Claims
- 1. A method of adjusting a receiving device in response to sensing symbols comprising:
(a) adjusting an automatic gain control in response receiving a first symbol of a data unit from a first antenna; (b) receiving at least a second and a third symbol of said data unit and in response thereto (1) calculating a first energy of at least one of said second and third symbol, (2) calculating a first frequency offset of at least one of said second and third symbol, and (3) calculating a first temporal offset of at least one of said second and third symbol; (c) adjusting said automatic gain control in response receiving a fourth symbol of said data unit from a second antenna; (d) receiving at least a fifth and a sixth symbol of said data unit and in response thereto (1) calculating a second energy of at least one of said fifth and sixth symbol, (2) calculating a second frequency offset of at least one of said fifth and sixth symbol, and (3) calculating a second temporal offset of at least one of said fifth and sixth symbol; and (e) selecting at least one of said first and second antenna based upon said first and second energy.
- 2. The method of claim 1 wherein said automatic gain control is a single automatic gain control circuit.
- 3. The method of claim 1 wherein said first, second, third, fourth, and fifth symbols are in a non-sequential order.
- 4. The method of claim 1 wherein said automatic gain control adjusts the amplitude variation of the received symbols at the input to an analog-to-digital converter.
- 5. The method of claim 1 wherein said first frequency offset and said second frequency offsets are coarse offset frequency determinations.
- 6. The method of claim 1 wherein said first temporal offset and said second temporal offset are timing synchronization.
- 7. The method of claim 1 wherein said comparison between said first and second energy is a magnitude determination.
- 8. The method of claim 1 further comprising sensing an initial symbol from said first antenna prior to said first symbol.
- 9. The method of claim 8 further comprising sensing an intermediate symbol from said second antenna prior to sensing said fourth symbol and after sensing said third symbol.
- 10. The method of claim 9 further comprising switching from said first antenna to said second antenna prior to receiving said fourth symbol and after receiving said first symbol.
- 11. The method of claim 10 wherein said switching occurs during one symbol duration.
- 12. The method of claim 10 wherein said first symbol, said second symbol, said third symbol, said fourth symbol, said fifth symbol, said sixth symbol, said switching, said initial symbol, and said intermediate symbol occurs within a time duration of nine symbols.
- 13. The method of claim 12 further comprising switching from said second antenna to said first antenna after receiving said sixth symbol and no later than a tenth symbol of said data unit.
- 14. The method of claim 8 wherein said sixth symbol is received no later than a tenth symbol of said data unit.
- 15. The method of claim 9 wherein said sixth symbol is received no later than a tenth symbol of said data unit.
- 16. The method of claim 10 wherein said sixth symbol is received no later than a tenth symbol of said data unit.
- 17. The method of claim 12 wherein said sixth symbol is received no later than a tenth symbol of said data unit.
Parent Case Info
[0001] This application claims priority of U.S. patent application Ser. No. 09/510,907; filed on Feb. 23, 2000; which claims the benefit of Provisional Patent Application Serial No. 60/141,419; filed Jun. 29, 1999
Provisional Applications (1)
|
Number |
Date |
Country |
|
60141419 |
Jun 1999 |
US |
Continuations (1)
|
Number |
Date |
Country |
Parent |
09510907 |
Feb 2000 |
US |
Child |
10337551 |
Jan 2003 |
US |