Title :
Performance Analysis of DFT-OFDM, DCT-OFDM, and DWT-OFDM Systems in AWGN Channel
Author :
Gupta, Deepak ; Vats, Vipin B. ; Garg, Kamal K.
Author_Institution :
Torry Harris Bus. Solutions, Bangalore, India
fDate :
July 27 2008-Aug. 1 2008
Abstract :
In this paper, the bit error rate (BER) performance of conventional discrete Fourier transform (DFT) - OFDM system is compared with discrete wavelet transform (DWT)-OFDM system and discrete cosine transform (DCT)-OFDM system in an AWGN environment. Several wavelets such as Haar, Daubechie and Symlet are considered. We give the performance with two modulation format such as BPSK and QPSK. Simulation results show that Haar wavelet based scheme yields the lowest average bit error probability and the performance of DFT-OFDM and DWT (Haar)-OFDM with QPSK is better than BPSK modulation format.
Keywords :
AWGN channels; OFDM modulation; discrete Fourier transforms; discrete cosine transforms; discrete wavelet transforms; error statistics; quadrature phase shift keying; AWGN channel; BER; BPSK; DCT-OFDM; DFT-OFDM; DWT-OFDM; Daubechie; Haar; QPSK; Symlet; bit error rate; discrete Fourier transform; discrete cosine transform; discrete wavelet transform; AWGN channels; Binary phase shift keying; Bit error rate; Discrete Fourier transforms; Discrete wavelet transforms; Fourier transforms; Modulation; OFDM; Performance analysis; Quadrature phase shift keying; DCT; DFT; Daubechies; Haar; Symlets; wavelets;
Conference_Titel :
Wireless and Mobile Communications, 2008. ICWMC '08. The Fourth International Conference on
Conference_Location :
Athens
Print_ISBN :
978-0-7695-3274-5
Electronic_ISBN :
978-0-7695-3274-5
DOI :
10.1109/ICWMC.2008.66
