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: Design and Implementation of MC-CDMA Systems for Future Wireless Networks | EURASIP Journal on Applied Signal Processing 2004 10 1604-1615 2004 Hindawi Publishing Corporation Design and Implementation of MC-CDMA Systems for Future Wireless Networks Sébastien Le Nours CNRS UMRIETR Institut en Electronique et Telecommunications de Rennes INSA Rennes 20 avenue des Buttes de Coesmes 35043 Rennes Cedex France Email Fabienne Nouvel CNRS UMRIETR Institut en Electronique et Telecommunications de Rennes INSA Rennes 20 avenue des Buttes de Coesmes 35043 Rennes Cedex France Email Jean-Franẹois Helard CNRS UMRIETR Institut en Electronique et Telecommunications de Rennes INSA Rennes 20 avenue des Buttes de Coesmes 35043 Rennes Cedex France Email Received 28 February 2003 Revised 8 October 2003 The emerging need for high data rate wireless services has raised considerable interest in MC-CDMA systems. In this work we describe an MC-CDMA system design process for indoor propagation scenarios. The system specifications and simulations are firstly given and then implementation aspects on a mixed multi-DSP and FPGA architecture are presented. In order to reduce development cycle we propose the use of efficient design methodologies to improve development steps such as complexity evaluation system distribution according to the architecture and hardware-software code generation. Implementation results of the considered MC-CDMA system are then given. Keywords and phrases MC-CDMA multi-DSP-FPGA architecture codesign methodology hardware-software distribution. 1. INTRODUCTION The European third-generation 3G terrestrial mobile system under deployment aims at offering a large variety of circuit and packet services and greater capacity compared to second-generation 2G systems. The evolution from 2G to 3G corresponds to adapting a new air interface but most of all to a change of focus from voice to multimedia. Fourth generation 4G as for it will be defined by the .
