Method for data communication between a single-carrier system and a multi-carrier system

• US 20040218521A1
• Filed: 02/02/2004
• Published: 11/04/2004
• Est. Priority Date: 08/01/2001
• Status: Abandoned Application

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Bolinth, Edgar, Kern, Ralf
• Application Number:
  US10/485,534
• Publication Number:
  US 20040218521A1
• Time in Patent Office: Days
• US Class Current: 370/206
• CPC Class Codes: H04L 27/02 Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation H04L27/32 takes precedence
• CPC Class Codes: H04L 27/2017 in which the phase changes are non-linear, e.g. generalized and Gaussian minimum shift keying, tamed frequency modulation H04L27/201 takes precedence
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems
• CPC Class Codes: H04L 5/023 Multiplexing of multicarrier modulation signals multicarrier modulation H04L27/2601

Abstract

A method for data communication between a single-carrier system is provided, wherein a received single-carrier signal is spectrally scanned by the multi-carrier system which decides upon received data according thereto and/or simulates a single-carrier signal with its own carriers.

Claims

1. A method for data communication between a single carrier system and a multicarrier system, characterized in that the multicarrier system subjects a received single carrier signal to spectral sampling and takes this as a basis for making a decision about received data, or

the multicarrier system simulates a single carrier signal to be transmitted with its carriers, or

the multicarrier system subjects a received single carrier signal to spectral sampling and takes this as a basis for making a decision about received data and the multicarrier system simulates a single carrier signal to be transmitted with its carriers.

2. The method as claimed in claim 1, characterized in that the system-inherent parameters of the single carrier system are matched to intervals between the carrier frequencies, center frequency and further system-inherent parameters of the multicarrier system.

3. The method as claimed in claim 2, characterized in that the system-inherent parameters of the single carrier system describe a nonlinear modulation type based on FSK and/or CPFSK/CPM and/or MSK and/or GMSK and/the frequency modulation and/or angle modulation.

4. The method as claimed in claim 2, characterized in that the system-inherent parameters of the single carrier system describe a linear modulation type such as amplitude modulation and/or ASK/PAM (Amplitude Shift Keying/Pulse Amplitude Modulation).

5. The method as claimed in one of the preceding claims, characterized in that a decision is made about received data on the basis of the amplitude and phase of the spectrally sampled single carrier signal.

6. The method as claimed in one of the preceding claims, characterized in that the multicarrier system sends and/or receives signals using orthogonal frequency division multiplexing.

7. The method as claimed in one of the preceding claims, characterized in that the single carrier system modulates signals using frequency shift keying.

8. The method as claimed in one of the preceding claims, characterized in that the single carrier system modulates signals using continuous phase frequency shift keying.

9. The method as claimed in one of the preceding claims, characterized in that the single carrier system modulates signals using amplitude modulation.

10. The method as claimed in one of the preceding claims, characterized in that the single carrier system modulates signals using (analog) frequency modulation or angle modulation.

11. An apparatus for data communication between a single carrier system and a multicarrier system, characterized in that a transmission path (10, 12, 13, 14, 17, 18, 22, 24) contains a magnitude/phase allocator (20), which, on the basis of magnitude and phase, allocates carriers of a multicarrier signal a single carrier signal which is to be transmitted, and/or a reception path (28, 30, 32, 38, 39, 40, 42) contains a magnitude/phase evaluator (34), which evaluates the carriers of a received multicarrier signal on the basis of magnitude and phase, and, downstream thereof, a frequency domain demodulator and decision maker (37) which makes decisions about received data.

12. The apparatus as claimed in claim 11, characterized in that the transmission path comprises a multicarrier data source and a single carrier data source (10, 12) whose signals are supplied via a multiplexer (18) to an IFFT unit (22) which transforms the supplied signals from the frequency domain to the time domain.

13. The apparatus as claimed in claim 11 or 12, characterized in that the reception path comprises an FFT unit (30), which transforms received signals from the time domain to the frequency domain, a demultiplexer (32), which multiplexes the received signal transformed by the FFT unit (30) onto carriers, and a single carrier data sink and a multicarrier data sink (40, 42).

14. A transmitter for single carrier signals and multicarrier signals, which has

a multicarrier data source and a single carrier data source (10, 12),

a magnitude/phase allocator (20), which allocates carriers of a multicarrier signal a single carrier signal from the single carrier data source (12) on the basis of magnitude and phase,

a multiplexer (18) which multiplexes the signals allocated by the magnitude/phase allocator (20) and the signals from the multicarrier source (10) onto carriers of the multicarrier signal which is to be transmitted, and

an IFFT unit (22) which transforms signals supplied by the multiplexer (18) from the frequency domain to the time domain.

15. A receiver for single carrier signals and multicarrier signals, which has

an FFT unit (30) which transforms received signals from the time domain to the frequency domain,

a demultiplexer (32) which multiplexes the received signal transformed by the FFT unit (30) onto carriers of a multicarrier signal,

a magnitude/phase evaluator (34) which evaluates the signals supplied by the demultiplexer (32) on the basis of magnitude and phase,

a frequency domain demodulator and decision maker (37) which is connected downstream of the magnitude/phase evaluator (34) and makes decisions about received data, and

a single data carrier sink and a multicarrier data sink (40, 42).