Robust image transmission over CDMA channels

Dang, Philip P.; Chau, P.M.

doi:10.1109/30.883428

Cited by 17 publications

(7 citation statements)

References 16 publications

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“…The first contribution of this paper over that in [6][7][8][9] is that the idea of the interference cancellation is used in the proposed scheme and not used in schemes in [6][7][8][9]. The second contribution is that image transmission over a recent DST-MC-CDMA system is not studied in the literature.…”

Section: Introductionmentioning

confidence: 88%

“…The quality of the reconstructed image compared to the original transmitted image will be measured using two metrics MSE and PSNR. The MSE is defined as follow [6,8]: where M 2 is total number of pixels in the transmitted image, I o and I r are the original and the recovered images, respectively. The PSNR which is used to measure the quality of the reconstructed image at the receiver.…”

Section: Image Transmission With the Proposed Schemementioning

confidence: 99%

“…Color image transmission over MC-CDMA system was also investigated in [9]. In [6][7][8][9], the impact of the MAI is not taken into consideration. Image transmission over orthogonal frequency division multiplexing (OFDM) system has also attracted more attention in the literature [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…Image and multi-media transmission with CDMA technology has attracted the attention of several researchers [6][7][8][9]. Robust image transmission over CDMA channels was proposed and studied in [6].…”

Section: Introductionmentioning

confidence: 99%

“…Robust image transmission over CDMA channels was proposed and studied in [6]. Performance evaluation of image transmission over MC-CDMA system using two interleaving schemes was presented in [7].…”

Section: Introductionmentioning

confidence: 99%

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Efficient wireless transmission scheme based on the recent DST-MC-CDMA

Al-Junaid

Al-Kamali

2015

Wireless Netw

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The capacity of a multicarrier code-division multiple access (MC-CDMA) system is limited by a multiple access interference (MAI) from other users. In this paper, we propose a MAI cancellation scheme to transmit images over a recent discrete sine transform (DST) based MC-CDMA (DST-MC-CDMA) system. In the proposed scheme the minimum mean square error (MMSE) equalizer is used to provide the initial estimate of users' data and the parallel interference cancellation (PIC) scheme is then used to regenerate and cancel the MAI from the desired user. The proposed scheme is called MMSE-PIC. Simulation results in multi-path fading channel confirm the excellent performance of the proposed scheme as compared to MMSE equalization method. It is also found that the best suitable tentative decision for the proposed scheme is the null zone decision or the clipper decision. We also conduct experiments to show the performance of the proposed scheme with a real image transmission over the DST-MC-CDMA system. Results show that the proposed scheme provides significant image quality improvement as compared to the existing schemes. The average peak signal to noise ratio improvement achieved by the proposed scheme over the conventional MMSE equalizer at a SNR = 30 dB is about 6.5 dB for different number of users.

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