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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: A Multiple-Antenna System for ISM-Band Transmission | EURASIP Journal on Applied Signal Processing 2004 9 1407-1419 2004 Hindawi Publishing Corporation A Multiple-Antenna System for ISM-Band Transmission J. Rinas Department of Communications Engineering University of Bremen 28359 Bremen Germany Email rinas@ant.uni-bremen.de R. Seeger Department of Communications Engineering University of Bremen 28359 Bremen Germany Email seeger@ant.uni-bremen.de L. Brotje Department of Communications Engineering University of Bremen 28359 Bremen Germany Email broetje@ant.uni-bremen.de S. Vogeler Department of Communications Engineering University of Bremen 28359 Bremen Germany Email vogeler@ant.uni-bremen.de T. Haase Department of Communications Engineering University of Bremen 28359 Bremen Germany Email haase@zarm.uni-bremen.de K. -D. Kammeyer Department of Communications Engineering University of Bremen 28359 Bremen Germany Email kammeyer@ant.uni-bremen.de Received 23 June 2003 Revised 19 December 2003 We present a multiple antenna system for industrial scientific and medical ISM -band transmission MASI . The hardware demonstrator was developed and realized at our institute. It enables multiple-input multiple-output MIMO -communication applications and is capable of transmiting arbitrary signals using 8 transmit and 8 receive antennas in parallel. It operates in the 2.4 GHz ISM-band. The hardware concept is introduced and some design specifications are discussed. Using this transmission system we present some measurement results to show the feasibility of MIMO concepts currently under discussion. The applications include transmit and receive diversity for single carrier and OFDM as well as blind source separation BSS techniques. Keywords and phrases hardware demonstrator MIMO OFDM Alamouti blind source separation. 1. INTRODUCTION One impetus to build a MIMO hardware demonstrator is that the assumptions made about real channels may be incorrect and the behavior of MIMO systems should be investigated under realistic conditions. .