Abstract
Real-time visual applications are among the most important requirements in the next generation wireless communication systems. In these applications, the transmitted data comprise different layers with different importance levels based on their influence on the reception quality. Furthermore, the real-time transmission nature of these applications makes them sensitive to data losses and transmission delay. To address these issues, an efficient superposition adaptive modulation and coding system, for the optimal system performance, is proposed in this paper. The proposed system switches its modulation and coding scheme adaptively to select the suitable modulation order and coding rate that best match with the instantaneous channel condition. The channel state information is estimated in receiver and fed back to transmitter. In such method, better performances in both data rate and bit error rate (BER) can be attained. Here, the source data are divided into different priority layers with different importance. Each layer bit stream is sent with specific error protection level against channel corruption. The highest error protection level is assigned to the highest priority layer, and vice versa. The modulated bit streams of all layers are then superimposed together and transmitted via Rayleigh fading channel. At the receiver side, a specific multi-stage decoding receiver is used to reconstruct the source data which demodulates the layers in the order of their priorities. Simulation results show that the proposed system provides up to 18 dB SNR and 46 % data rate gains, respectively, compared to the traditional BPSK scheme at BER of 10−4.
Similar content being viewed by others
References
Benedetto, F.; Giunta, G.; Neri, A.: QoS assessment of 3G video-phone calls by tracing watermarking exploiting the new colour space ’YST’. IET Commun. 1(4), 696–704 (2007)
Xu, Y.; Zhou, Y.: H.264 video communication based refined error concealment schemes. IEEE Trans. Consumer Electron. 50(4), 1135–1141 (2004)
Sikora, T.: MPEG digital video-coding standards. IEEE Signal Proc. Mag. 14(5), 82–100 (1997)
Chai, D.; Ngan, K.N.: Automatic face location for videophone images. Proceedings of IEEE TENCON’96—Digital Signal Processing Applications, vol. 1, pp. 137–140 (1996)
Rahnavard, N.; Vellambi, B.N.; Fekri, F.: Rateless codes with unequal error protection property. IEEE Trans. Inf. Theory 53(4), 1521–1532 (2007)
Song, D.; Wen Chen, C.: Scalable H.264/AVC video transmission over MIMO wireless systems with adaptive channel selection based on partial channel information. IEEE Trans. Circuits Syst. Video Technol. 17(9), 1218–1226 (2007)
Sabir, M.F.; Bovik, A.C.; Heath, R.W.: Unequal power allocation for JPEG transmission over MIMO systems. IEEE Trans. Image Process. 19(2) (2010)
Fantacci, R.; Marabissi, D.; Tarchi, D.; Habib, I.: Adaptive modulation and coding techniques for OFDMA systems. IEEE Trans. Wirel. Commun. 8(9), 4876–4883 (2009)
Liu, Q.; Zhou, S.; Giannakis, G.B.: Queuing with adaptive modulation and coding over wireless links: cross-layer analysis and design. IEEE Trans. Wirel. Commun. 4(3), 1142–1153 (2005)
Farrokh, A.; Krishnamurthy, V.; Schober, R.: Optimal adaptive modulation and coding with switching costs. IEEE Trans. Commun. 57(3), 697–706 (2009)
Kwon, T.; Cho, D.-H.: Adaptive-modulation-and-coding-based transmission of control messages for resource allocation in mobile communication systems. IEEE Trans. Veh. Technol. 58(6), 2769–2782 (2009)
Hasan, T.Y.; Ng, C.K.; Noordin, N.K.; Ali, B.M.; Khatun, S.: Adaptive real time wireless data transmission using superposition coding with feedback of channel state information. Sci. Res. Essays 5(22), 3490–3498 (2010)
Lu, J.; Ma, M.: A cross-layer elastic CAC and holistic opportunistic scheduling for QoS support in WiMAX. Comput. Netw. 54, 1155–1168 (2010)
Wilson, S.G.: Digital Modulation and Coding. Prentice-Hall, Inc. Simon and Schuster (1996)
Cozzo C.; Hughes, B.: Joint channel estimation and data detection in space-time communications. IEEE Trans. Commun. 51(8), 1266–1270 (2003)
Trepkowski, R.: Channel Estimation Strategies for Coded MIMO Systems. M.S. thesis, Virginia Polytechnic Institute and State University, Blacksburg (2004)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Tahir, Y.H., Ng, C.K., Noordin, N.K. et al. Transmission of Visual Data over Wireless Fading Channel in Real-Time Systems Based on Superposition Coding Scheme. Arab J Sci Eng 38, 1459–1469 (2013). https://doi.org/10.1007/s13369-013-0592-3
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s13369-013-0592-3