Its range is greater than that of infrared communication. Bluetooth is a technology that allows for the transmission of both speech and data. Bluetooth gadgets are quite affordable. Because there is no direct line of sight, you may connect through any obstruction. Bluetooth uses radio waves instead of electrical cables like other wireless technologies such as Wi-Fi.
Bluetooth has several advantages over IR communication:
1 It can work around objects so you don't have to be directly facing one another. 2 It can transmit data at higher speeds than IR communications. 3 It uses less power than IR communications.
Some disadvantages of Bluetooth:
1 It cannot transmit music files over its connection. You will need an external device for this purpose (such as iTunes). 2 It cannot transmit video files. You will need an external device for this purpose (such as Windows Media Player).
Bluetooth was first released in 2001 by Ericsson and IBM. It can be found in most modern smartphones and many other devices now. Bluetooth 4.0 was launched in 2011. It provides up to three times faster connection speeds than previous versions. Bluetooth 5.0 was announced in 2019. It supports self-healing networks and will reduce energy consumption during sleep mode.
Although infrared has a distinct advantage in terms of effective range, both technologies are only appropriate for communication between devices that are in close proximity to one another. For more distant connections, Bluetooth is still preferred over infrared.
Bluetooth's pros and drawbacks
While a Bluetooth-enabled device may connect to several devices at once, Infrared typically connects on a "one-to-one" basis, which means that a device can only connect to one other device at a time. This is different from radio frequency (RF), which allows many devices to connect to each other at the same time.
Bluetooth transmission uses short range radio waves about 10 times a second. It can transmit small amounts of data from one device to another, such as a button press or voice signal. The receiver in the other device can decode these signals and take appropriate action. Bluetooth technology was developed by Ericsson, IBM, Intel, and Toshiba as an industry standard communication protocol for wireless personal area networks (WPANs).
Infrared transmission uses longer range light beams than Bluetooth technology. It can transmit larger amounts of data over greater distances than Bluetooth, but it cannot transmit voices. An infrared transmitter emits long pulses of light from a device such as a remote control. An infrared receiver detects these pulses of light and converts them into electrical signals that it sends to a compatible device for processing. Infrared technology was originally used in television remote controls before the advent of the smartphone; today it is commonly found in consumer products including cordless phones, home appliances, and office equipment.
In conclusion, Bluetooth transmission uses short range radio waves about 10 times a second.
Because the devices communicate by radio (broadcast), they do not need to be in visual range of each other. A quasi-optical wireless route, on the other hand, must be feasible. Range varies depending on power class, however effective ranges vary in practice.
Most Bluetooth applications are for interior use, where attenuation of walls and signal fading due to signal reflections reduce the range much below the Bluetooth devices' advertised line-of-sight ranges. These applications include: Bluetooth wireless headphones or speakers Bluetooth can be used with your phone to make and receive calls over a wireless connection instead of using your car's built-in speakerphone or a hands-free device. This saves money on cell phone bills and prevents listening to other people's conversations when you drive.
It is also possible to use Bluetooth with other portable audio devices such as MP3 players and laptops. It can even be used with personal digital assistants (PDAs) that have a Bluetooth interface. However, since most PDAs cannot output very loud sounds, this type of application usually requires a separate amplifier.
Some appliances such as refrigerators and air conditioners come equipped with Bluetooth interfaces. These can be paired with compatible mobile phones or tablets, allowing the appliance to be controlled from afar. For example, an owner of a refrigerator could switch it on from their phone if they were going to be out of town for several days.
Finally, some home theater systems support Bluetooth input/output connections. This allows users to control their television sets from another room via their smartphone or tablet.
The Radio Spectrum The lower the frequency, however, the lower the data rate it can accommodate. As a result, choosing a radio spectrum requires balancing range and data rate. Bluetooth (r) technology operates on the 2.4 GHz ISM radio band (2400 to 2483.5 MHz), which provides an excellent blend of range and throughput. This spectrum is not used by any other wireless standard, so it's available for Bluetooth devices without interfering with others.
Bluetooth is a wireless communication technology standard for short-range communication. Bluetooth employs short-wavelength UHF radio waves with frequencies ranging from 2.4 to 2.485 GHz. Home control automation systems are a common use. Bluetooth allows you to set up a personal area network in which many devices communicate wirelessly with one another. These include mobile phones, laptops, tablets, and other portable computers.
Bluetooth uses frequency hopping spread over a wide range of frequencies to help prevent interference with other wireless devices. It can transfer data at rates up to 1Mbit/s.
In addition to controlling home appliances, smartphones can be used as a remote control for your television. This feature is called "AirPlay" and it works by streaming audio from your iPhone or iPad device directly to an Apple TV set-top box. The Apple TV then relays the audio signal to any AirPlay-enabled speaker system or headphones connected to it. You can also use AirPlay to stream music from iTunes or Apple Music to your speakers.
Apple introduced AirPlay in 2011 as part of its fourth-generation iPod touch lineup. The first generation Kindle Fire tablet came with built-in support for AirPlay, while second-and third-generation models included support via an update from Amazon. Other manufacturers have since added support for AirPlay across their lineups.
Bluetooth has been widely adopted by manufacturers because of its low cost and high speed.