tailieunhanh - Báo cáo hóa học: " Real-Time Signal Processing for Multiantenna Systems: Algorithms, Optimization, and Implementation on an Experimental Test-Bed"

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: Real-Time Signal Processing for Multiantenna Systems: Algorithms, Optimization, and Implementation on an Experimental Test-Bed | Hindawi Publishing Corporation EURASIP Journal on Applied Signal Processing Volume 2006 Article ID 27573 Pages 1-21 DOI ASP 2006 27573 Real-Time Signal Processing for Multiantenna Systems Algorithms Optimization and Implementation on an Experimental Test-Bed Thomas Haustein Andreas Forck Holger Gabler Volker Jungnickel and Stefan Schiffermuller Fraunhofer Institute for Telecommunications Heinrich-Hertz-Institut Einsteinufer 37 10587 Berlin Germany Received 1 December 2004 Revised 18 July 2005 Accepted 22 July 2005 A recently realized concept of a reconfigurable hardware test-bed suitable for real-time mobile communication with multiple antennas is presented in this paper. We discuss the reasons and prerequisites for real-time capable MIMO transmission systems which may allow channel adaptive transmission to increase link stability and data throughput. We describe a concept of an efficient implementation of MIMO signal processing using FPGAs and DSPs. We focus on some basic linear and nonlinear MIMO detection and precoding algorithms and their optimization for a DSP target and a few principal steps for computational performance enhancement are outlined. An experimental verification of several real-time MIMO transmission schemes at high data rates in a typical office scenario is presented and results on the achieved BER and throughput performance are given. The different transmission schemes used either channel state information at both sides of the link or at one side only transmitter or receiver . Spectral efficiencies of more than 20bits s Hz and a throughput of more than 150 Mbps were shown with a single-carrier transmission. The experimental results clearly show the feasibility of real-time high data rate MIMO techniques with state-of-the-art hardware and that more sophisticated baseband signal processing will be an essential part of future communication systems. A discussion on implementation challenges towards future wireless communication systems .

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