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: Measurement-Based Performance Evaluation of Advanced MIMO Transceiver Designs | EURASIP Journal on Applied Signal Processing 2005 11 1712-1724 2005 Uwe Trautwein et al. Measurement-Based Performance Evaluation of Advanced MIMO Transceiver Designs Uwe Trautwein MEDAV GmbH Grafenberger Strasse 32-34 91080 Uttenreuth Germany TeWiSoft GmbH Ehrenbergstrasse 11 98693 Ilmenau Germany Email Christian Schneider Institute of Communications and Measurement Engineering Ilmenau University of Technology 98684 Ilmenau Germany Email Reiner Thoma Institute of Communications and Measurement Engineering Ilmenau University of Technology 98684 Ilmenau Germany Email Received 29 February 2004 Revised 14 January 2005 This paper describes the methodology and the results of performance investigations on a multiple-input multiple-output MIMO transceiver scheme for frequency-selective radio channels. The method relies on offline simulations and employs real-time MIMO channel sounder measurement data to ensure a realistic channel modeling. Thus it can be classified in between the performance evaluation using some predefined channel models and the evaluation of a prototype hardware in field experiments. New aspects for the simulation setup are discussed which are frequently ignored when using simpler model-based evaluations. Example simulations are provided for an iterative turbo MIMO equalizer concept. The dependency of the achievable bit error rate performance on the propagation characteristics and on the variation in some system design parameters is shown whereas the antenna constellation is of particular concern for MIMO systems. Although in many of the considered constellations turbo MIMO equalization appears feasible in real field scenarios there exist cases with poor performance as well indicating that in practical applications link adaptation of the transmitter and receiver processing to the environment is necessary. Keywords and phrases MIMO systems channel modeling channel .
