A FSK/GFSK demodulation method and apparatus

一种解调方法、解调的技术，应用在数据处理领域，能够解决相位域解调技术性能低等问题

Active Publication Date: 2018-12-11
TELINK SEMICON SHANGHAI
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  • Claims
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Problems solved by technology

[0005] Aiming at the problem of low performance of the phase domain demodulation technology mentioned above, a FSK / GFSK demodulation method and device are proposed to improve the performance of the phase domain demodulation technology

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  • A FSK/GFSK demodulation method and apparatus
  • A FSK/GFSK demodulation method and apparatus
  • A FSK/GFSK demodulation method and apparatus

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[0051] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0052] In the present invention, it should be understood that terms such as "comprising" or "having" are intended to indicate the presence of features, numbers, steps, acts, components, parts or combinations thereof disclosed in the specification, and are not intended to exclude one or multiple other features, numbers, steps, acts, parts, parts or combinations thereof.

[0053] In addition, it should be noted that, in the case of n...

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Abstract

A FSK / GFSK demodulation method and apparatus are provided, relating to communications technology. In the time range of (2M +1) T, determining a digital information vector group {Vl (i)} of the codeword a [k] to be demodulated and a corresponding phase matching vector group {theta1 (i)}, determining a received phase vector (shown in the description) of the received FSK / GFSK baseband signal (shownin the description ), determining the average phase difference beta l between (shown in the description) and theta l (i), and after removing the influence of the average phase difference beta l, calculating (shown in the description) and theta l (i) phase matching degree Ql, finding a value l which maximizes the phase matching degree Ql, and determining a [k] corresponding to the value of l in the digital information vector Vl (i) as a demodulation result. Because the influence of average phase difference is eliminated in phase matching, the accuracy of phase matching is improved and the performance of phase domain demodulation technology is improved.

Description

technical field [0001] The invention belongs to the field of data processing, and in particular relates to an FSK / GFSK demodulation method and device. Background technique [0002] The existing FSK / GFSK demodulation method based on matched filter banks mainly completes the demodulation operation in the complex domain (I\Q plane), which requires a large number of complex multiplication and complex addition and subtraction operations, and the system complexity is high. [0003] Since the FSK / GFSK signal has a constant envelope, the transmitted digital information is all included in the phase of the signal, and the demodulation operation is completed in the phase domain, which can convert a large number of complex operations into real addition and subtraction operations, so that it can be effectively Reduce system complexity. [0004] However, the inventors of the present invention have found that the existing phase-domain demodulation technology either does not use the phase-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/14
CPCH04L27/14H04L27/2017H04L27/2338H03D3/02H04L27/144
Inventor 聂宏
Owner TELINK SEMICON SHANGHAI
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