Acquisition of a Code Modulated Signal
First Claim
1. A method for supporting an acquisition of a-code modulated signal received at a receiver, wherein at least a first set of correlation results for correlations between said code modulated signal and a first replica code with different code phases and a second set of correlation results for correlations between said code modulated signal and a second replica code with different code phases are available, said method comprising:
- combining results from said first set of correlation results and from said second set of correlation results, wherein correlation results used in said combination are selected based on information on a relative difference between a correct code phase for said first replica code and a correct code phase for said second replica code; and
determining based on said combination whether at least one of said first set of correlation results and said second set of correlation results comprises a correlation result representing said correct code phase for said first replica code or said second replica code, respectively.
12 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to the acquisition of a code modulated signal, wherein a first set of correlation results for correlations between the code modulated signal and a first replica code with different code phases and a second set of correlation results for correlations between the code modulated signal and a second replica code with different code phases are available. In order to achieve a high sensitivity, results from both sets of correlation results are combined, wherein correlation results used in the combination are selected based on information on a relative difference between a correct code phase for both replica codes. Then, it is determined based on the combination whether at least one of the sets of correlation results comprises a correlation result representing the correct code phase for the first replica code or the second replica code, respectively.
-
Citations
21 Claims
-
1. A method for supporting an acquisition of a-code modulated signal received at a receiver, wherein at least a first set of correlation results for correlations between said code modulated signal and a first replica code with different code phases and a second set of correlation results for correlations between said code modulated signal and a second replica code with different code phases are available, said method comprising:
-
combining results from said first set of correlation results and from said second set of correlation results, wherein correlation results used in said combination are selected based on information on a relative difference between a correct code phase for said first replica code and a correct code phase for said second replica code; and determining based on said combination whether at least one of said first set of correlation results and said second set of correlation results comprises a correlation result representing said correct code phase for said first replica code or said second replica code, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A decision module for supporting an acquisition of a code modulated signal received at a receiver, wherein said decision module has access to at least a first set of correlation results for correlations between said code modulated signal and a first replica code with different code phases and a second set of correlation results for correlations between said code modulated signal and a second replica code with different code phases,
wherein said decision module is adapted to combine results from said first set of correlation results and from said second set of correlation results, wherein correlation results used in said combination are selected by said decision module based on information on a relative difference between a correct code phase for said first replica code and a correct code phase for said second replica code; - and
wherein said decision module is adapted to determine based on said combination whether at least one of said first set of correlation results and said second set of correlation results comprises a correlation result representing said correct code phase for said first replica code or said second replica code, respectively. - View Dependent Claims (14, 15, 16, 17, 18, 19)
- and
-
20. A memory having instructions encoded thereon for execution by a processing unit, for supporting an acquisition of a code modulated signal received at a receiver, wherein at least a first set of correlation results for correlations between said code modulated signal and a first replica code with different code phases and a second set of correlation results for correlations between said code modulated signal and a second replica code with different code phases are available, said instructions realizing the following when running in said processing unit:
-
combining results from said first set of correlation results and from said second set of correlation results, wherein correlation results used in said combination are selected based on information on a relative difference between a correct code phase for said first replica code and a correct code phase for said second replica code; and determining based on said combination whether at least one of said first set of correlation results and said second set of correlation results comprises a correlation result representing said correct code phase for said first replica code or said second replica code, respectively.
-
-
21. (canceled)
Specification