Browse > Article
http://dx.doi.org/10.5515/KJKIEES.2010.21.3.229

Subcarrier Allocation Algorithm with Simple CSI for Multiuser OFDM System  

Yang, Jun-Seok (Wireless Solution R&D Group, Samsung Electro-Mechanics Co., Ltd.)
Park, Sang-Kyu (Department of Electronics and Computer Engineering, Hanyang University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.21, no.3, 2010 , pp. 229-235 More about this Journal
Abstract
The Orthogonal Frequency Division Multiplexing(OFDM) has been strongly recommended as a transmission technique in order to satisfy requests of high speed and high quality multimedia information. This paper considers resource allocation algorithm which supports the user Quality of Service(QoS) for multi-user OFDM system with simple CSI (Channel State Information) structure. After users eligible for services and the number of subcarrier are determined by minimum request data rate and average channel gain, subcarriers are allocated to increase total transmission rates. Although ideal CSI is not reported to base station, compared to conventional algorithm, we have obtained better result with simple CSI structure.
Keywords
Multi-user OFDM System; Simple CSI; Resource Allocation; Subcarrier Allocation;
Citations & Related Records
연도 인용수 순위
  • Reference
1 H. Cheon, B. Park, and D. Hong, "Adaptive multicarrier system with reduced feedback information in wideband radio channels", in Proc. IEEE Veh. Technol. Conf., vol. 5, pp. 2880-2884, Sep. 1997.   DOI
2 R. Prasad, OFDM for Wireless Communications Systems, Artech House, 2004.
3 Wireless LAN Medium Access Control(MAC) and Physical Layer(PHY) Speciation, IEEE Std. 802.11, 1997.
4 I. Koffman, V. Roman, "Broadband wireless access solutions based on OFDM access in IEEE802.16", IEEE Commun. Mag., vol. 40, pp. 96-103, Apr. 2002.   DOI
5 C. Dubuc, D. Starks, T. Creasy, and Y. Hou, "A MIMO-OFDM prototype for next-generation wireless WANs", IEEE Commun. Mag., vol. 42, pp. 82-87, Dec. 2004.   DOI
6 H. Rohling, K. Bruninghaus, and R. Grunheid, "Comparison of multiple access schemes for an OFDM downlink system", in Proc. IEEE Vehicular Technology Conf.(VTC'96), pp. 23-30, May 1997.
7 C. Y. Wong, R. S. Cheng, K. B. Letaief, and R. D. Murch, "Multiuser OFDM with adaptive subcarrier, bit and power allocation", IEEE J. Select. Areas Commun., vol. 17, pp. 1747-1757, Oct. 1999.   DOI
8 D. Kivanc, G. Li, and H. Liu, "Computationally efficient bandwidth allocation and power control for OFDMA", IEEE Trans. Wireless Commun. vol. 2, no. 6, pp. 1150-1158, Nov. 2003.   DOI
9 Y. Zhang, K. Letaief, "Multiuser adaptive subcarrier- and bit allocation with adaptive cell selection for OFDM systems", IEEE Trans. Wireless Commun., vol. 3, no. 5, pp. 861-865, Sep. 2004.   DOI
10 C. Woo, E. Oh, and D. Hong, "Simple dynamic subcarrier allocation with CQI feedback reduction for OFDMA systems", IEEE Trans. on Veh. Technol., vol. 57, no. 5, pp. 3299-3303, Sep. 2008.   DOI
11 M. Mecking, "Resource allocation for fading multiple-access channels with partial channel state information", in Proc. IEEE. Conf. Commun., vol. 3, pp. 1419-1423, May 2002.   DOI