Marvellworld Trade Ltd.

Marvell International Limited

Ceva D.s.p. Ltd.

Tal Shalev

Ezer Melzer

Kobby Pick

Zeev Kaplan

Omri Isaacs

Ariel Pinhas

A system and method for cell synchronization suitable for a wireless signal including substantially identical synchronization signals that repeat in predetermined time intervals, the synchronization signals including a plurality of substantially identical symbols. For a plurality of candidate synchronization points: dividing the wireless signal into a plurality of signal segments, each equal or longer than the time interval, and each including a plurality of sub-segments having substantially same length as the symbol; performing symbol-length cross-correlations between an expected symbol and the sub-segments; performing segmented symbol-wise correlations between the cross-correlation results; calculating a cost function based on the results of the symbol-wise correlations; accumulating the cost functions across a plurality of signal segments; and selecting a coarse synchronization point from the plurality of candidate synchronization points based on the accumulated cost function; Estimating synchronization parameters e.g. time and frequency offset based on the selected synchronization point.

System and method for radio cell synchronization

A method includes accepting input values u and v, respectively identifying a uroot Zadoff-Chu sequence whose length is a prime number, and a vcyclic shift for the sequence. Elements of a Discrete Fourier Transform (DFT) of the vcyclic shift of the uroot Zadoff-Chu sequence are computed using processing circuitry, by evaluating a single respective exponent depending on u and v in computing each of the elements.

Direct generation of discrete Fourier transforms of time-shifted Zadoff-Chu sequences

A method includes, in a communication device, defining multiple state machines including states and respective state conditions that depend on a set of events. Relative priorities are defined, to be applied among the state machines in scheduling the state machines for execution in response to the events. The events are monitored and the state conditions are evaluated based on the monitored events. The state machines are executed based on the evaluated state conditions using a scheduling order that depends on the priorities.

Event-driven state-machine sequencer

Direct generation of discrete fourier transforms of time-shifted Zadoff-Chu sequences

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Kfar Shmuel, Israel

Tal Shalev