METHOD AND SYSTEM FOR ENHANCING THE PERFORMANCE OF WIDEBAND DIGITAL RF TRANSPORT SYSTEMS

• US 20080240225A1
• Filed: 03/27/2007
• Published: 10/02/2008
• Est. Priority Date: 03/27/2007
• Status: Abandoned Application

• Current Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Original Assignee: ADC Telecommunications Incorporated (TE Connectivity Limited)
• Inventors: Stuart, Steven B., Wala, Philip M., Hedin, John M., Zavadsky, Dean
• Application Number:
  US11/692,032
• Publication Number:
  US 20080240225A1
• Time in Patent Office: Days
• US Class Current: 375/240
• CPC Class Codes: H04J 3/1629 Format building algorithm
• CPC Class Codes: H04J 3/1647 Subrate or multislot multiplexing
• CPC Class Codes: H04J 4/005 Transmultiplexing

Abstract

A method and system for enhancing the performance of wideband digital RF transport systems, which enables the selection of a serial data rate to be transported over a transport medium. Thus, the present invention allows the system to be adapted to different transport mediums, and allows the user to set the serial data rate based on the input bandwidth of the system. The present invention also enables the transport of different bandwidth segments on a plurality of wideband channels by selecting an optimal clock sample rate for each bandwidth segment to be transported. Thus, the present invention allocates the bandwidth segments proportionally so that an optimum amount of bandwidth can be transported at the serial bit rate.

Claims

1. A method for enhancing the performance of a wideband digital RF transport system, the method comprising the steps of:

inputting a plurality of bandwidths;

setting a serial data rate for serial transmission of said plurality of bandwidths;

adjusting said plurality of bandwidths based on said set serial data rate;

converting said plurality of bandwidths to a serial form;

converting said plurality of bandwidths in serial form to a plurality of coded signals; and

transmitting said plurality of coded signals on a transmission medium.

2. The method of claim 1, further comprising the steps of:

setting an individual input sample rate for each bandwidth of said plurality of input bandwidths.

3. The method of claim 1, further comprising the steps of:

setting a serial data rate for serial reception of said plurality of bandwidths in serial form;

detecting said plurality of bandwidths in serial form from said plurality of coded signals;

converting said plurality of bandwidths in serial form to a parallel form; and

converting said plurality of bandwidths to a second plurality of bandwidths.

4. The method of claim 3, further comprising the step of:

setting an output sample rate for each bandwidth of said plurality of bandwidths.

5. The method of claim 1, wherein adjusting said plurality of bandwidths further comprises the step of:

converting said plurality of bandwidths to at least one frame structure, wherein said frame structure is configured to be transmitted at said serial data rate.

6. The method of claim 5, further comprising the step of:

controlling the conversion of said plurality of bandwidths to at least one frame structure by a controller.

7. A method for enhancing the performance of a wideband digital RF transport system, the method comprising the steps of:

inputting a plurality of bandwidths;

converting each of said plurality of bandwidths into a plurality of slots;

combining said plurality of slots from each bandwidth;

setting a number of slots per frame based on a serial data rate;

forming a plurality of frames from at least a portion of said combined plurality of slots, each frame having said set number of slots;

converting said plurality of frames to a serial form;

converting said plurality of frames in serial form to a plurality of coded signals; and

transmitting said plurality of coded signals on a transmission medium at said serial data rate.

8. The method of claim 7, further comprising the steps of:

setting an individual input sample rate for each bandwidth of said plurality of input bandwidths;

sampling each bandwidth of said plurality of bandwidths at its individual sample rate to form digital sampled data for each bandwidth; and

wherein the step of converting each of said plurality of bandwidths converts said digital sampled data for each bandwidth into a plurality of slots.

9. The method of claim 7, further comprising the steps of:

setting a serial data rate for serial reception of said plurality of bandwidths;

detecting said at least one frame structure from said plurality of coded signals;

converting said detected at least one frame to a parallel form;

deconstructing said at least one frame based on the set serial data rate to produce said combined plurality of slots;

separating said combined plurality of slots; and

converting said plurality of slots to a second plurality of bandwidths.

