Abstract: A method for generating a modified orthogonal frequency division multiplexing (OFDM) symbol, the method may include generating, for each pair of FDR error and outer OFDM symbol constellation sample that belong to a same sub-carrier, a modified OFDM symbol constellation sample thereby providing multiple modified OFDM symbol constellation samples; and calculating the modified OFDM symbol; wherein the calculating of the modified OFDM symbol comprises performing a frequency domain to time domain conversion of (a) the multiple modified OFDM symbol constellation samples and (b) unmodified OFDM symbol constellation samples.

Abstract: A system that includes an interface, a processor; and a hardware accelerator. 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 includes frequency to time domain conversion to provide third intermediate vector that is associated with the Zadoff-Chu sequence. The processor is arranged to complete the Zadoff-Chu sequence search in response to the third intermediate vector—whereas the hardware accelerator and the processor are arranged to partially search the same Zadoff-Chu sequence at different periods of time.