Claims
- 1. A method for processing a signal, which comprises the following steps:
receiving the signal; carrying out channel selection with an analog channel selection filter; converting the signal to a digital, discrete-time and discrete-value signal; mathematically reconstructing a continuous-time and continuous-value signal profile using zero crossings {ti} and phase values {φ(ti)=ki·π/2, kiεN0} by way of a mathematical reconstruction algorithm using a function system {φ(t−k)}.
- 2. The method according to claim 1, wherein the receiving step comprises receiving a digitally modulated signal in a cordless communications system.
- 3. The method according to claim 1, wherein the function system is an orthogonal function system.
- 4. The method according to claim 1, which comprises limiting the signal and oversampling the limited signal for digitizing the received signal.
- 5. The method according to claim 4, wherein the oversampling step comprises producing a signal with a word length of 1.
- 6. The method according to claim 1, which comprises FSK-modulating the signal.
- 7. The method according to claim 1, which comprises carrying out group delay time equalization in a signal path downstream from the mathematical reconstruction.
- 8. The method according to claim 1, which comprises converting a signal frequency to an intermediate frequency after the channel selection.
- 9. A receiver circuit for a cordless communications system, comprising:
an analog signal processing section and a digital signal processing section; said analog signal processing section containing a channel selection filter; said digital signal processing section containing a phase reconstruction circuit for mathematical reconstruction of a continuous-time and continuous-value signal profile using zero crossings {ti} and periodic phase values {φ(ti)=ki·π/2, kiεN0}, by way of a mathematical reconstruction algorithm using a function system {φ(t−k)}.
- 10. The receiver circuit according to claim 9, wherein said digital signal processing section includes a group delay time equalizer for equalization of at least the signal distortion caused by said channel selection filter.
- 11. The receiver circuit according to claim 10, wherein said group delay time equalizer is an all-pass filter.
- 12. A receiver circuit for a cordless communications system, comprising:
an analog signal processing section and a digital signal processing section connected to said analog signal processing section; said analog signal processing section containing a channel selection filter; said digital signal processing section containing a phase reconstruction circuit programmed to process a mathematical reconstruction algorithm using a function system {φ(t−k)} for mathematical reconstruction of a continuous-time and continuous-value signal profile using zero crossings {ti} and periodic phase values {φ(ti)=ki·π/2, kiεN0}.
- 13. The receiver circuit according to claim 12, wherein said digital signal processing section includes a group delay time equalizer for equalization of at least the signal distortion caused by said channel selection filter.
- 14. The receiver circuit according to claim 13, wherein said group delay time equalizer is an all-pass filter.
Priority Claims (1)
Number |
Date |
Country |
Kind |
101 03 479.2 |
Jan 2001 |
DE |
|
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is a continuation of copending International Application No. PCT/DE02/00017, filed Jan. 7, 2002, which designated the United States and which was not published in English.
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/DE02/00017 |
Jan 2002 |
US |
Child |
10628788 |
Jul 2003 |
US |