10. The method of claim 9, further comprising the step of:

setting an output sample rate for each bandwidth of said plurality of bandwidths.

11. The method of claim 7, wherein the step of converting said combined plurality of bandwidths is performed by a framer device.

12. The method of claim 7, wherein the step of setting a number of slots per frame is performed by a controller device.

13. A system for enhancing the performance of a wideband digital RF transport system, the system comprising:

a plurality of bandwidth input interface devices;

a plurality of sample rate devices coupled to said plurality of bandwidth input interface devices, each sample rate device of said plurality of sample rate devices configured to set an input sample rate of an associated bandwidth input interface device; and

a framer device coupled to an output of each bandwidth input interface device, and configured to create a first frame structure from said outputs of said bandwidth input interface devices when a serial data rate is set at a first rate, and configured to create a second frame structure from said outputs of said bandwidth input interface devices when said serial data rate is set at a second rate.

14. The system of claim 13, further comprising:

a control unit coupled to said framer device and configured to control said frame creation of said framer device.

15. The system of claim 14, wherein said controller controls the number of slots per frame.

16. The system of claim 13, wherein said plurality of bandwidth interface devices comprises a plurality of analog-to-digital digital down-converters.

17. The system of claim 13, wherein said plurality of sample rate device comprises a plurality of sample clocks.

18. The system of claim 13, wherein said transmit device comprises a laser transmitter device, and said transmission medium comprises an optical fiber.

19. The system of claim 13, further comprising:

a mapper combined with said framer device;

a serializer device coupled to an output of said framer device;

a transmit device coupled to an output of said serializer device; and

a transmission medium coupled to an output of said transmit device.

20. The system of claim 19, further comprising:

a digital signal detection device coupled to said transmission medium;

a deserializer device coupled to an output of said digital signal detection device;

a deframer device coupled to an output of said deserializer device, and configured to deconstruct a first frame when said serial data rate is set at a first rate and configured to deconstruct a second frame structure when said serial data rate is set at a second rate;

a control unit coupled to the deframer device and configured to control the deconstruction of said deframer device; and

a plurality of output interface devices.

21. A system for enhancing the performance of a wideband digital RF transport system, comprising:

a plurality of bandwidth input interface devices;

a plurality of sample rate devices coupled to said plurality of bandwidth input interface devices, each sample rate device of said plurality of sample rate devices configured to set an input sample rate of an associated bandwidth input interface device;

a mapper/framer device coupled to an output of each bandwidth input interface device, and configured to create a frame structure from the outputs of the bandwidth input interface devices;

a control unit coupled to the mapper/framer and configured to set a first serial data rate and control said mapper/framer to create first frame structure based on said first serial data rate, and configured to set a second serial data rate and control said mapper/framer to create a second frame structure based on said second data rate;

a serializer device coupled to an output of said framer device; and

a transmit device coupled to an output of said serializer device and configured to transmit at a serial data rate set by the control unit.

22. The system of claim 21, wherein said controller controls the number of slots per frame.

23. The system of claim 21, wherein said transmit device comprises a laser transmitter device, and said transmission medium comprises an optical fiber.

24. The system of claim 21, further comprising:

a transmission medium coupled to an output of said transmit device.

25. The system of claim 24, further comprising:

a digital signal detection device coupled to said transmission medium;

a deserializer device coupled to an output of said digital signal detection device;

a demapper/deframer device coupled to an output of said deserializer device, and configured to deconstruct a frame; and

a control unit coupled to the demapper/deframer device and configured to set a first serial data rate and control the demapper/deframer to deconstruct first frame structure based on said first serial data rate, and configured to set a second serial data rate and control the demapper/deframer to deconstruct a second frame structure based on said second data rate; and

a plurality of output interface devices.