Compressed image transmission over FFT-OFDM: A comparative study

Author

Al-Hinai, Noura ; Neville, Katrina ; Sadik, Amin Z. ; Hussain, Zahir M.

Author_Institution

Sch. of Electr. & Comput. Eng., RMIT Univ., Melbourne, VIC

fYear

2007

fDate

2-5 Dec. 2007

Firstpage

465

Lastpage

469

Abstract

In this work we present a comparative study for the transmission of a wavelet-compressed still image using FFT-OFDM over multipath channels with additive white Gaussian noise (AWGN). Rather than using a global threshold for the compression of the wavelet coefficients, we chose to compress the data by transmitting only the low-pass subbands from each decomposition level. 16-QAM is considered for the modulation of the data and various wavelets are considered. A comparison is also performed between the common discrete cosine transform (DCT) compression method and the DWT to compare accuracy and efficiency of data transmission using the two methods. The performance criteria for our compression methods include the compression ratio and relative root-mean-squared (RMS) error of the received data.

Keywords

AWGN channels; OFDM modulation; data compression; fast Fourier transforms; image coding; mean square error methods; multipath channels; quadrature amplitude modulation; wavelet transforms; 16-QAM; AWGN; FFT-OFDM; additive white Gaussian noise; fast Fourier transform; multipath channels; root-mean-squared error; wavelet-compressed still image transmission; AWGN; Digital video broadcasting; Discrete cosine transforms; Discrete wavelet transforms; Frequency division multiplexing; Image coding; Image communication; Intersymbol interference; Multipath channels; OFDM modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunication Networks and Applications Conference, 2007. ATNAC 2007. Australasian

Conference_Location

Christchurch

Print_ISBN

978-1-4244-1557-1

Electronic_ISBN

978-1-4244-1558-8

Type

conf

DOI

10.1109/ATNAC.2007.4665272

Filename

4665272