Title :
On the numerical accuracy of CORDIC-based frequency offset compensation in burst oriented OFDM systems
Author :
Kabulepa, L.D. ; Kella, T. ; Pionteck, Thilo ; Ludewig, R. ; Becker, J. ; Plechinger, J. ; Glesner, M.
Author_Institution :
Inst. of Microelectron. Syst., Darmstadt Univ. of Technol., Germany
fDate :
6/23/1905 12:00:00 AM
Abstract :
CORDIC (COordinate Rotation DIgital Computer)-based VLSI architectures are very interesting for the design of frequency offset estimation and correction circuits for OFDM burst oriented systems because of the simplicity of their hardware implementation. This paper evaluates the lower realizable bound on the accuracy of fixed-point CORDIC-based frequency offset estimation and correction schemes. The proposed evaluation relies on the Cramer-Rao lower bound (CRLB) and the upper bound of the error introduced by the CORDIC algorithm. Simulations results related to the application of this evaluation scheme to a HiperLAN/2 simulation model are presented
Keywords :
OFDM modulation; VLSI; fixed point arithmetic; frequency estimation; telecommunication switching; wireless LAN; CORDIC-based frequency offset compensation; Cramer-Rao lower bound; HiperLAN/2 simulation model; VLSI architectures; burst oriented OFDM systems; fixed-point correction; fixed-point estimation; hardware implementation; lower realizable bound; upper bound; Circuits; Computer architecture; Computer errors; Fading; Frequency estimation; Frequency synchronization; Hardware; Microelectronics; OFDM modulation; Very large scale integration;
Conference_Titel :
Electronics, Circuits and Systems, 2001. ICECS 2001. The 8th IEEE International Conference on
Print_ISBN :
0-7803-7057-0
DOI :
10.1109/ICECS.2001.957678
