Channel sounding techniques

A system, comprising:

• one or more processors configured to:
• receive a circularly-shifted Constant Amplitude Zero Autocorrelation (CAZAC) sequence from a wireless channel;
• detect a timing signal that is synchronized to occur at a same target time as a timing signal at a transmitter of the CAZAC sequence that is used by the transmitter to initiate transmission of the sequence, wherein the CAZAC sequence is transmitted in a repeated manner by the transmitter;
• and
• process the received circularly-shifted CAZAC sequence to generate a time of arrival (TOA) and a channel impulse response (CIR) of the wireless channel, wherein the processing begins based on samples received after a point in time and includes correlation of received samples with at least a portion of a local version of the transmitted CAZAC sequence, wherein the point in time corresponds to the length of the CAZAC sequence after the timing signal and wherein the correlation operates only on samples received after the point in time.

A non-transitory computer readable storage medium having stored thereon design information that specifies a design of at least a portion of a hardware circuit in a format recognized by a computing system configured to process the design information to implement the circuit according to the design, wherein the design information specifies that the implemented circuit includes:

• one or more processors configured to:
• receive a circularly-shifted Constant Amplitude Zero Autocorrelation (CAZAC) sequence from a wireless channel;
• detect a timing signal that is synchronized to occur at a same target time as a timing signal at a transmitter of the CAZAC sequence that is used by the transmitter to initiate transmission of the sequence, wherein the CAZAC sequence is transmitted in a repeated manner by the transmitter;
• and
• process the received circularly-shifted CAZAC sequence to generate a time of arrival (TOA) and a channel impulse response (CIR) of the wireless channel, wherein the processing begins based on samples received after a point in time and includes correlation of received samples with at least a portion of a local version of the transmitted CAZAC sequence, wherein the point in time corresponds to the length of the CAZAC sequence after the timing signal and wherein the correlation operates only on samples received after the point in time.