Subcarrier Gain Based Power Allocation in Multicarrier Systems

• Autorzy: Abd-Elnaby M. , Sedhom G. G. , Messiha N. W. , Abd El-Samie F. E. , Zhu X.
• Języki publikacji: EN

Abstrakty

EN

The Orthogonal Frequency Division Multiplexing (OFDM) transmission is the optimum version of the multicarrier transmission scheme, which has the capability to achieve high data rate. The key issue of OFDMsystem is the allocation of bits and power over a number of subcarriers. In this paper, a new power allocation algorithm based on subcarrier gain is proposed to maximize the bit rate. For OFDM systems, the Subcarrier Gain Based Power Allocation (SGPA) algorithm is addressed and compared with the standard Greedy Power Allocation (GPA). The authors demonstrate by analysis and simulation that the proposed algorithm reduces the computational complexity and achieves a near optimal performance in maximizing the bit rate over a number of subcarrier.

Słowa kluczowe

EN

GPA; OFDM; QAM; SNR

• Wydawca: Instytut Łączności - Państwowy Instytut Badawczy
• Czasopismo: Journal of Telecommunications and Information Technology
• Rocznik: 2014
• Tom: nr 1
• Strony: 62--67
• Opis fizyczny: Bibliogr. 19 poz., rys., tab.

Twórcy

autor

Abd-Elnaby M.

• Faculty of Electronic Engineering, Menoufia University, Menouf, Egypt

autor

Sedhom G. G.

• Faculty of Electronic Engineering, Menoufia University, Menouf, Egypt

autor

Messiha N. W.

• Faculty of Electronic Engineering, Menoufia University, Menouf, Egypt

autor

Abd El-Samie F. E.

• Faculty of Electronic Engineering, Menoufia University, Menouf, Egypt

autor

Zhu X.

• Department of Electrical Engineering and Electronics, The University of Liverpool, Liverpool, UK

Bibliografia

• [1] A. Falahati and M.-R. Ardestani, “Adaptive subcarrier assignment and power distribution in multiuser OFDM systems with proportional data rate requirement”, Iranian J. Electrical & Electronic Engin., vol. 4, no. 1 & 2, pp. 10–16, 2008.
• [2] T. M. Cover and J. A. Thomas, Elements of Information Theory. Wiley, 2006.
• [3] H. Al-Shatri and T. Weber, “Fair power allocation for sum-rate maximization in multiuser OFDMA”, in Proc. Int. ITG Worksh. Smart Antennas WSA 2010, Bremen, Germany, 2010, pp. 350–354.
• [4] H. Yin and H. Liu, “An efficient multiuser loading algorithm for OFDM-based broadband wireless systems”, in Proc. IEEE Global Telecommun. Conf. GLOBECOM 2000, San Francisco, CA, USA, 2000, vol. 1, pp. 103–107.
• [5] W. Rhee and J. M. Cioffi, “Increase in capacity of multiuser ofdm system using dynamic subchannel allocation”, in Proc. 51st IEEE Vehicular Technol. Conf. VTC 2000-Spring, Tokyo, Japan, pp. 1085-1089, 2000.
• [6] S. W. Ko, and S. L. Kim, “Block waterfilling with power borrowing for multicarrier communications”, in Proc. 68th IEEE Vehicular Technol. Conf., Calgary, Canada, 2008, pp. 1–5.
• [7] H. W. Lee and S. Chong, “Downlink resource allocation in multicarrier systems: Frequency-selective vs. equal power allocation”, IEEE Trans. Wirel. Commun., vol. 7, no. 10, pp. 3738–3747, 2008.
• [8] E. Bedeer, O. A. Dobre, M. H. Ahmed, and K. E. Baddour, “Joint optimization of bit and power allocation for multicarrier systems with average BER constraint”, in Proc. 76th IEEE Vehicular Technol. Conf. VTC Fall 2012, Quebec, Canada, 2012.
• [9] S. Gortzen and A. Schmeink, “Optimality of dual methods for discrete multiuser multicarrier resource allocation problems”, IEEE Trans. Wirel. Commun., vol. 11, no. 10, pp. 3810–3817, 2012.
• [10] M. Bohge and J. Gross, “Dynamic resource allocation in OFDM systems: an overview of cross-layer optimization principles and technique”, Network, IEEE, vol. 21 no. 1, pp. 53–59, 2007.
• [11] W. Al-Hanafy, M. N. Hussin, and S. Weiss, “Incremental rate maximization power loading with BER improvements”, in Proc. 18th Eur. Sig. Proces. Conf. EUSIPCO 2010, Aalborg, Denmark, 2010, pp. 382–386.
• [12] A. Goldsmith, Wireless Comunication. Cambridge University Press, 2005.
• [13] W. Al-Hanafy and S.Weiss, ”Reduced complexity schemes to greedy power allocation for multicarrier systems”, in Proc. 18th Int. Conf. Microw. Radar Wirel. commun. MIKON 2010, Vilnius, Lithuania, 2010, pp. 1–4.
• [14] N. A. Odhah, M. I. Dessouky, W. AI-Hanafy, and F. E. Abd EI-Samie, “An improved adaptive transmission scheme for high speed communication systems”, in Proc. Int. Computer Engin. Conf. ICENCO 2010, Giza, Egypt, 2010, pp. 29–33.
• [15] N. A. Odhah, M. I. Dessouky, W. AI-Hanafy, and F. E. Abd EI-Samie, “Low complexity precoded greedy power allocation algorithm for OFDM communication systems”, J. Sig. Inform. Proces., vol. 3, no. 2, pp. 185–191, 2012.
• [16] N. A. Odhah, M. I. Dessouky, W. AI-Hanafy, and F. E. Abd EI-Samie, “Low complexity greedy power allocation algorithm for proportional resource allocation in multi-user OFDM systems”, J. Telecommun. Inform. Technol., no. 4, pp. 38–45, 2012.
• [17] J. Campello, “Optimal Discrete Bit Loading for Multicarrier Modulation Systems”, in Proc. IEEE Int. Symp. Inform. Theory, Cambridge, MA, USA, 1998, p. 193.
• [18] J. Campello, “Practical bit loading for DMT”, in Proc. IEEE Int. Conf. Commun. ICC’99, Vancouver, Canada, 1999, vol. 2, pp. 801–805.
• [19] N. Papandreou and T. Antonakopoulos, “Bit and power allocation in constrained multicarrier systems: the single-user case”, EURASIP J. Adv. Sig. Proces., vol. 2008, pp. 1–14, 2008.