Browse > Article

High SNR Analysis of User-Multiplexing Technique Provisioning Delay QoS in OFDMA Systems  

Ahn, Seong-Woo (Dept. of Electrical and Electronic Engin., Yonsei University)
Hong, Dae-Sik (Dept. of Electrical and Electronic Engin., Yonsei University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.48, no.4, 2011 , pp. 77-83 More about this Journal
Abstract
In this paper, we study the throughput-delay tradeoff of OFDMA systems in context of 2-dimensional resource allocation, and analyze the effect of frequency diversity and user-multiplexing in time domain that has on delay QoS performance. Based on the analysis results, we investigate the impacts of delay QoS on spectral efficiency. In high SNR regime, the optimal DoM (degree of multiplexing) maximizing the spectral efficiency is identified. The results of the high SNR analysis can give us an intuition on an efficient resource allocation policy. Finally, through the simulation results, we verify that our approach with its optimal DoM yields substantial capacity gain.
Keywords
OFDMA; high SNR; user-multiplexing; QoS; effective capacity;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 P.Bender, P.Black, M.Grob, et al., "CDMA/HDR: A Bandwidth Efficient High Speed Data Service for Nomadic Users," IEEE Commun. Mag.,vol. 38, pp. 70-77, July 2000.
2 김영주, 송형준, 권동영, 홍대식, "OFDMA 시스템에서 전송률 향상을 위한 충돌 회피 스케줄링" 대한전자공학회, 전자공학회논문지, 제45권 TC편, 제 11호, (통권 제377호) 9-14쪽, 2008년 11월.
3 J. Jang and K.B. Lee, "Transmit Power Adaptation for Multiuser OFDM Systems," IEEE J. Select. Areas Commun., vol. 21, p. 171.178, Feb 2003.
4 T.D. Nguyen and Y. Han, "A Proportional Fairness Algorithm with QoS Provision in Downlink OFDMA Systems," IEEE Commun. Letters, vol. 10, pp. 210-212, Nov 2006.   DOI   ScienceOn
5 R. S. A. Eryilmaz and J. Perkins, "Stable scheduling policies for fading wireless channels," In Proceedings of ISIT, 2003.
6 S. Ahn, S. Lee, K. Kim and D. Hong, "Analysis of Proportional Fair Scheduling in OFDMA Systems with Delay QoS Constraints," APCC 2010.
7 S. Verdu, "Spectral efficiency in the wideband regime," IEEE Trans. Information Theory., vol. 48, no. 6, pp. 1319-1343, Jun. 2002.
8 D. Wu and R. Negi, "Effective capacity: a wireless link model for support of quality of service," IEEE Trans. Wireless Commun., vol. 2, no. 4, pp. 630-643, July 2003.
9 M.Ergen, S.Coleri and P.Varaiya, "QoS Aware Adaptive Resource Allocation Techniques for Fair Scheduling in OFDMA Based Broadband Wireless Access Systems," IEEE Trans. Broadcast., vol. 49, pp. 362-370, Dec 2003.   DOI   ScienceOn
10 C.-S. Chang, "Stability, Queue Length, and Delay of Deterministic and Stochastic Queueing Networks," IEEE Trans. Autom. Control, vol. 39, no. 5, pp. 913-931, May 1994.   DOI   ScienceOn
11 L. Yang and M.-S. Alouini, "Performance Analysis of Multiuser Selection Diversity," IEEE Trans. Veh. Technol., vol. 55, pp. 1003-1018, May 2006.
12 David, H. A., Nagaraja, H. N, Order Statistics (3rd Edition). Wiley, New Jersey pp 458, 2003.
13 S. W. Ahn, H. Wang, S. Han, and D. Hong, "The Effect of Multiplexing Users in QoS Provisioning Scheduling," IEEE Trans. Veh. Technol., vol. 59, no. 5, pp. 2575-2581, Jun 2010.
14 S. S. (Shitz) and S. Verd, "The impact of frequency-flat fading on the spectral efficiency of CDMA," IEEE Trans. Information Theory., vol. 47, no. 4, pp. 1302-1327, May 2001.   DOI   ScienceOn