Patent ID: 9331806
Filing Date: 2016-05-03
CPC Classification: H04J

Claim Text:
1. A system for searching for a set of Zadoff-Chu sequences, the system comprises: an interface that is arranged to receive a set of first antenna signals that represent input signals received by the first antenna; a processor; and a hardware accelerator; wherein the hardware accelerator is arranged to perform, for each Zadoff-Chu sequence of at least a first sub-set of the set of Zadoff-Chu sequences, a first hardware accelerator set of operations that comprises performing a frequency domain to time domain transformation of a second intermediate vector that is representative of multiplication of Zadoff-Chu sequence and the set of first antenna signals to provide a third intermediate vector that is associated with the Zadoff-Chu sequence; wherein the processor is arranged to perform, for each Zadoff-Chu sequence of at least a second sub-set of Zadoff-Chu sequences, a first processor set of operations that comprises: wherein the processor is arranged to execute the first processor set of operations related to a certain Zadoff-Chu sequence when the hardware accelerator is arranged to execute the first hardware accelerator set of operations relating to another Zadoff-Chu sequence; wherein the at least first sub-set of the set of Zadoff-Chu sequences does not include at least one first residual Zadoff-Chu sequence of the set of Zadoff-Chu sequences; and wherein the processor is arranged to solely search for the presence of each first residual Zadoff-Chu sequence in the set of first antenna signals; and wherein the processor is arranged to execute a search of one or more residual Zadoff-Chu sequences in a non-continuous manner and during time windows resulting from time differences between a duration of an execution of the hardware accelerator set of operations and a duration of the processor set of operations.