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Báo cáo hóa học: " Prototyping Neuroadaptive Smart Antenna for 3G Wireless Communications"

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:Prototyping Neuroadaptive Smart Antenna for 3G Wireless Communications | EURASIP Journal on Applied Signal Processing 2005 7 1093-1109 2005 Hindawi Publishing Corporation Prototyping Neuroadaptive Smart Antenna for 3G Wireless Communications William To Department of Electrical and Computer Engineering The University of Auckland Private Bag 92019 Auckland New Zealand Email wto001@ctimail.com Zoran Salcic Department of Electrical and Computer Engineering The University of Auckland Private Bag 92019 Auckland New Zealand Email z.salcic@auckland.ac.nz Sing Kiong Nguang Department of Electrical and Computer Engineering The University of Auckland Private Bag 92019 Auckland New Zealand Email sk.nguang@auckland.ac.nz Received 13 April 2004 Recommended for Publication by Alexei Gorokhov This paper describes prototyping of a neuroadaptive smart antenna beamforming algorithm using hardware-software implemented RBF neural network and FPGA system-on-programmable-chip SoPC approach. The aim is to implement the adaptive beamforming unit in a combination of hardware and software by estimating its performance against the fixed real-time constraint based on IMT-2000 family of 3G cellular communication standards. Keywords and phrases RBF neural network smart antenna prototyping FPGA. 1. INTRODUCTION The widespread use of cellular communications systems is evident for the past two decades. Third-generation 3G cellular systems promising high-speed data transfer for multimedia content and improved voice communications have already been deployed in Japan by DoCoMo in the Tokyo area experimentally in June 2001 and commercially in October 2001 1 2 . Other 3G systems with different protocols under the IMT-2000 banner are currently under extensive developmental testing before their respective commercial deployments throughout the world. In the IMT-2000 family of 3G cellular communications standards the TD-SCDMA protocol from CATT explicitly requires smart antennas as a fundamental but not essential requirement 3 while CDMA2000 and WCDMA implicitly require smart .