Low overhead control channel for wireless audio systems

1. A wireless audio device comprising:

a processor configured to:

communicate using a frame scheme comprising a plurality of frames, wherein each of the plurality of frames includes a broadcast channel slot;

receive a physical layer parameter included in the broadcast channel slot;

determine a modulation scheme corresponding to a control channel based on the physical layer parameter; and

decode control data received via the control channel using the modulation scheme.

2. The wireless audio device of claim 1 , wherein the physical layer parameter is a first physical layer parameter and the modulation scheme is a first modulation scheme, the processor further configured to:

receive a second physical layer parameter included in the broadcast channel slot; and

determine a second modulation scheme corresponding to an audio channel based on the second physical layer parameter.

3. The wireless audio device of claim 2 , the processor further configured to:

decode audio data received via the audio channel using the second modulation scheme.

4. The wireless audio device of claim 2 , wherein the first modulation scheme is different from the second modulation scheme.

5. The wireless audio device of claim 1 , wherein each frame includes a downlink portion and an uplink portion, and wherein the frame scheme repeats every N frames, wherein N is an integer greater than or equal to 1.

6. The wireless audio device of claim 1 , wherein the physical layer parameter includes information used to access an audio system, including a number of frames N in the frame scheme, wherein N is an integer greater than or equal to 1.

7. The wireless audio device of claim 1 , wherein the processor is further configured to:

operate separate physical layer channels for second audio data and second control data; and

transmit the second audio data and the second control data using a single wideband carrier.

8. The wireless audio device of claim 1 , wherein the processor is further configured to:

encode second control data; and

transmit the encoded second control data via the control channel using the modulation scheme.

9. A wireless audio device comprising:

a processor configured to:

operate a first physical layer channel using audio data having a first modulation scheme;

operate a second physical layer channel using control data having a second modulation scheme;

modify the second modulation scheme of the control data based on a desired control data latency; and

transmit the audio data and the control data using a single wideband carrier.

10. The wireless audio device of claim 9 ,

wherein the wireless audio device comprises a base station configured to connect to a recorder or mixer; and

wherein the processor is further configured to:

receive second audio data and second control data on the single wideband carrier; and

decode the second audio data and the second control data.

11. The wireless audio device of claim 9 , wherein the first modulation scheme is different from the second modulation scheme.

12. The wireless audio device of claim 9 , wherein the processor is further configured to use different coding rates for the control data and the audio data.

13. The wireless audio device of claim 12 , wherein the processor is further configured to determine one or both of a coding rate for the audio data and a coding rate for the control data based on a desired bit error rate.

14. The wireless audio device of claim 9 , wherein the processor is further configured to communicate using a frame scheme comprising a plurality of frames, wherein each of the plurality of frames includes a broadcast channel slot.

15. A method of operating a wireless audio device of an audio system, the method comprising:

operating a first physical layer channel using audio data having a first modulation scheme;

operating a second physical layer channel using control data having a second modulation scheme;

modifying the second modulation scheme of the control data based on a desired capacity of the audio system; and

transmitting the audio data and the control data using a single wideband carrier.

16. The method of claim 15 , wherein the first modulation scheme is different from the second modulation scheme.

17. The method of claim 15 , wherein the audio data and the control data have different coding rates.

18. The method of claim 15 , further comprising:

operating the wireless audio device using a frame scheme comprising a plurality of frames, wherein each of the plurality of frames includes a broadcast channel slot.

19. The method of claim 18 , wherein the broadcast channel slot includes a physical layer parameter corresponding to one or both of the first physical layer channel and the second physical layer channel.

20. The method of claim 15 , further comprising:

receiving second audio data and second control data on the single wideband carrier; and

decoding the second audio data and the second control data.