Incremental preamble detection

摘要

In one embodiment, the present invention is a method for performing incremental preamble detection in a wireless communication network. The method processes non-overlapping chunks of incoming antenna data, where each chunk is smaller than the preamble length, to detect the signature of the transmitted preamble. For each chunk processed, chips of the chunk are correlated with possible signatures employed by the wireless network to update a set of correlation profiles, each profile comprising a plurality of profile values. Further, an intermediate detection is performed by comparing the updated profile values to an intermediate threshold that is also updated for each chunk. Upon receiving the final chunk, the correlation profiles are updated, and a final preamble detection is made by comparing the updated profile values to a final threshold. Detections are performed on an incremental basis to meet latency requirements of the wireless network.

主权项

1. A processor-implemented method for incrementally detecting a preamble in a data signal transmitted from a transmitter and received at a receiver, the method comprising:
processing a portion of data of a set of data in the received data signal to update a set of correlation profiles based on the processed portion of data, wherein each correlation profile corresponds to a different possible preamble; wherein a total size of the set of data corresponds to a length of a preamble to be detected in the received data signal plus a specified maximum propagation delay; and wherein a size of the processed portion of data is smaller than the total size of the set of data; and performing an intermediate preamble detection attempt corresponding to the processed portion of data to determine whether a correlation profile in the updated set of correlation profiles corresponds to one of the different possible preambles, wherein the intermediate preamble detection attempt is performed before processing another portion of data in the set of data.