MULTI-CHANNEL SIGNALING

• US 20110142156A1
• Filed: 12/15/2009
• Published: 06/16/2011
• Est. Priority Date: 12/15/2009
• Status: Abandoned Application

• Current Assignee: Sony Ericsson Mobile Communications AB (Sony Group Corp.)
• Original Assignee: Sony Ericsson Mobile Communications AB (Sony Group Corp.)
• Inventors: HAARTSEN, Jacobus Cornelis
• Application Number:
  US12/638,332
• Publication Number:
  US 20110142156A1
• Time in Patent Office: Days
• US Class Current: 375/271
• CPC Class Codes: H04B 1/406 with more than one transmission mode, e.g. analog and digital modes
• CPC Class Codes: H04L 1/04 using frequency diversity
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• CPC Class Codes: H04L 1/206 for modulated signals
• CPC Class Codes: H04L 27/38 Demodulator circuits; Receiver circuits

Abstract

A system includes a transmitter device that includes a transmitter baseband controller to segment a bit stream into a first segment, a second segment, and a third segment, and generate a first baseband signal that includes the first segment, a second baseband signal that includes the second segment, and a third baseband signal that includes the third segment; and a radio frequency (RF) transmitter to generate a multi-frequency signal based on the first baseband signal, the second baseband signal, and the third baseband signal; and a receiver device that includes an RF receiver to receive the multi-frequency signal, and retrieve the first baseband signal, the second baseband signal, and the third baseband signal from the received multi-frequency signal; and a receiver baseband control to reassemble the bit stream from the received first baseband signal, the received second baseband signal, and the received third baseband signal.

Claims

1. A system, comprising:

a receiver device that includes;

a radio frequency (RF) receiver to;

receive a multi-frequency signal, and

retrieve a plurality of baseband signals from the received multi-frequency signal, where each of the plurality of baseband signals is associated with a different frequency; and

a baseband controller to;

receive the plurality of baseband signals and reassemble a bit stream of information from the plurality of baseband signals.

2. The system of claim 1, where the multi-frequency signal includes a first signal at a carrier frequency minus an intermediate frequency (IF), a second signal at the carrier frequency, and a third signal at the carrier frequency plus the IF.

3. The system of claim 2, where the RF receiver is further to:

retrieve the first signal at the IF,

retrieve an in-phase component and a quadrature component of the second signal, and

retrieve the third signal at the IF.

4. The system of claim 2, where the RF receiver is to split the received multi-frequency signal into a first branch signal and a second branch signal, and where the RF receiver includes:

a first mixer to mix the first branch signal with a cosine signal at the carrier frequency,

a second mixer to mix the second branch signal with a sine signal at the carrier frequency,

a first shifter to shift the mixed first branch signal;

a second shifter to shift the mixed second branch signal;

a first summer to sum the shifted first branch signal and an un-shifted second branch signal to retrieve the first signal; and

a second summer to sum the shifted second branch signal and an un-shifted first branch signal to retrieve the third signal.

5. The system of claim 4, where the RF receiver is further to:

retrieve an in-phase component of the second signal from the mixed first branch signal, and

retrieve a quadrature component of the second signal from the mixed second branch signal.

6. The system of claim 1, where the baseband controller is to determine a measure of quality for a particular one of the plurality of baseband signals and reject the particular one of the plurality of baseband signals if the measure of quality of the particular one of the plurality of baseband signals is below a particular threshold.

7. The system of claim 1, where the plurality of baseband signals includes a bit stream of information, where a particular one of the plurality of baseband signals includes a section of the bit stream of information, and where another one of the plurality of baseband signals includes a different section of the bit stream of information.

8. The system of claim 7, where the baseband controller is to receive a subsequent plurality of baseband signals that includes the bit stream of information, where the subsequent plurality of baseband signals includes a different arrangement of bits of the bit stream of information.

