Title :
Implementation of Frequency Domain Equalizer for Single Carrier Transmission
Author :
Gheorghiu, Valentin ; Kameda, Suguru ; Takagi, Tadashi ; Tsubouchi, Kazuo ; Adachi, Fumiyuki
Author_Institution :
QUALCOMM Japan Inc., Tokyo
Abstract :
Single-carrier (SC) transmission using frequency domain equalization (FDE) based on the minimum mean square error (MMSE) criterion is an efficient way to combat the effects of frequency selective fading. In this paper, we discuss several key aspects concerning the implementation of a frequency domain equalizer and propose a feasible design. One of the problems is the implementation of the division operator used to compute the equalization weights. The CORDIC algorithm was employed for this as it reduces the hardware overhead. The proposed design was implemented in a FPGA and the performance was evaluated through experimental data.
Keywords :
digital arithmetic; equalisers; field programmable gate arrays; frequency-domain analysis; least mean squares methods; CORDIC algorithm; FPGA; MMSE criterion; field programmable gate arrays; frequency domain equalizer; frequency selective fading; minimum mean square error criterion; single carrier transmission; Channel estimation; Equalizers; Fading; Field programmable gate arrays; Frequency domain analysis; Hardware; Iterative algorithms; Mean square error methods; Peak to average power ratio; Transmitters;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2008. WiCOM '08. 4th International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4244-2107-7
Electronic_ISBN :
978-1-4244-2108-4
DOI :
10.1109/WiCom.2008.475
