Factors affecting wlan

What is a wireless LAN? Also known as WLAN, it is a wireless local area network that uses radio waves as its carrier. As the name suggests, in the network there are no wires ? the last link with the users is wireless.

Here are some factors that affect the wireless LAN.

Obstacles to wireless LAN: Transmission errors are increased due to?

Decreased power at certain frequencies. The time difference between different received components makes the received signal spread in time domain.

Antenna gain: This is the power gain in comparison to an isotropic antenna measured in isotropic decibels (dBi). Antenna directivity increases antenna gain in a given direction. In client devices, omni spherical antenna is most suitable as it allows the device to operate in any position.

Antenna diversity: Very important in preventing multi path fading, especially for increasing range.

Antenna cable length: Loss in the cable depends on the length of the cable. Cable loss degrades SNR significantly and should be minimized.

Receiver sensitivity: The receiver has a minimum received power threshold that the received signal must have to achieve certain bit rate. If the received signal power is lower than the threshold, the maximum bit rate could be decreased, impacting performance. Receiver sensitivity depends both on RF and baseband design.

Transmit power: Higher transmit output power means that the performance would be enhanced. However this is usually limited by regulatory requirements.

Turn-around time: This is the time taken to switch between transmit and receive modes.

Number of users: Performance of the wireless LAN also depends on the number of users who are connected to it.

Traffic mix: There are a few applications that demand more bandwidth. And this is one important factor that will decide how the WLAN will perform.

Distance between AP and client: With the increase in distance between the AP and the client, the data rate would definitely drop.

Orientation: Performance is also affected by the orientation of the client depending on the location of the antenna and also location of AP.