一种新的MIMO系统空间相关性的估计技术
doi: 10.3724/SP.J.1146.2006.01411
A Novel Spatial Correlation Estimation Technology in MIMO Communication System
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摘要: 该文提出了在MIMO系统中一种估计发射及接收天线相关矩阵RT,RR的新算法。算法揭示了对于发射端(接收端)相关矩阵的估计精度和接收端(发射端)的天线的相关度密切有关，而与发射端(接收端)自身天线的相关度无关。此外，该文对估计性能与天线数量的关系也进行了分析。模拟结果表明，在使用约200个训练符号时，相关矩阵中每个元素的平均估计误差在0.05以下，而使用更多的训练符号时，估计精度将会进一步提高。Abstract: A novel algorithm is proposed in this literature to estimate the transmit and receive antenna correlation matrix, RT and RR, in MIMO system. Theoretical analysis indicates that the estimation performance is improved when more training number is used. Interestingly, the performance of the estimation of antenna correlation matrix at one side is highly correlated to the correlation degree of the antennas at the other side, but not the correlation degree of itself. Moreover, the relationship between estimation performance and antenna numbers is also presented. Simulation results show that mean error of this algorithm is generally below 0.05 when 200 training symbols are used.
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Telatar E. Capacity of multi-antenna gaussian channels.Tech. Memo., ATT Bell Laboratories, 1995.[2]Chen-Nee C, Tse D N C, and Kahn J M, et al.. Capacityscaling in MIMO wireless systems under correlated fading[J].IEEE Trans. on Information Theory.2002, 48(3):637-650[3]Clerckx B, Vandendorpe L, and Vanhoenacker-Janvier D, etal.. Optimization of nonlinear signal constellations forreal-world MIMO channels[J].IEEE Transa. on SignalProcessing.2004, 52(4):894-902[4]Jorswieck E A and Boche H. Channel capacity andcapacity-range of beamforming in MIMO wireless systemsunder correlated fading with covariance feedback[J].IEEETrans. on Wireless Communications.2004, 3(5):1543-1553[5]Yen-Chih C and Su Y T, MIMO channel estimation inspatially correlated environments, 15th IEEE InternationalSymposium on Personal, Indoor and Mobile RadioCommunications, 2004, 1(1): 498-502.[6]Boche H and Jorswieck E A. On the ergodic capacity as afunction of the correlation properties in systems withmultiple transmit antennas without CSI at the transmitter[J].IEEE Trans. on Communications.2004, 52(10):1654-1657 -
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