Huang Hai-yang, Wu Gang, Fang Xiao-yin, Wu Qi, Li Shao-qian. An Adaptive Tracking Metric for Finite Feedback Precoding in MIMO Systems[J]. Journal of Electronics & Information Technology, 2009, 31(5): 1082-1085. doi: 10.3724/SP.J.1146.2008.00268
Citation:
Huang Hai-yang, Wu Gang, Fang Xiao-yin, Wu Qi, Li Shao-qian. An Adaptive Tracking Metric for Finite Feedback Precoding in MIMO Systems[J]. Journal of Electronics & Information Technology, 2009, 31(5): 1082-1085. doi: 10.3724/SP.J.1146.2008.00268
Huang Hai-yang, Wu Gang, Fang Xiao-yin, Wu Qi, Li Shao-qian. An Adaptive Tracking Metric for Finite Feedback Precoding in MIMO Systems[J]. Journal of Electronics & Information Technology, 2009, 31(5): 1082-1085. doi: 10.3724/SP.J.1146.2008.00268
Citation:
Huang Hai-yang, Wu Gang, Fang Xiao-yin, Wu Qi, Li Shao-qian. An Adaptive Tracking Metric for Finite Feedback Precoding in MIMO Systems[J]. Journal of Electronics & Information Technology, 2009, 31(5): 1082-1085. doi: 10.3724/SP.J.1146.2008.00268
This paper proposes a novel adaptive tracking metric for precoding matrices in finite feedback precoding MIMO systems with wireless correlated channels. From the statistical point of view, this metric has an optimal property to describe the relationship of channel correlation and the changes of precoding matrices. Therefore, based on keeping low amount of feedback data, this metric scheme improves further the precoding system performance. The derivation of the optimal adaptive tracking metric is given. System simulations aim at the correlations in frequency and temporal domains of wireless channels, which are combined with spatial diversity and multiplexing system structures. The theoretical analysis conclusion is verified by these results. In addition, for the lower complexity of this metric scheme, it is more valuable in practice.
Skoglund M and Jongren G. On the capacity of amultiple-antenna communication link with channel sideinformation[J].IEEE J. Select. Areas Commun.2003, 21(3):395-405[2]Vu M and Paulraj A. MIMO wireless linear precoding[J].IEEE Signal Process. Mag., 2007, 24(5): 86-105.[3]Love D J and Heath R W. Limited feedback unitaryprecoding for spatial multiplexing systems[J].IEEE Trans.on Inf. Theory.2005, 51(8):2967-2976[4]Love D J and Heath R W. Limited feedback unitaryprecoding for orthogonal space-time block codes[J].IEEETrans. on Signal Process.2005, 53(1):64-73[5]Barriac G and Madhow U. Space-time precoding for meanand covariance feedback: Application to wideband OFDM[J].IEEE Trans. on Commun.2006, 54(1):96-107[6]Lau V, Liu Y, and Chen T A. On the design of MIMOblock-fading channels with feedback-link capacity constraints[J].IEEE Trans. on Commun.2004, 52(1):62-70[7]Zhang H, Li Y, and Stolpman V, et al.. A reduced CSIfeedback approach for precoded MIMO-OFDM systems[J].IEEE Trans. on Wireless Commun.2007, 6(1):55-58[8]Khaled N, Mondal B, and Leus G, et al.. Interpolation-basedmulti-mode precoding for MIMO-OFDM systems withlimited feedback[J].IEEE Trans. on Wireless Commun.2007,6(3):1003-1013[9]Liu Yi and Zhang Hai-lin. Interpolation-based precoding withlimited feedback for MIMO-OFDM systems[J]. IETCommun., 2007, 1(4): 679-683.[10]Jafarkhani H. Space-Time Coding: Theory and Practice[M].New York, Cambridge University Press, 2005: 55-107,221-249.[11]Horn R A and Johnson C R. Matrix Analysis[M]. New York,Cambridge University Press, 2001: 289-290.