Title
A scalable FFT processor architecture for OFDM based communication systems
Abstract
The modern wireless standards predominantly are based on OFDM communication systems. Various mobile devices in recent times support multiple wireless standards and demand efficient transceiver. Hence, in a communication transceiver the baseband hardware needs to be scalable and efficient across multiple standards. In an OFDM based transceiver, FFT computation is one of the most computationally intensive and power hungry modules. Design of FFT hardware is a challenging task while balancing design parameters such as speed, power, area, flexibility and scalability. The research work in this paper proposes a scalable radix-2 N-point novel FFT processor architecture. The architecture design is based on an approach to balance various specified design parameters to meet the requirements of SDR platforms supporting multiple wireless standards. The FFT processor was designed and prototyped using VHDL on an Altera Stratix V FPGA device 5SGSMD5K2F40C2. The processor operates at a maximum frequency of 200MHz, uses less than 1% of FPGA device resources and meets the performance requirements of multiple wireless standards such as IEEE 802.11a/g, IEEE 802.16e, 3GPP-LTE, DAB and DVB. The proposed architecture outperforms the existing fixed and variable length FFT processors in terms of speed, flexibility and scalability.
Year
DOI
Venue
2013
10.1109/SAMOS.2013.6621101
Embedded Computer Systems: Architectures, Modeling, and Simulation
Keywords
Field
DocType
OFDM modulation,fast Fourier transforms,field programmable gate arrays,hardware description languages,mobile computing,radio transceivers,software radio,Altera Stratix V FPGA device 5SGSMD5K2F40C2,FFT computation,OFDM based communication systems,OFDM based transceiver,VHDL,baseband hardware,communication transceiver,frequency 200 MHz,modern wireless standards,power hungry modules,scalable radix-2 N-point novel FFT processor architecture,FFT processor,FPGA,OFDM,Software Defined Radio
Stratix,Wireless,Software-defined radio,Computer science,Field-programmable gate array,Digital Video Broadcasting,VHDL,Orthogonal frequency-division multiplexing,Embedded system,Scalability
Conference
Citations 
PageRank 
References 
6
0.56
2
Authors
4
Name
Order
Citations
PageRank
Revanna, D.160.56
Anjum, O.260.56
Cucchi, M.360.56
Airoldi, R.4121.38