Method and equipment for generating frequency-domain Zadoff-Chu sequences

Abstract

The invention discloses a method and equipment for generating frequency-domain Zadoff-Chu (ZC) sequences. The method comprises the following steps of: generating time-domain ZC sequences according to a formula; calculating the summation of the time-domain ZC sequences; selecting a time-domain sample point value from the ZC sequences according to a predetermined frequency-domain index value; performing a conjugate operation on the selected time-domain sample point value; obtaining a result obtained by multiplying the time-domain ZC sequence by the time-domain sample point value after the conjugate operation; generating a phase rotation angle according to a predetermined cyclic shift offset; and multiplying the result which is obtained by multiplying the time-domain ZC sequence by the time-domain sample point value after the conjugate operation by the phase rotation angle to obtain the frequency-domain ZC sequence. In the method, the aim of transforming the time-domain ZC sequence into the frequency-domain ZC sequence is fulfilled by adopting a digital signal processing process which is equivalent to discrete Fourier transform (DFT); and the problems of large calculation amount, low operating speed, increased chip area and power and the like in the process of generating the frequency-domain ZC sequence by adopting the DFT because calculation numeric value types are not matched in the prior art are solved.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method and equipment for generating Zadoff-Chu sequences in the frequency domain. Background technique [0002] The LTE (Long Term Evolution, Long Term Evolution) system is widely regarded as a quasi-4G wireless communication system, which has a transmission rate of 100M downlink and 50M uplink, and supports higher mobile speed (350km / h) and larger cell coverage radius (100 kilometers), supporting 200 users per community online at the same time. In addition, LTE also has flexible bandwidth configuration (1.4M ~ 20M), supports multimedia broadcasting services and end-to-end QoS (Quality of Service, quality of service) and other characteristics. Therefore, LTE is also considered to be the development direction of future mobility and the candidate standard of 4G technology. [0003] Before normal user data communication, UE (User Experience, user experience) must first perf...

AI Technical Summary

Problems solved by technology

[0011] In view of this, the present invention provides a method and device for generating ZC sequences in the frequency domain to solve the problems of large amount of calculation, slow calculation speed, increased chip area and power consumption in the prior art.

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