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Issue No.08 - August (2011 vol.10)
pp: 1071-1082
Young-June Choi , Ajou University, Suwon
Multiuser diversity techniques are used in multicarrier data systems to enhance downlink cell throughput. This requires downlink channel information from the users that is opportunistically used by a base station to send data to the users with good channel condition. Channel feedback from the user to the base station incurs high overhead especially when many users are in the cell and each user needs to report channel information over multiple channels, as in OFDMA systems. To reduce the quantity of feedback information without significant throughput degradation, a practical strategy is to deliver feedback on a partial set of channels with the best channel quality. We call it best feedback, and this reporting scheme carried out for best four or five among 24 channels has been already adopted in the IEEE 802.16e standard. Considering real feedback conditions, we investigate the performance of a best feedback scheme and derive the optimal number of channels for which information needs to be fed back to keep the throughput gap (compared to a full feedback scheme) within a target margin. From the optimal condition, we propose an adaptive best feedback algorithm, where the number of reported channels is adjusted to adapt to the number of users in the cell. We also propose an adjusted periodic feedback algorithm, where users are divided into groups and scheduling is carried out group by group, so a user can report feedback information when his group is scheduled, thereby reducing the frequency of feedback transmission. To support differentiated performance, we further propose heterogeneous feedback algorithms where users are divided into heterogeneous groups, each with a different group size or a different feedback period. Numerical results validate our analysis and provide meaningful insights into the design of various channel feedback schemes.
Channel feedback, channel quality indicator, multicarrier systems, IEEE 802.16e, heterogeneous feedback.
Young-June Choi, "Analysis of Best Channel Feedback and Its Adaptive Algorithms for Multicarrier Wireless Data Systems", IEEE Transactions on Mobile Computing, vol.10, no. 8, pp. 1071-1082, August 2011, doi:10.1109/TMC.2010.217
[1] D.J. Love, R.W. HeathJr., V.K.N. Lau, D. Gesbert, D. Rao, and M. Andrews, "An Overview of Limited Feedback in Wireless Communication Systems," IEEE J. Selected Areas Comm., vol. 26, no. 8, pp. 1341-1365, Oct. 2008.
[2] M. Andrews and L. Zhang, "Scheduling Algorithms for Multi-Carrier Wireless Data Systems," Proc. ACM MobiCom, Sept. 2007.
[3] IEEE 802.16e-2005, Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems Amendment for Physical and Medium Access Control Layers for Combined Fixed and Mobile Operation in Licensed Bands, IEEE, Feb. 2006.
[4] M. Johansson, "Benefits of Multiuser Diversity with Limited Feedback," Proc. IEEE Workshop Signal Processing, Advances Wireless Comm., June 2003.
[5] D. Gesbert and M.-S. Alouini, "How Much Feedback is Multi-User Diversity Really Worth," Proc. IEEE Int'l Conf. Comm., June 2004.
[6] X. Qin and R. Berry, "Opportunistic Splitting Algorithms for Wireless Networks," Proc. IEEE INFOCOM, Mar. 2004.
[7] Y. Al-Harthi, A. Tewfik, and M.-S. Alouini, "Multiuser Diversity-Enhanced Equal Access with Quantized Feedback in Multicarrier OFDM Systems," Proc. IEEE Vehicular Technology Conf., Sept. 2005.
[8] T. Tang and R.W. HeathJr., "Opportunistic Feedback for Downlink Multiuser Diversity," IEEE Comm. Letters, vol. 9, no. 10, pp. 948-950, Oct. 2005.
[9] T. Tang, R.W. HeathJr., S. Cho, and S. Yun, "Opportunistic Feedback for Multiuser MIMO Systems with Linear Receivers," IEEE Trans. Comm., vol. 55, no. 5, pp. 1020-1032, May 2007.
[10] R. Agarwal, V.R. Majjigi, Z. Han, R. Vannithamby, and J.M. Cioffi, "Low Complexity Resource Allocation with Opportunistic Feedback over Downlink OFDMA Networks," IEEE J. Selected Areas Comm., vol. 26, no. 8, pp. 1462-1472, Oct. 2008.
