Design and Realization of Non-radix-2 FFT Prime Factor Processor for 5G Broadcasting in Release 16

In the newly frozen Release 16 standard of 3GPP, in order to expand the application scenarios of 5G broadcasting, a new parameter set is added to the physical layer, and a Fourier transform of non-base 2 prime factors is required. This paper proposes an optimization framework based on prime factorization algorithm and hybrid base algorithm in response to the needs of the new parameter set of the 5G broadcast physical layer. A flexible and efficient double-precision floating-point number mixed base 2n*3m -point FFT vector processor is designed. Experimental results show that the FFT vector processing algorithm designed in this paper has the advantages of flexible calling and simple structure, and has a good application prospect in the design of 5G broadcasting systems.