Bluetooth low-power-consumption multi-phase frequency shift keying modulation/demodulation method and device

A technology of Bluetooth low power consumption and modulation method, which is applied in the fields of Bluetooth low power multi-phase frequency shift keying multi-phase frequency shift keying modulation and demodulation, and can solve low power efficiency, high linearity requirements of power amplifiers, Achieving high complexity problems

Active Publication Date: 2021-02-23
NANJING ZGMICRO CO LTD
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Problems solved by technology

Signals with a high peak-to-average power ratio have high requirements on the linearity of the power amplifier, so the implementation complexity is high and the power efficiency is low, which is not suitable for BLE applications that require high power efficiency
Multi-order frequency shift keying (MFSK: M_ary FSK) modulation can also be used, but MFSK demodulation has high complexity and poor demodulation performance

Method used

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  • Bluetooth low-power-consumption multi-phase frequency shift keying modulation/demodulation method and device
  • Bluetooth low-power-consumption multi-phase frequency shift keying modulation/demodulation method and device
  • Bluetooth low-power-consumption multi-phase frequency shift keying modulation/demodulation method and device

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Embodiment Construction

[0139] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments . Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0140] As mentioned above, in the existing technologies for improving the wireless transmission rate of BLE, reducing the symbol period of Gaussian Frequency Shift Keying (GFSK: Gaussian Frequency Shift Keying) modulation is greatly affected by multipath interference, and the performance of long-distance transmission is poor. Differential phase shift keying (DPSK: Differential Phase Shift Keying) or multi-carrier modulated m...

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Abstract

The embodiment of the invention provides a Bluetooth low-power-consumption multi-phase frequency shift keying modulation / demodulation method and device, and the method comprises the steps: grouping inputted binary data streams, each group comprising a plurality of bits; mapping the binary data stream into a phase sequence in which one binary data set is mapped into one phase of a predetermined phase set by Gray encoding; and modulating the phase sequence into a phase signal by using a phase waveform obtained by integrating a preset frequency waveform. When the baseband signal obtained based onthe phase signal is used for Bluetooth low-power-consumption signal transmission, high power amplification efficiency, low demodulation complexity and high anti-multipath interference performance canbe maintained while the BLE wireless transmission rate is improved.

Description

technical field [0001] The present invention relates to the field of wireless communication, and more specifically, to a Bluetooth low-power multi-phase frequency shift keying multi-phase frequency shift keying modulation and demodulation method and device. Background technique [0002] The Internet of Things is the foundation of the intelligent era, and wireless connection technology is the core of the Internet of Things. With the development of the Internet of Things, various wireless connection technologies have been widely used, such as Bluetooth Low Energy technology (BLE: Bluetooth Low Energy). BLE is not only widely used in the field of Internet of Things wireless connection, Bluetooth Low Energy Audio (BLE Audio) will also bring people lower power consumption, lower cost and higher quality wireless audio services. However, the maximum transmission rate of BLE is only 2Mbps, which limits the further improvement of wireless transmission rate or wireless audio quality,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/12H04L27/14H04W4/80
CPCH04L27/12H04L27/14H04W4/80Y02D30/70
Inventor 徐斌
Owner NANJING ZGMICRO CO LTD
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