Telecommunication system has advanced so well in the recent years. As technology is advancing on one side, it is also likely to create some unwanted problems. Since many devices have been invented and some of them are said to operate in the same frequency, a phenomenon called interference arises. This kind of interference is possible in wireless devices. The interference can be overcome by using a technique called adaptive frequency hopping.
As in the case of Bluetooth and Wireless LAN, interference takes place as both are operating in the same bandwidth. This causes deterioration of quality more in voice centric applications than in data centric applications i.e. it’ll lead to poor sound quality. Generally Bluetooth devices have some form of frequency hopping techniques, which are random in design, to avoid interference but it will not be effective when clarity is of prime importance. Thus the random hopping results in collisions. In contrast to the above, adaptive frequency hopping allows Bluetooth to adapt to the environment. It identifies the fixed sources of interference and excludes them from the channels available for communication. As Bluetooth requires at least twenty channels for communication, even if AFH technique reduces the number of channels, it will not affect the efficiency of Bluetooth.
To have better efficiency of Bluetooth devices, same channel technique is used. One good channel is chosen and both master and slave communicate and respond via the same channel. This is done to avoid instances where the master transmits on a “good” channel while the slave responds on a “bad” one (or vice versa), as this would lead to several retransmissions. The algorithms implemented for AFH are used to identify the channels with no difficulty and perform efficient re-mapping.
APPLICATIONS
· Eliminates the distortion due to interference.
· Lowest impact on CPU loads for minimal power consumption.
· Smallest footprint concerning both software and hardware.
· Easiest integration with a wide range of radio chips.
As in the case of Bluetooth and Wireless LAN, interference takes place as both are operating in the same bandwidth. This causes deterioration of quality more in voice centric applications than in data centric applications i.e. it’ll lead to poor sound quality. Generally Bluetooth devices have some form of frequency hopping techniques, which are random in design, to avoid interference but it will not be effective when clarity is of prime importance. Thus the random hopping results in collisions. In contrast to the above, adaptive frequency hopping allows Bluetooth to adapt to the environment. It identifies the fixed sources of interference and excludes them from the channels available for communication. As Bluetooth requires at least twenty channels for communication, even if AFH technique reduces the number of channels, it will not affect the efficiency of Bluetooth.
To have better efficiency of Bluetooth devices, same channel technique is used. One good channel is chosen and both master and slave communicate and respond via the same channel. This is done to avoid instances where the master transmits on a “good” channel while the slave responds on a “bad” one (or vice versa), as this would lead to several retransmissions. The algorithms implemented for AFH are used to identify the channels with no difficulty and perform efficient re-mapping.
APPLICATIONS
· Eliminates the distortion due to interference.
· Lowest impact on CPU loads for minimal power consumption.
· Smallest footprint concerning both software and hardware.
· Easiest integration with a wide range of radio chips.
