Design and FPGA implementation of improved lifting scheme based DWT for OFDM systems

Author

Deepthi, H.S. ; Manure, S.S. ; Prasanna Raj, C. ; Bhusare, S.S. ; Naik, U.L.

Author_Institution

JSSATE, Bangalore, India

fYear

2011

fDate

14-15 Nov. 2011

Firstpage

184

Lastpage

187

Abstract

In this paper we present the design and FPGA implementation of improved Lifting Scheme based DWT for OFDM Systems. A generic Wavelet based DWT-OFDM for wireless communication is modeled in Simulink for various modulation schemes and wavelets, and analyzed for its BER performances and functionality and compared with Fourier based OFDM (FFT-OFDM) under AWGN Channel. For FPGA implementation of DWT-OFDM. Lifting Scheme architecture is used. Lifting based DWT architecture is better than convolution based DWT architecture in terms of area, power and speed performances. The proposed architecture is modelled using Verilog HDL and verified for its functionality in ModelSim and implemented targeting Virtex-5 FPGA development kit. The estimated frequency of operation of the design is 69.789 MHz, area is 20% of total available area and total power of 1.87907W.

Keywords

AWGN channels; Fourier transforms; OFDM modulation; error statistics; field programmable gate arrays; hardware description languages; radiocommunication; wavelet transforms; AWGN Channel; BER; DWT system; Fourier transform; OFDM systems; Simulink; Verilog HDL; Virtex-5 FPGA development kit; generic wavelet transform; lifting scheme; modulation schemes; wireless communication; AWGN; BER; DWT; FFT; FPGA; OFDM; Simulink; Wireless communication;

fLanguage

English

Publisher

iet

Conference_Titel

Advances in Recent Technologies in Communication and Computing (ARTCom 2011), 3rd International Conference on

Conference_Location

Bangalore

Type

conf

DOI

10.1049/ic.2011.0076

Filename

6193565