tailieunhanh - Báo cáo hóa học: " Research Article Spatial-Temporal Correlation Properties of the 3GPP Spatial Channel Model and the Kronecker MIMO Channel Model"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Spatial-Temporal Correlation Properties of the 3GPP Spatial Channel Model and the Kronecker MIMO Channel Model | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2007 Article ID 39871 9 pages doi 2007 39871 Research Article Spatial-Temporal Correlation Properties of the 3GPP Spatial Channel Model and the Kronecker MIMO Channel Model Cheng-Xiang Wang 1 Xuemin Hong 1 HanguangWu 2 and Wen Xu2 1 Joint Research Institute in Signal and Image Processing School of Engineering and Physical Sciences Heriot-Watt University Edinburgh EH14 4AS UK 2 Baseband Algorithms and Standardization Laboratory BenQ Mobile 81667 Munich Germany Received 1 April 2006 Revised 28 November 2006 Accepted 3 December 2006 Recommended by Thushara Abhayapala The performance of multiple-input multiple-output MIMO systems is greatly influenced by the spatial-temporal correlation properties of the underlying MIMO channels. This paper investigates the spatial-temporal correlation characteristics of the spatial channel model SCM in the Third Generation Partnership Project 3GPP and the Kronecker-based stochastic model KBSM at three levels namely the cluster level link level and system level. The KBSM has both the spatial separability and spatial-temporal separability at all the three levels. The spatial-temporal separability is observed for the SCM only at the system level but not at the cluster and link levels. The SCM shows the spatial separability at the link and system levels but not at the cluster level since its spatial correlation is related to the joint distribution of the angle of arrival AoA and angle of departure AoD . The KBSM with the Gaussian-shaped power azimuth spectrum PAS is found to fit best the 3GPP SCM in terms of the spatial correlations. Despite its simplicity and analytical tractability the KBSM is restricted to model only the average spatial-temporal behavior of MIMO channels. The SCM provides more insights of the variations of different MIMO channel realizations but the implementation complexity is relatively high. Copyright 2007 .