TAILIEUCHUNG - Báo cáo hóa học: " Research Article Joint Effects of Synchronization Errors of OFDM Systems in Doubly-Selective Fading Channels Wen-Long Chin1 and Sau-Gee Chen (EURASIP Member)2"

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: Research Article Joint Effects of Synchronization Errors of OFDM Systems in Doubly-Selective Fading Channels Wen-Long Chin1 and Sau-Gee Chen (EURASIP Member)2 | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2008 Article ID 840237 9 pages doi 2008 840237 Research Article Joint Effects of Synchronization Errors of OFDM Systems in Doubly-Selective Fading Channels Wen-Long Chin1 and Sau-Gee Chen EURASIP Member 2 1 Department of Engineering Science National Cheng Kung University Tainan 701 Taiwan 2 Department of Electronics Engineering and Institute of Electronics National Chiao Tung University Hsinchu 30050 Taiwan Correspondence should be addressed to Wen-Long Chin johnsonchin@ Received 26 July 2008 Revised 8 November 2008 Accepted 3 December 2008 Recommended by George Tombras The majority of existing analyses on synchronization errors consider only partial synchronization error factors. In contrast this work simultaneously analyzes joint effects of major synchronization errors including the symbol time offset STO carrier frequency offset CFO and sampling clock frequency offset SCFO of orthogonal frequency-division multiplexing OFDM systems in doubly-selective fading channels. Those errors are generally coexisting so that the combined error will seriously degrade the performance of an OFDM receiver by introducing intercarrier interference ICI and intersymbol interference ISI . To assist the design of OFDM receivers we formulate the theoretical signal-to-interference-and-noise ratio SINR due to the combined error effect. As such by knowing the required SINR of a specific application all combinations of allowable errors can be derived and cost-effective algorithms can be easily characterized. By doing so it is unnecessary to run the time-consuming Monte Carlo simulations commonly adopted by many conventional designs of synchronization algorithms in order to know those combined error effects. Copyright 2008 . Chin and . Chen. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and

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