9. The system of claim 1, further comprising a transmitter device that includes:

another baseband controller to;

segment information to be transmitted into a plurality of segments,

generate a first plurality of transmission baseband signals that includes the plurality of segments, where a particular one of the plurality of first transmission baseband signals includes a particular one of the plurality of segments,

generate a second plurality of transmission baseband signals that includes the plurality of segments, where an arrangement of the plurality of segments included in the second plurality of transmission baseband signals differs from an arrangement of the plurality of segments includes in the first plurality of transmission baseband signals.

10. The system of claim 9, where the transmitter device further includes:

an RF transmitter to generate a first transmission multi-frequency signal from the first plurality of transmission baseband signals and a second transmission multi-frequency signal from the second plurality of transmission baseband signals.

11. The system of claim 10, where the RF transmitter includes:

a first shifter to shift a first transmission IF signal;

a second shifter to shift a second transmission IF signal;

a first summer to sum the shifted first transmission IF signal, an un-shifted second transmission IF signal, and a quadrature component of a second baseband signal to generate a first summed signal;

a first mixer to mix the first summed signal with a sine carrier frequency signal;

a second summer to sum the shifted second transmission IF signal, an un-shifted first transmission IF signal, and an in-phase component of the second baseband signal to generate a second summed signal;

a second mixer to mix the second summed signal with a cosine carrier frequency signal; and

a third summer to sum the mixed first summed signal with the mixed second summed signal to generate the first transmission multi-frequency signal.

12. The system of claim 9, where the receiver device is to send an acknowledgement signal to the transmitter device in response to receiving the information.

18. The method of claim 12, where reassembling the bit stream of information comprises:

determining a quality of a particular one of the plurality of baseband signals; and

rejecting the particular one of the plurality of baseband signals, if the determined quality is below a particular threshold.

19. The method of claim 12, further comprising:

transmitting an acknowledgement signal to a transmitter device, indicating that the bit stream of information was received.

13. A method performed by a radio frequency receiver device, the method comprising:

receiving a multi-frequency signal;

retrieving a plurality of baseband signals from the received multi-frequency signal;

retrieving particular segments of bits from particular ones of the plurality of baseband signals; and

reassembling a bit stream of information from the retrieved segments of bits.

14. The method of claim 13, where the multi-frequency signal includes a first signal at a carrier frequency minus an intermediate frequency (IF), a second signal at the carrier frequency, and a third signal at the carrier frequency plus the IF.

15. The method of claim 14, where the retrieving a plurality of baseband signals from the received multi-frequency signal includes:

retrieving the first signal at the IF,

retrieving an in-phase component and a quadrature component of the second signal, and

retrieving the third signal at the IF.

16. The method of claim 13, where the retrieving a plurality of baseband signals from the received multi-frequency signal comprises:

splitting the received multi-frequency signal into a first branch signal and a second branch signal;

mixing the first branch signal with a cosine signal at a carrier frequency,

mixing the second branch signal with a sine signal at the carrier frequency,

shifting the mixed first branch signal;

shifting the mixed second branch signal;

summing the shifted first branch signal and an un-shifted second branch signal to retrieve a first signal; and

summing the shifted second branch signal and an un-shifted first branch signal to retrieve a third signal.

17. The method of claim 16, further comprising:

retrieving an in-phase component of a second signal from the mixed first branch signal, and

retrieving a quadrature component of the second signal from the mixed second branch signal.

20. A system comprising:

a transmitter device that includes;

a transmitter baseband controller to;

segment a bit stream into a first segment, a second segment, and a third segment, and

generate a first baseband signal that includes the first segment, a second baseband signal that includes the second segment, and a third baseband signal that includes the third segment; and

a radio frequency (RF) transmitter to;

generate a multi-frequency signal based on the first baseband signal, the second baseband signal, and the third baseband signal; and

a receiver device that includes;

an RF receiver to;

receive the multi-frequency signal, and

retrieve the first baseband signal, the second baseband signal, and the third baseband signal from the received multi-frequency signal; and

a receiver baseband control to;

reassemble the bit stream from the received first baseband signal, the received second baseband signal, and the received third baseband signal.