Title :
16-point high speed (I)FFT for OFDM modulation
Author :
Bertazzoni, S. ; Cardarilli, G.C. ; Iannuccelli, M. ; Salmeri, M. ; Salsano, A. ; Simonelli, O.
Author_Institution :
Dept. of Electron. Eng., Rome Univ., Italy
fDate :
31 May-3 Jun 1998
Abstract :
In this paper we present the implementation of a 16-point (I)FFT ((Inverse) Fast Fourier Transform) with 24-bit complex data precision suitable for OFDM applications. The die measures 3.2×3.3 mm2 and is fabricated in double metal 0.7 μm ES2 CMOS technology. Our algorithm does not use any multiplier allowing a throughput up to 85 MWord/s and reducing the core area to less than 5 mm2. It is also possible to implement a 256-point (I)FFT using two 16-point devices and a complex multiplier
Keywords :
CMOS digital integrated circuits; fast Fourier transforms; frequency division multiplexing; modulators; (I)FFT; 0.7 micron; 24 bit; OFDM modulation; complex data precision; complex multiplier; core area; double metal ES2 CMOS technology; inverse fast Fourier transform; modulators; throughput; Bandwidth; CMOS technology; Data engineering; Discrete Fourier transforms; Fading; Fast Fourier transforms; OFDM modulation; Partitioning algorithms; Throughput; Wireless LAN;
Conference_Titel :
Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-4455-3
DOI :
10.1109/ISCAS.1998.694445
