Difference Between Bluetooth 1.2 and 2.0

Bluetooth was introduced in the year 1998 and to date, it is an in-built feature in almost every android, iOS, and some other device.

We examine the various Bluetooth versions and how they influence your wireless listening experience. Bluetooth’s fundamental concept has stayed largely unchanged since its beginnings. Despite this, the technology has been improved significantly. Each Bluetooth version has made significant advancements in audio data transmission. Bluetooth is available in various forms of devices such as headphones, speakers, USB, and much more.

Bluetooth 1.2 Vs 2.0

The main difference between Bluetooth 1.2 and 2.0 is that Bluetooth 1.2 uses GFSK (Gaussian Frequency Shift Keying) whereas Bluetooth 2.0 uses 8DPSK (Eight Phase Differential Phase Shift Keying). Bluetooth 1.2 is suitable to render a single bit per symbol and Bluetooth 2.0 is suitable to render three bits per symbol. The 8DPSK used in Bluetooth 1.2 is faster than GFSK used in Bluetooth 2.0.

Bluetooth 1.2 Vs 2.0

Bluetooth 1.2 uses GFSK (Gaussian Frequency Shift keying) as its modulation type. GFSK is capable to render a single bit per symbol. Bluetooth 1.2 has a slower speed. It doesn’t have backward compatibility with the old devices. One cannot have further connections running simultaneously with Bluetooth 1.2 interpretation. It is not suitable to connect multiple connections running at the same time. This was the first version that made Bluetooth popular and was used onwards.

Bluetooth 2.0 uses 8DPSK (Eight Phase Differential Phase Shift Keying) as its modulation type. The 8PDSK is suitable to render three bits per symbol. Bluetooth 2.0 has a faster speed. It has backward compatibility with the old devices. You can get farther connections from a specific range, running simultaneously with Bluetooth 2.0 interpretation.

Comparison Table Between Bluetooth 1.2 and 2.0

Parameters of ComparisonBluetooth 1.2Bluetooth 2.0
SpeedSlower compared to 2.0 versionThree times faster compared to 2.0
Modulation typeGFSK (Gaussian Frequency Shift Keying)8DPSK (Eight Phase Differential Phase Shift Keying)
Power consumptionConsumes high power Consumes lower power
Connectivity Cannot connect from a far distanceCan connect from a specific far distance
Backward compatibilityDon’t have backward compatibility with old devicesHas backward compatibility with old devices

What is Bluetooth 1.2?

Bluetooth 1.2 is limited to 1mbps with factual data rates of just over 700kbps. Bluetooth 1.2 uses GFSK (Gaussian Frequency Shift Keying) which is suitable to help render a single bit per symbol. Bluetooth 1.2 is not suitable to connect multiple connections running at the same time as the GFSK doesn’t support it.

Bluetooth 1.2 consumes a large amount of power for its work. It is running slower compared to the 2.0 version. It does not have backward compatibility with the old devices. Bluetooth 1.2 version works in around 10 meters of range. The Adaptive Frequency Hopping was specially designed to decrease the similar frequencies of the technologies of the 2.4 GHz range.

Bluetooth 1.2 was a widely used Bluetooth technology that has a basic data rate. It was first invented in the year 2003. Due to the collision of wi-fi and technologies of the same frequencies with Bluetooth, an adaptive frequency hopping (AFH) was helpful. The speed of the pairing was improved than the other two previous versions.

The previous versions 1.0 and 1.1 were introduced in the years 1999 and 2001 respectively. The major enhancements in the Bluetooth 1.2 from the 1.0 version were faster connectivity, easier sharing, and discovery, and much more features.

What is Bluetooth 2.0?

Bluetooth 2.0 can achieve 3mbps with practical data rates of around 2.1mbps. Bluetooth 2.0 uses an 8DPSK (Eight Phase Differential Phase Shift Keying) which is suitable to help render three bits per symbol. As Bluetooth 2.0 uses 8DPSK, it is faster than Bluetooth 1.2 that uses GFSK.

The advantage of Bluetooth 2.0 is that it can have farther connections running at the same time as the 8DPSK is suitable to support it. Another advantage is that Bluetooth 2.0 has the capacity in bit recovery (BER) as the lower bandwidth gives the device more chances of resending lost or distorted packets before any declination is noticed by the user.

It contains a lower amount of power by reducing the workload cycle (duty cycle). It has backward compatible with older devices. It can connect much farther connections running simultaneously. Some of the uses of Bluetooth 2.0 are as follows:

  1. A mobile phone and a handset can communicate and control each other wirelessly.
  2. For opening doors, a smartphone communicates wirelessly with a smart lock.
  3. Audio can be streamed wirelessly to headphones, with or without the ability to communicate.
  4. Data acquired by Bluetooth-enabled fitness equipment can be wirelessly sent to a phone or a computer.
  5. Bluetooth can be considered as a wireless bridge between any IE networks.

Main Differences Between Bluetooth 1.2 and 2.0

  1. Bluetooth 1.2 is three times slower than Bluetooth 2.0.
  2. Bluetooth 1.2 uses GFSK (Gaussian Frequency Shift Keying) modulator while Bluetooth 2.0 uses 8DPSK (Eight Phase Differential Phase Shift Keying) modulator in it.
  3. Bluetooth 1.2 doesn’t have backward compatible while Bluetooth 2.0 has backward compatibility with older equipment.
  4. Bluetooth 1.2 does not provide farther connections running simultaneously at a time, but Bluetooth 2.0 provides you with farther connections running concurrently.
  5. Talking about the consumption of sources, Bluetooth 1.2 consumes more power compared to the 2.0 version.
  6. Bluetooth 2.0 has more ability to recover errors compared to Bluetooth 1.2.
  7. Bluetooth 1.2 works in the range of 10 meters and Bluetooth 2.0 can work in the range of 100 meters.

Conclusion

Hereby, we can conclude that Bluetooth 2.0 has more features compared to Bluetooth 1.2 version. We can get some additional features like voice dialing, call mute, etc. Bluetooth 1.2 has a connectivity range between 10-meter range whereas Bluetooth 2.0 has a connectivity range between the 100-meter range. Bluetooth is considered one of the easiest ways to share documents, pictures, or any files from device to device.

Bluetooth 1.2 and Bluetooth 2.0 have improved resistance to radio frequency interference. The 1.2 version has less interference of radio frequencies compared to Bluetooth 2.0. Bluetooth 2.0 uses EDR (Enhanced Data Rate) and has a longer duration of battery life as well. As we mount towards the latest versions of Bluetooth; new features and upgrades help to make it simpler to use Bluetooth.

References

  1. https://ieeexplore.ieee.org/abstract/document/5342016/
  2. https://ieeexplore.ieee.org/abstract/document/6488558/
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