worse than that of the brand mobile phone, for example, t
previous generation of wireless devices do not need to worry that existing devices will be eliminated. In terms of security, D-link dwl-g122 supports Wi-Fi Protected Access (WPA), provides the necessary security protocols and tools to provide confidential communications to you and other wireless users, such as access to sensitive information or dynamic encryption of data transmission. WPA authenticates users by automatically changing the secret key within a regular interval. Second, Lei ke NW
, which allows you to buy a wireless network card separately ". The built-in MiniPCI wireless Nic does not integrate a signal antenna. Therefore, to install the MiniPCI Nic, in addition to requiring the laptop to reserve a MiniPCI slot, you must also have a preset antenna or a preset antenna. Not all brands of MiniPCI interface wireless NICs can be used in any mo
process. Wireless NICs generally have two types of antennas: External antennas and built-in antennas. If the purchased wireless NICs do not have built-in antennas, you must purchase another one. However, the advantage of an external antenna is higher gain and better sensitivity. It can adjust the direction of the antenna to receive better signals. The built-in antenna
1. DBM DBM is the absolute value of power. The formula is: 10lgp (power value/1 MW ). [Example 1] If the transmit power P is 1 MW, it is converted to dBm and then 0dbm. [Example 2] for 40 W power, the converted value in dBm unit should be: 10lg (40 W/1 MW) = 10lg (40000) = 10lg4 + 10lg10 + 10lg1000 = 46dbm. 2. DBI and DBD DBI and DBD are the obtained Gain values (power gain). Both are relative values, but the reference standards are different. The reference of DBI is a full-direction
Several employees in unit A usually use laptops. Due to work reasons, they need to set up wireless networks for resource sharing. Also, several employees in Room B need wireless networking; by nature, building A slightly larger Wireless LAN can meet the wireless Internet access needs of all employees in Room A and room B. Considering the security concerns, the company intends to build A wireless LAN for several employees in Room A to prohibit employees in other offices from accessing the privacy
receiving devices located behind the obstacle will receive very weak signals or fail to receive signals. What about penetration? This is what many netizens are most concerned about. We all hope that wireless signals can penetrate the walls of the house at least. To improve the ability of wireless signal to penetrate the wall, an effective way is to improve the antenna gain. We 'd better choose a product with a high
environment, the distance is short. Generally, the home wireless LAN equipment claim that the transmission distance is more than 100 meters, so the signal transmission distance is not a problem. However, the home environment brings about a new problem, that is, the home space is crowded and the space is not open enough. The walls in the room are the main obstacles. The wireless LAN uses wireless microwave frequencies. The biggest characteristic of microwave is that it is almost linearly transmi
transmit signals from the antenna to various directions. Therefore, it is necessary to consider the signal strength based on the transmission radius. If our router is close to the wall of the neighbor apartment, they will get part of our signal. As a result, we can try to place the router in the center of the home without considering the limitations of the desktop computer and the home modem. In this way, the signal strength sent by the router can sp
Wireless Transmission path analysis is an important step in wireless transmission network design, through the analysis of the transmission path to facilitate the network designers to choose the appropriate type of antenna (direction, polarization, gain and other indicators) according to the margin size of the wireless link, install the antenna height, select the appropriate feed cable and length. The follow
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