Reflection #7

Wireless Technology


Dr. Dayang has proceeded the topic about wireless technology but unfortunately I couldn't come to class :(


Nevertheless, here is my entry to wrap up about the wireless technology. Well, I did some revision on my own about this topic.


WIRELESS

• Wireless telecommunications networks are a type of information transmission system that uses electromagnetic waves.

BLUETOOTH

The Bluetooth logo

• Bluetooth is an industrial specification for wireless personal area network or PANs.
• Bluetooth is acceptable for situations when two or more devices are in proximity to each other and don't require high bandwidth
• The distance covered only a very short range which is less than 10 meters. 
• Devices involved : mobile phones, laptops, PCs, printers, digitial cameras and video game consoles. 

The devices that use Bluetooth can be connected to the laptop as well.

INFRARED DATA TRANSMISSION

The IrDA logo.

• IrDA (Infrared Data Association) is a technology where we can transfer any files from any devices by using infrared light, the one that is non RF.
• The characteristic of infrared transmissions are: 
• The power to transfer data is not so high.
• Only can transfer in a short range, for example the remote control.
• Mainly attached to mobile phones to transfer the data or files from one to another.
• Nevertheless, many laptops sold today are equipped with an IrDA-compatible transceiver that enables communication with other devices, such as printers, modems, LANs, or other laptops.
• However, the limit of transfer speed ranges from 2400 bps to 4 Mbps.
• Requires line of sight transmission.

The various devices that can transfer files and data by using infrared communication.

BROADBAND TECHNOLOGY

• It refers to a telecommunications signal or device of greater bandwidth with greater the information-carrying capacity.
• Today, broadband is widely use to enable the internet access to laptop and mobile devices.
• The device that is simply used is the broadband stick with different service providers.

The different service providers in Malaysia.

• Mobile broadband allows for mobility so that the user can get internet access where ever there are. However, it depends on the service provider's coverage as well.
• Fixed broadband are mainly used for home or business and more stable because it uses cable and usually runs on fibre.

Router