Progressive Image Transmission Over Wavelet Packet Based OFDM

Author

Wang, Sashuang ; Dai, Jufeng ; Hou, Chunping ; Liu, Xueqing

Author_Institution

Sch. of Electron. Inf. Eng., Tianjin Univ.

fYear

2006

fDate

38838

Firstpage

950

Lastpage

953

Abstract

In this paper, a new scheme for progressive image transmission over wavelet packet based orthogonal frequency division multiplexing (WP-OFDM) system is proposed. First, the BER performances of WP-OFDM systems with different Daubechies wavelet as orthogonal basis functions in multipath fading channel are investigated. The results show that there are error floors in the BER curves, so an equalization method is applied to eliminate the error floor. Then in the WP-OFDM system with the equalization method, a joint source channel coding (JSCC) method is introduced to give image encoder output bit streams with different perception importance unequal error protection. Simulation results confirm the effectiveness of our proposed image transmission scheme

Keywords

OFDM modulation; combined source-channel coding; fading channels; image coding; multipath channels; visual communication; BER curves; Daubechies wavelet; JSCC method; WP-OFDM systems; equalization method; image encoder output bit streams; joint source channel coding; multipath fading channel; progressive image transmission; unequal error protection; wavelet packet based orthogonal frequency division multiplexing system; Bandwidth; Bit error rate; Channel coding; Discrete wavelet transforms; Error correction codes; Fading; Image communication; Intersymbol interference; OFDM modulation; Wavelet packets; OFDM; adaptive allocation; equalization; joint source channel coding; unequal error protection; wavelet packet;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 2006. CCECE '06. Canadian Conference on

Conference_Location

Ottawa, Ont.

Print_ISBN

1-4244-0038-4

Electronic_ISBN

1-4244-0038-4

Type

conf

DOI

10.1109/CCECE.2006.277419

Filename

4054847