Method of generating q-order ZC (Zadoff-Chu) sequence for LTE (Long Term Evolution) uplink reference signals and device

The invention discloses a method of generating a q-order ZC (Zadoff-Chu) sequence for LTE (Long Term Evolution) uplink reference signals and a device. A look-up table method is used for reducing the calculation amount during the ZC sequence generation process; according to an initial phase value, an initial accumulated value and an iterative element value, the phase value of the q-order ZC sequence is generated through an iterative method; during the iterative process, data characteristics are used for only keeping a decimal part for the accumulated value so as to reduce bit wide limitations. The process considers storage limitations and calculation overhead in an actual fixed point system, the look-up table method and the iterative method are adopted to reduce the calculation amount during the ZC sequence generation process, low bit wide resources are used in a condition of ensuring data precision, and the system calculation efficiency is improved. The invention also discloses a device for generating the q-order ZC sequence for the LTE uplink reference signals.