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Table 2 Performance comparison between the new FFT/iFFT and TIs

From: Instruction scheduling heuristic for an efficient FFT in VLIW processors with balanced resource usage

Implementation

FFT size

CPPR2B

Cycles

Relative gain over TI (%)

New FFT

1k

1.206

6175

37.62

TI FFT

1k

1.933

9899

-

New FFT

4k

1.119

27502

46.65

TI FFT

4k

2.097

51547

-

New FFT

8k

1.896

100979

53.63

TI FFT

8k

4.090

217782

-

New iFFT

1k

1.211

6198

47.89

TI iFFT

1k

2.323

11894

-

New iFFT

4k

1.130

27779

53.50

TI iFFT

4k

2.431

59745

-

New iFFT

8k

1.896

100977

56.59

TI iFFT

8k

4.368

232613

-