METHOD AND APPARATUS FOR DICTIONARY CONSTRUCTION FOR VSB CHANNEL MODELING

• US 20090225893A1
• Filed: 03/06/2008
• Published: 09/10/2009
• Est. Priority Date: 03/06/2008
• Status: Abandoned Application

• Current Assignee: Legend Silicon Corporation
• Original Assignee: Legend Silicon Corporation
• Inventors: YANG, LIN, LIU, QIN
• Application Number:
  US12/043,158
• Publication Number:
  US 20090225893A1
• Time in Patent Office: Days
• US Class Current: 375/270
• CPC Class Codes: H04L 25/0212 of impulse response
• CPC Class Codes: H04L 25/024 channel estimation algorithms

Abstract

A method for creating a dictionary for channel modeling is provided. The method comprising the steps of: providing a channel subject to modeling associated with a VSB system; over-sampling a predetermined segment; and using at least part of the over-sampled values as elements or words of the dictionary.

Claims

1. A method for creating a dictionary for channel modeling, comprising the steps of:

providing a channel subject to modeling associated within a VSB system;

over-sampling a predetermined segment; and

using at least part of the over-sampled values as elements or words of the dictionary.

2. The method of claim 1, wherein the over-sampling step is performed in the time domain.

4. The method of claim 1, further comprising the step of providing a SRRC filter associated with a channel subject to modeling.

5. The method of claim 4, wherein the SRRC filter acts in the Frequency domain.

6. The method of claim 4 further comprising the step of providing the correlation functions associated with the fixed SRRC to provide more elements or words for the dictionary.

7. A VSB receiver comprising:

a channel estimator having a method for creating a dictionary for channel modeling;

the method comprising the steps of;

providing a channel subject to modeling associated with a VSB system;

over-sampling a predetermined segment; and

using at least part of the over-sampled values as elements or words of the dictionary.

3. The method of claim 8, wherein the over-sampling step comprises a rate for dividing the predetermined segment by about ½

⁵ to ½

⁸.

8. The receiver of claim 7, wherein the over-sampling step is performed in the time domain.

9. The receiver of claim 8, wherein the over-sampling step comprises a rate for dividing the predetermined segment by about ½

⁵ to ½

⁸.

10. The receiver of claim 7, further comprising the step of providing a SRRC filter associated with a channel subject to modeling.

11. The receiver of claim 10, wherein the SRRC filter acts in the Frequency domain.

12. The receiver of claim 10 further comprising the step of providing the correlation functions associated with the fixed SRRC to provide more elements or words for the dictionary.