| 摘要 |
<p>In a receiver for FSK modulated signals, an input signal is applied to conversion means (20) which mix the input signal with a local oscillator frequency. In the prior art receiver, the frequency of the local oscillator is always related to the frequencies corresponding to the logical states of the FSK signal. According to the invention it has proven to be possible that the frequency of the local oscillator is unrelated to the frequencies of the FSK signal, resulting in a larger degree of freedom for choosing the local oscillator frequency. This oscillator frequency can e.g. be chosen to be one fourth of the sample frequency the input signal is sampled with.</p> |
