US 2026/0238524 A1Published application

Gauss frequency shift keying (gfsk) signal receiving method and apparatus, electronic device, and storage medium

AssigneeGuangzhou Anyka Microelectronics Co., Ltd.

InventorsYuefeng Peng, Mao Yu, Meng Yuan, Jun Xiong, Norman Shengfa Hu

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Abstract

The present disclosure relates to a technical field of signal processing, and provides a Gauss frequency shift keying (GFSK) signal receiving method and apparatus, an electronic device, and a storage medium. The GFSK receiving method includes: in a GFSK receiver, obtaining, based on a receiving end, a frequency value after phase differencing; performing inverse Gaussian filtering on a decoded frequency value through a preset inverse Gaussian filter, and obtaining a filtered frequency value, where the inverse Gaussian filter is a filter constructed based on composition information of a transmitted signal; and performing accumulation based on the filtered frequency value, making a decision, and obtaining decoded data of a received signal. The present disclosure can improve decoding performance of the GFSK receiver.

Claims20

Dependent claims

A Gauss frequency shift keying (GFSK) signal receiving method, comprising:

obtaining, based on a GFSK received signal, an original frequency value after phase differencing;
performing inverse Gaussian filtering on the original frequency value through a preset inverse Gaussian filter, and obtaining a filtered frequency value, wherein the inverse Gaussian filter is a filter constructed based on composition information of a transmitted signal, and the transmitted signal is a signal that is corresponding to the received signal and passes through a Gaussian filter at a transmitting end;
and
making a decision based on the filtered frequency value, and obtaining decoded data of the received signal;
wherein the GFSK signal receiving method is further comprises:
determining a coefficient of the inverse Gaussian filter based on the composition information of the transmitted signal;
and
constructing the inverse Gaussian filter based on the coefficient of the inverse Gaussian filter;
wherein the composition information of the transmitted signal comprises the number N of correlated symbols and a coefficient F of the Gaussian filter at the transmitting end, wherein F={f(1), f(2), . . . , f[(2N+1)*M]}, wherein M represents the corresponding number of sampling points within a duration of one data symbol in a receiver, and M is a natural number;
and in the Gaussian filter, a current symbol is correlated with the preceding N symbols and the following N symbols, wherein N represents the number of correlated symbols both preceding and following the current symbol, and N is a natural number;
the coefficient of the inverse Gaussian filter comprises an intermediate vector g0, a preceding vector g−n, and a succeeding vector gn;
the determining a coefficient of the inverse Gaussian filter based on the composition information of the transmitted signal comprises:
determining the intermediate vector g0, the preceding vector g−n, and the succeeding vector gn based on the number M of the sampling points, the number N of the correlated symbols, and the coefficient F of the Gaussian filter at the transmitting end, wherein
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the constructing the inverse Gaussian filter based on the coefficient of the inverse Gaussian filter comprises:
constructing the inverse Gaussian filter G=[g−n, g−n+1, . . . ,g0, g1, . . . , gn−1, g0] based on the intermediate vector g0, the preceding vector g−n, and the succeeding vector gn.

202 more elements

A GFSK signal receiving apparatus, comprising:

a frequency value obtaining module configured to obtain, based on a GFSK received signal, an original frequency value after phase differencing;
an inverse Gaussian filtering module configured to perform inverse Gaussian filtering on the original frequency value through a preset inverse Gaussian filter, and obtain a filtered frequency value, wherein the inverse Gaussian filter is a filter constructed based on composition information of a transmitted signal, and the transmitted signal is a signal that is corresponding to the received signal and passes through a Gaussian filter at a transmitting end;
and
a decision decoding module configured to make a decision based on the filtered frequency value, and obtain decoded data of the received signal;
wherein the GFSK signal receiving apparatus further comprises:
an inverse Gaussian filter construction module configured to determine a coefficient of the inverse Gaussian filter based on the composition information of the transmitted signal, and construct the inverse Gaussian filter based on the coefficient of the inverse Gaussian filter;
wherein the composition information of the transmitted signal comprises the number N of correlated symbols and a coefficient F of the Gaussian filter at the transmitting end, wherein F={f(1), f(2), . . . , f[(2N+1)*M]}, wherein M represents the corresponding number of sampling points within a duration of one data symbol in a receiver, and M is a natural number;
and in the Gaussian filter, a current symbol is correlated with the preceding N symbols and the following N symbols, wherein N represents the number of correlated symbols both preceding and following the current symbol, and N is a natural number;
the coefficient of the inverse Gaussian filter comprises an intermediate vector g0, a preceding vector g−n, and a succeeding vector gn;
the inverse Gaussian filter construction module is configured to:
determine the intermediate vector g0, the preceding vector g−n, and the succeeding vector gn based on the number M of the sampling points, the number N of the correlated symbols, and the coefficient F of the Gaussian filter at the transmitting end, wherein
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198 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/153,613Filed 28 Sep 2023
Priority: CN 202310095094.46 Feb 2023
Published: 13 Aug 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04L 27/106
Frequency-modulated carrier systems, i.e. using frequency-shift keying: m-ary fsk
H04L 25/03261
Operation with other circuitry for removing intersymbol interference: with impulse-response shortening filters
H04L 27/14
Frequency-modulated carrier systems, i.e. using frequency-shift keying: demodulator circuits; Receiver circuits
H04L 27/148
With demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements: using…