Detection of active spreading codes and modulation schemes
AssigneeIntel IP Corporation
InventorSilvano Gori
Life of this patent
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Abstract
A channelization code analyzer for determining active channelization codes includes a despreading unit configured to despread a received signal with a plurality of candidate channelization codes to generate a plurality of despreaded signals. The channelization code analyzer further includes a detector configured to detect from the plurality of despreaded signals a set of despreaded signals modulated with a predetermined first modulation scheme. A channelization code identification unit is configured to identify at least one active channelization code from the plurality of candidate channelization codes based on the detected set of despreaded signals. Further, a radio receiver apparatus, a second moment and fourth moment processing unit and a modulation scheme detector are described.
Claims9
A channelization code analyzer for determining active channelization codes, comprising:
- a despreader configured to despread a received signal with a plurality of candidate channelization codes to generate a plurality of despreaded signals;
- a detector configured to detect from the plurality of despreaded signals a set of despreaded signals modulated with a predetermined modulation scheme, wherein the detector comprises:
- an estimator configured to estimate a total noise power of the received signal,
- wherein the detector is further configured to detect the set of despreaded signals based on the estimated total noise power;
- and
- a channelization code identifier configured to identify at least one active channelization code from the candidate channelization codes based on the detected set of despreaded signals.
A channelization code analyzer for determining active channelization codes, comprising:
- a despreader configured to despread a received signal with a plurality of candidate channelization codes to generate a plurality of despreaded signals;
- a detector configured to detect from the plurality of despreaded signals a set of despreaded signals modulated with a predetermined modulation scheme, wherein the detector comprises:
- a second moment and a fourth moment estimator configured to output, for each despreaded signal, the second moment and the fourth moment,
- wherein the detector is further configured to detect the set of despreaded signals based on the second moment and the fourth moment;
- and
- a channelization code identifier configured to identify at least one active channelization code from the candidate channelization codes based on the detected set of despreaded signals.
Dependencies are inferred from the claim text.