公开(公告)号：US09276789B2

公开(公告)日：2016-03-01

申请号：US14152034

申请日：2014-01-10

Applicant: ABB Technology AG

Inventor： Stefan Pook ,  Olaf Schmidt ,  Thomas Keul

IPC: H04L27/00 ,  H04L27/148

CPC classification number: H04L27/148

Abstract: Exemplary embodiments relates to a demodulator for frequency-shift keyed signals by using the Goertzel algorithm according to the general recursive calculating rule, where c re = 2 * cos ⁡ ( 2 * π * f g f s ) with the sampling frequency fs and the specified frequency fg. To reduce the mathematical complexity in feed-power-limited devices, it is proposed that the sampling frequency fs is an integral multiple of the frequency fg of a specified discrete spectral component.

Abstract translation: 示例性实施例涉及通过使用根据通用递归计算规则的Goertzel算法的频移键控信号的解调器，其中c re = 2 * cos⁡（2 *＆pgr; * fgfs）具有采样频率fs和指定频率 fg。 为了降低馈电功率限制器件的数学复杂度，提出采样频率fs是指定离散频谱分量的频率fg的整数倍。