Paper Info
Title
Architecture and Performance Analysis of Lossless FFT in OFDM Systems
Abstract
The design of fast Fourier transform (FFT) architecture is one of the bottlenecks in the implementation of OFDM systems. With the recent progress on the development of lossless transform, its possible applications in communication systems have received more and more attention. In this paper, a lossless integer FFT (IntFFT) architecture based on radix-22 FFT algorithm is analyzed and implemented. By exploring the symmetric property, the overall memory usage is reduced by 27.4% for a 64-point FFT design. The variance of quantization loss for both IntFFT and conventional fixed-point FFT (FxpFFT) is derived. The signal to quantization loss ratio (SQNR) and the bit error rate (BER) performance in system level is also simulated to test the accuracy of IntFFT. Based on the simulation results, IntFFT can yield comparative performance while using less memory usage than FxpFFT designs
Year
DOI
Venue
2006
10.1109/ICASSP.2006.1660831
ICASSP (3)
Keywords
Field
DocType
bit error rate,lossless integer fft architecture,fast fourier transform architecture,communication systems,ofdm modulation,orthogonal frequency division multiplexing,quantisation (signal),ber,sqnr,ofdm systems,error statistics,quantization loss,fixed-point fft,fast fourier transforms,signal to quantization loss ratio,communication system,quantization,computer architecture,fixed point,fast fourier transform
Split-radix FFT algorithm,Computer science,Communications system,Theoretical computer science,Artificial intelligence,Computer engineering,Bit error rate,Pattern recognition,Prime-factor FFT algorithm,Fast Fourier transform,Quantization (signal processing),Orthogonal frequency-division multiplexing,Lossless compression
Conference
Volume
ISSN
ISBN
3
1520-6149
1-4244-0469-X
Citations 
PageRank 
References 
0
0.34
3
Authors
2
Name
Order
Citations
PageRank
Wei-Hsin Chang110510.25
Truong Q. Nguyen21402136.69