Redundant Floating-Point Fast Fourier Transform (FFT) Coprocessor

High-speed real-time multimedia services, such as high-definition video streaming through wireless communication systems require FFT IP cores. This core consists of many consecutive multiplications and additions over complex numbers. Most of FFT architectures have been using fixed-point arithmetic, until recently that FFTs based on floating-point operations grow.

The demand for high-speed real-time multimedia services, such as high-definition video streaming through wireless communication systems, has increased in the last decade This has led to a change on standard for wireless personal area networks to meet the application demands, wherein the orthogonal frequency division multiplexing (OFDM) is the most common modulation scheme. Given that Fast Fourier Transform (FFT) has a significant impact on the performance of OFDM-based communication systems, improvements on FFT are of paramount importance