TY - GEN
T1 - Variable 2K/4K/8K-point FFT/IFFT with compact memory for OFDM-based DVB-T system
AU - Choi, Jun Rim
AU - Kim, Hui Gon
AU - Han, Seung Soo
AU - Hwang, Sun Cheol
PY - 2012
Y1 - 2012
N2 - We Propose a 2K/4K/8K point FFT (Fast Fourier Transform) for OFDM (Orthogonal Frequency Division Multiplexing) of DVB-H (Digital Video Broadcast Terrestrial) Receiver. The proposed FFT architecture utilizes cascaded radix-4 single path feedback (SDF) structure based on the Radix-2/Radix-4 FFT algorithm.[11] We use block floating point scaling technique in order to increase SQNR. The 2K/8K FFT consists of 5 cascaded stages of radix-4 and 3 stages of radix-2 butterfly units. The SQNR of 58dB is achieved with 10-bit data input, 14-bit internal data and twiddle factors, and 18-bit data output. The core has 75,804 gates with 204,672 bits of RAM and 33,572 bits of ROM using 0.18um CMOS technology
AB - We Propose a 2K/4K/8K point FFT (Fast Fourier Transform) for OFDM (Orthogonal Frequency Division Multiplexing) of DVB-H (Digital Video Broadcast Terrestrial) Receiver. The proposed FFT architecture utilizes cascaded radix-4 single path feedback (SDF) structure based on the Radix-2/Radix-4 FFT algorithm.[11] We use block floating point scaling technique in order to increase SQNR. The 2K/8K FFT consists of 5 cascaded stages of radix-4 and 3 stages of radix-2 butterfly units. The SQNR of 58dB is achieved with 10-bit data input, 14-bit internal data and twiddle factors, and 18-bit data output. The core has 75,804 gates with 204,672 bits of RAM and 33,572 bits of ROM using 0.18um CMOS technology
KW - Block Floating Point
KW - Digital Video Broadcast Terrestrial
KW - Orthogonal Frequency Division Modulation
KW - Single Delay Feedback
UR - http://www.scopus.com/inward/record.url?scp=84864265503&partnerID=8YFLogxK
U2 - 10.1109/ICSAI.2012.6223173
DO - 10.1109/ICSAI.2012.6223173
M3 - Conference contribution
AN - SCOPUS:84864265503
SN - 9781467301992
T3 - 2012 International Conference on Systems and Informatics, ICSAI 2012
SP - 977
EP - 980
BT - 2012 International Conference on Systems and Informatics, ICSAI 2012
T2 - 2012 International Conference on Systems and Informatics, ICSAI 2012
Y2 - 19 May 2012 through 20 May 2012
ER -