ISSN: 2375-3943
American Journal of Computation, Communication and Control  
Manuscript Information
 
 
Wireless Image Transmissions over Frequency Selective Channel Using Recent OFDMA Systems
American Journal of Computation, Communication and Control
Vol.5 , No. 1, Publication Date: Mar. 23, 2018, Page: 30-38
998 Views Since March 23, 2018, 525 Downloads Since Mar. 23, 2018
 
 
Authors
 
[1]    

Faisal Saif Al-kamali, Department of Electrical, Faculty of Engineering and Architecture, IBB University, IBB, Yemen.

[2]    

Farouk Abdu Al-fuhaidy, Department of Electrical, Faculty of Engineering and Architecture, IBB University, IBB, Yemen.

[3]    

Khaled Abdullah Al-soufy, Department of Electrical, Faculty of Engineering and Architecture, IBB University, IBB, Yemen.

 
Abstract
 

Orthogonal frequency division multiple access (OFDMA) is currently attracting much attention in recent wireless communications to meet the increasing demands arising from the explosive growth of Internet, multimedia and broadband services. In this paper, the issue of the wireless image transmission over OFDMA is investigated for different basis functions, different modulation schemes and different subcarriers mapping schemes over a frequency selective channel. Simulation results show that efficient wireless image transmission over OFDMA is possible for different basis functions. Results also show that the discrete cosine transform (DCT)-based OFDMA (DCT-OFDMA) and discrete sine transform (DST)-based OFDMA (DST-OFDMA) system provide better performance than the conventional discrete Fourier transform (DFT)-based OFDMA (DFT-OFDMA) system. It is found that the interleaved systems greatly enhance the clarity of the received image and their performances are better than that of the localized systems.


Keywords
 

Image Transmission, DST, DCT, DFT, OFDMA, PSNR, MSE


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