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enhanced data rate (EDR)

Enhanced Data Rate (EDR) is a Bluetooth standard developed by the Bluetooth Special Interest Group (BSIG), which triples the data rate of Bluetooth from version 2.0 with the Basic Rate (BR) from 723 kbit/s to 2.169 Mbit/s. In addition, the Enhanced Data Rate (EDR) designation is also used in the InfiniBand

for an increased data rate IB-EDR. The increase in data rate is made possible by a change in the modulation process. Whereas in Bluetooth communication all data was previously modulated using Gaussian Frequency Shift Keying (GFSK), the EDR method transmits the payload data in two different modulations, Differential Phase Shift Keying (DPSK) and Differential Quaternary Phase Sh

ift Keying (DQPSK), depending on the quality of the radio channel. A further increase in data rate is possible with 8DPSK modulation.

Bluetooth data frames without and with Enhanced Data Rate (EDR)

Bluetooth data frames without and with Enhanced Data Rate (EDR)

EDR operation can only be performed in a piconet if a master supports EDR functionality. The higher data rate of Enhanced Data Rate provides better voice quality and can also be used for transmitting streaming audio, streaming video, graphics and photos, as well as printing and scanning.

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Englisch: enhanced data rate - EDR
Updated at: 06.10.2020
#Words: 180
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Translations: DE