[11] P. Svedman, S.K. Wilson, L.J. CiminiJr., and B. Ottersten, "A Simplified Opportunistic Feedback and Scheduling Scheme for OFDM," Proc. IEEE Vehicular Technology Conf., May 2004.
[12] Z.-H. Han and Y.-H. Lee, "Opportunistic Scheduling with Partial Channel Information in OFDMA/FDD Systems," Proc. IEEE Vehicular Technology Conf., Sept. 2004.
[13] Y.-J. Choi and S. Bahk, "Partial Channel Feedback Schemes Maximizing Overall Efficiency in Wireless Networks," IEEE Trans. Wireless Comm., vol. 7, no. 4, pp. 1306-1314, Apr. 2008.
[14] Y.-J. Choi and S. Bahk, "Multichannel Wireless Scheduling under Limited Terminal Capability," IEEE Trans. Wireless Comm., vol. 7, no. 2, pp. 611-617, Feb. 2008.
[15] A. Kuhne and A. Klein, "Throughput Analysis of Multi-User OFDMA-Systems Using Imperfect CQI Feedback and Diversity Techniques," IEEE J. Selected Areas Comm., vol. 26, no. 8, pp. 1440-1450, Oct. 2008.
[16] A.G. Marques, F.F. Digham, and G.B. Giannakis, "Optimizing Power Efficiency of OFDM Using Quantized Channel State Information," IEEE J. Selected Areas Comm., vol. 24, no. 8, pp. 1581-1592, Aug. 2006.
[17] Y. Xue and T. Kaiser, "Exploiting Multiuser Diversity with Imperfect One-Bit Channel State Feedback," IEEE Trans. Vehicular Technology, vol. 56, no. 1, pp. 183-193, Jan. 2007.
[18] S. Patil and G. de Veciana, "Reducing Feedback for Opportunistic Scheduling in Wireless Systems," IEEE Trans. Wireless Comm., vol. 6, no. 12, pp. 4227-4232, Dec. 2007.
[19] P. Ding, D.J. Love, and M.D. Zoltowski, "Multiple Antenna Broadcast Channels with Shape Feedback and Limited Feedback," IEEE Trans. Signal Processing, vol. 55, no. 7, pp. 3417-3428, July 2007.
[20] J.C. Roh and B.D. Rao, "Multiple Antenna Channels with Partial Channel State Information at the Transmitter," IEEE Trans. Wireless Comm., vol. 3, no. 2, pp. 677-688, Mar. 2004.
[21] V.K.N. Lau, "Spatial-Multiplexing Phase-Sweep Transmit Diversity (SM-PSTD) for Multiantenna Base Stations with Mobile-Assisted Scheduling and Incremental Rate Feedback," IEEE Trans. Vehicular Technology, vol. 55, no. 2, pp. 490-498, Mar. 2006.
[22] M. Trivellato, F. Boccardi, and H. Huang, "On Transceiver Design and Channel Quantization for Downlink Multiuser MIMO Systems with Limited Feedback," IEEE J. Selected Areas Comm., vol. 26, no. 8, pp. 1494-1504, Oct. 2008.
[23] A. Jalali, R. Padovani, and R. Pankaj, "Data Throughput of CDMA-HDR a High Efficiency—High Data Personal Communication Wireless System," Proc. IEEE Vehicular Technology Conf., May 2000.
[24] H.A. David and H.N. Nagaraja, Order Statistics, third ed. Wiley, 2003.
[25] J.M. Steele, The Cauchy-Schwarz Master Class. Cambridge, 2004.
[26] WiMAX Forum, Mobile WiMAX—Part I: A Technical Overview and Performance Evaluation, Aug. 2006.
[27] S.H. Ali, K.-D. Lee, and V.C.M. Leung, "Dynamic Resource Allocation in OFDMA Wireless Metropolitan Area Networks," IEEE Wireless Comm., vol. 14, no. 1, pp. 6-13, Feb. 2007.
[28] W.C. Jakes, Microwave Mobile Communications. John Wiley and Sons, Feb. 1975.
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