tailieunhanh - Báo cáo hóa học: " Software Radios: Unifying the Reconfiguration Process over Heterogeneous Platforms"

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: Software Radios: Unifying the Reconfiguration Process over Heterogeneous Platforms | EURASIP Journal on Applied Signal Processing 2005 16 2626-2640 2005 Hindawi Publishing Corporation Software Radios Unifying the Reconfiguration Process over Heterogeneous Platforms Xavier Reves Departament de Teoria del Senyal i Communications Universitat Politecnica de Catalunya 08034 Barcelona Spain Email Antoni Gelonch Departament de Teoria del Senyal i Communications Universitat Politecnica de Catalunya 08034 Barcelona Spain Email antoni@ VukMarojevic Departament de Teoria del Senyal i Communications Universitat Politecnica de Catalunya 08034 Barcelona Spain Email marojevic@ Ramon Ferrus Departament de Teoria del Senyal i Communications Universitat Politecnica de Catalunya 08034 Barcelona Spain Email ferrus@ Received 31 January 2004 Revised 21 February 2005 Future radio transceivers supporting the software radio concept will provide increased features for radio access networks. However the reconfiguration of radio equipment requires the existence of an architecture a common framework which allows the flexible management of software running on radio processors. Such a framework must take into account the heterogeneity of hardware devices and platforms for radio applications. Since the flexibility has a cost in terms of added overhead a conceptually simple but efficient structure that allows powerful mechanisms to develop and deploy software radio applications is required. This paper describes our approach the reasons that motivated it and some implementation issues. The proposed framework is essentially based on four items an abstraction layer which hides any platform-dependent issue a simple time-driven software structure a delimited interface format for software blocks which does not actually constrain communication and a global time-reference mechanism to guarantee real-time behaviour. Keywords and phrases software -defined radio reconfiguration flexible radio software abstraction layer middleware hardware