TAILIEUCHUNG - Báo cáo: Performance of Post-Demodulator Adaptive Filters for FSK Signals in a Multipath Environment

Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2011, Article ID 412036, 14 pages doi: Research Article Performance of Post-Demodulator Adaptive Filters for FSK Signals in a Multipath Environment Shu-Ting Lee,1 Sally L. Wood,1 Michael J. Ready,2 and John R. Treichler2 1 Department 2 Corporate Of Electrical Engineering, Santa Clara University, Santa Clara, CA 95053, USA Division, Applied Signal Technology, Sunnyvale, CA 94086, USA Correspondence should be addressed to Shu-Ting Lee, slee1@ Received 2 July 2010; Revised 17 October 2010; Accepted 11 December 2010 Academic Editor: Antonio Napolitano Copyright © 2011 Shu-Ting Lee et al. This is an open access article distributed. | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2011 Article ID 412036 14 pages doi 2011 412036 Research Article Performance of Post-Demodulator Adaptive Filters for FSK Signals in a Multipath Environment Shu-Ting Lee 1 Sally L. Wood 1 Michael J. Ready 2 and John R. Treichler2 1 Department Of Electrical Engineering Santa Clara University Santa Clara CA 95053 USA 2 Corporate Division Applied Signal Technology Sunnyvale CA 94086 USA Correspondence should be addressed to Shu-Ting Lee slee1@ Received 2 July 2010 Revised 17 October 2010 Accepted 11 December 2010 Academic Editor Antonio Napolitano Copyright 2011 Shu-Ting Lee et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. FSK continues to be an important component of modern communication systems and discoveries of lower impact methods for mitigating performance degradation due to multipath propagation are needed in many application areas. Previous work suggested the benefit of a simple post-demodulator LMS filter but the focus was narrow and analysis was hindered by the nonlinearity of the demodulation process and the nonstationary signal environment. This paper significantly extends understanding of the post-demodulator filter and demonstrates that the statistical assumptions that align BER performance with MSE performance do not apply in this context and that simply decreasing the MSE might increase the BER rather than decrease it. An alternative post-demodulator adaptive filter with similar complexity to the LMS filter is proposed which shows improved BER performance. Analysis provides a simplified interpretation of the interaction of system and channel model parameters which may form the basis for more general use of a post-demodulator adaptive filter. 1. Introduction Frequency shift keying FSK .

TÀI LIỆU LIÊN QUAN
TAILIEUCHUNG - Chia sẻ tài liệu không giới hạn
Địa chỉ : 444 Hoang Hoa Tham, Hanoi, Viet Nam
Website : tailieuchung.com
Email : tailieuchung20@gmail.com
Tailieuchung.com là thư viện tài liệu trực tuyến, nơi chia sẽ trao đổi hàng triệu tài liệu như luận văn đồ án, sách, giáo trình, đề thi.
Chúng tôi không chịu trách nhiệm liên quan đến các vấn đề bản quyền nội dung tài liệu được thành viên tự nguyện đăng tải lên, nếu phát hiện thấy tài liệu xấu hoặc tài liệu có bản quyền xin hãy email cho chúng tôi.
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.