Abstract
This paper presents adaptive per-spatial stream power allocation algorithms for Single User Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (SU MIMO-OFDM) systems. Three efficient and low-complexity Greedy Power Allocation (GPA) algorithms are proposed to maximize the throughput and spectral efficiency of the SU MIMO-OFDM systems. Firstly, the low-complexity pre-coded GPA algorithms are developed for the MIMO systems. The spatial sub-channels are created by applying the so-called Singular Value Decomposition (SVD) technique on the MIMO channel matrix, and then the Pre-GPA algorithms are applied to exploit the multi-path and spatial diversities. Secondly, the spatial and frequency diversities are exploited by adaptively allocating the system sub-carriers to the spatial sub-channels followed by Per-Spatial GPA (PSGPA). Finally, spatial multiplexing-based GPA algorithms are proposed to optimize the spectral efficiency of the SU MIMO-OFDM system. An optimal two-dimensional Spatial-Frequency GPA (SFGPA) algorithm is proposed to efficiently improve the average system spectral efficiency. The high computational complexity of the optimal SFGPA solution is simplified by proposing a low-complexity Per-Spatial GPA with Excess Power Moving down (PSGPA-EPMd) algorithm, which moves the per-spatial excess power downwards to enhance the spectral efficiency of the spatial multiplexing-based SU MIMO-OFDM systems. The proposed algorithms achieve better spectral efficiency and maximize the throughput in comparison with conventional algorithms.
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References
Alamouti, S. M. (1998). A simple transmit diversity technique for wireless communications. IEEE Journal on Selected Areas in Communications, 16, 1451–1458.
Foschini, G. J., & Gans, M. J. (1998). On limits of wireless communications in a fading environment when using multiple antennas. Wireless Personal Communications, 6, 311–335.
Telatar, E. (1999). Capacity of multi-antenna Gaussian channels. European transactions on Telecommunications, 10, 585–595.
Andrews, J. G., Ghosh, A., & Muhamed, R. (2007). Fundamentals of WiMAX: Understanding broadband wireless networking. Upper Saddle River: Prentice Hall PTR.
Stauffer, E., & Hochwald, B. (2012). Low-complexity multi-stream space-time codes—Part I: Direct-sum codes and design criteria communications. IEEE Transactions on Communications, 60(1), 81–88.
Hochwald, B. M., & Marzetta, T. L. (2000). Unitary space-time modulation for multiple-antenna communications in Rayleigh flat fading. IEEE Transactions on Information Theory, 46, 543–564.
Paulraj, A. J., Gore, D. A., Nabar, R. U., & Bolcskei, H. (2004). An overview of MIMO communications-a key to gigabit wireless. Proceedings of the IEEE, 92, 198–218.
Choi, W., & Andrews, J. G. (2007). Downlink performance and capacity of distributed antenna systems in a multi-cell environment Wireless Communications. IEEE Transactions on Wireless Communications, 6(1), 69–73.
Foschini, G. J. (1996). Layered space time architecture for wireless communication in a fading environment when using multi-element antennas. Bell Labs Technical Journal, 1, 41–59.
Xianming, L., Xiaolin, W., Xinwei, G., Debin, Z., & Wen, G. (2012). Low bit-rate video coding via mode-dependent adaptive regression for wireless visual communications. In Proceedings of visual communications and image processing (VCIP) IEEE conference.
Bolcskei, H., Gesbert, D., & Paulraj, A. J. (2002). On the capacity of OFDM-based spatial multiplexing systems. IEEE Transactions on Communications, 50, 225–234.
Linglong, D., Zhaocheng, W., & Zhixing, Y. (2012). Time-frequency training OFDM with high spectral efficiency and reliable performance in high speed environments. IEEE Journal on Selected Areas in Communications, 30(4), 295–707.
Hu, S., Guan, Y. L., Bi, G., & Li, S. (2012). Cluster-based transform domain communication systems for high spectrum efficiency. IET Communications, 6(16), 2734–2739.
Bolcskei, H., & Paulraj, A. J. (2000). Space-frequency coded broadband OFDM systems. In Wireless communications and networking conference-2000 (WCNC-2000) IEEE, pp. 1–6.
Wyglinski, A. M., Labeau, F., & Kabal, P. (2005). Bit loading with BER-constraint for multicarrier systems. IEEE Transactions on Wireless Communications, 4, 1383–1387.
Papandreou, N., & Antonakopoulos, T. (2008). Bit and power allocation in constrained multicarrier systems: The single-user case. EURASIP Journal on Advances in Signal Processing, 2008, 11.
Zeng, L., McGrath, S., & Cano, E. (2009). Rate maximization for multiband OFDM ultra wideband systems using adaptive power and bit loading algorithm. In Fifth advanced international conference on Telecommunications-2009 (AICT’09), pp. 369–374.
Alhanafy, W., & Weiss, S. (2009). A new low-cost discrete bit loading using greedy power allocation. In The third mosharaka international conference on communications, computers and applications (MIC-CCA2009), 26–28 October, 2009.
Shin, C., Park, H., Kang, J., & Nam, E. (2010). A per-stream coded bit loading algorithm for MIMO BIC-OFDM systems. In 2010 international ITG workshop on smart antennas (WSA), pp. 240–243.
Goldsmith, A. (2005). Wireless communications. Cambridge: Cambridge University Press.
Odhah, N. A., Dessouky, M. I., Al-Hanafy, W. E., & Abd El-Samie, F. E. (2012). Low complexity precoded greedy power allocation algorithms for OFDM communication systems. Journal of Signal and Information Processing, 3, 185–191.
Odhah, N. A., Dessouky, M. I., Al-Hanafy, W. E., & Abd El-Samie, F. E. (2012). Greedy Power Allocation Algorithm for proportional resource allocation in multi-User OFDM systems. In 29th national radio science conference (NRSC’29), Cairo University, Egypt.
Odhah, N. A., Dessouky, M. I., Al-Hanafy, W. E., & Abd El-Samie, F. E. (2012). Per-spatial stream power allocation algorithms for single-user MIMO-OFDM wireless communication systems. In The 8th international conference on informatics and systems, INFOS’12, Cairo, Egypt.
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Odhah, N.A., Hassan, E.S., Dessouky, M.I. et al. Adaptive Per-spatial Stream Power Allocation Algorithms for Single-User MIMO-OFDM Systems. Wireless Pers Commun 98, 1–31 (2018). https://doi.org/10.1007/s11277-017-4186-3
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DOI: https://doi.org/10.1007/s11277-017-4186-3