Efficient implementation of 3780-point FFT on a 16-core processor

The 3780-point FFT is a main component of the time domain synchronous OFDM (TDS-OFDM) system in the Chinese Digital Multimedia/TV Broadcasting-Terrestrial (DMB-T) national standard. In this paper, we proposed an efficient implementation for 3780-point FFT on multi-core processors, which makes full use of the parallelism of FFT application and multi-core system. Experiment results demonstrate that multi-core 3780-point FFT implementation not only achieves a speedup ratio of 6.475 over single core implementation but also maintains a great flexibility compared with ASIC implement.