超寬帶通信的正交正弦相關(guān)接收方法
基金項(xiàng)目:
國家自然科學(xué)基金重大項(xiàng)目(60496314)資助課題
Orthogonal Sinusoidal Correlation Receiver in UWB Communication
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摘要: 超寬帶通信中，實(shí)現(xiàn)窄于1ns的脈沖信號的準(zhǔn)確接收是個(gè)很大的挑戰(zhàn)。目前很多文獻(xiàn)都是采用匹配濾波器的方法進(jìn)行接收，并在此基礎(chǔ)上分析性能。但由于匹配濾波器輸出的相關(guān)峰的寬度太窄，因而系統(tǒng)對定時(shí)抖動(dòng)較為敏感。定時(shí)偏差較大時(shí)，接收性能將急劇下降。而且對各路隨機(jī)定時(shí)的多徑信號進(jìn)行相關(guān)接收也是一個(gè)很大的難題。該文提出一種新的超寬帶脈沖接收方法，該方法允許較大的定時(shí)偏差，并且能夠提供多路隨機(jī)定時(shí)的相關(guān)模板，同時(shí)接收信噪比的損失被控制在一個(gè)可接受的水平。
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關(guān)鍵詞:
- UWB;正交正弦相關(guān);定時(shí)誤差;信噪比
Abstract: It is a great challenge in UWB communication systems to receive the subnanosecond pulses properly. Most literatures analyzed the performance of UWB systems based on match filter receiver. But the system performance will degrade greatly when there is big timing error. And the match filter receiver can hardly provide several correlation templates with different timings. In this paper, a novel method to receive the subnanosecond pulses is proposed. This method is tolerant against timing error, and can provide correlation templates with different timings. In addition, the performance degradation of this receiver is acceptable. -
[1] Revision of Part 15 of the Commissions Rules Regarding Ultra-Wide-band Transmission. Federal Communications Commission, 1st Rep. And Order, 2002. [2] 沈鳳麟, 等. 信號統(tǒng)計(jì)分析基礎(chǔ). 合肥: 中國科學(xué)技術(shù)大學(xué)出版社, 1989, 第六章. [3] Win M Z, Scholtz R A. Ultra-wide bandwidth time-hopping spread-spectrum impulse radio for wireless multiple-access communications. IEEE Trans. on Comm., 2000, COM-48(4): 679-691. [4] Lovelace W M, Townsend J K. The effects of timing jitter and tracking on the performance of impulse radio[J].IEEE Journal on Selected Areas in Communications.2002, 20(9):1646-1651 [5] Tian Zhi, Giannakis G B. BER sensitivity to mis-timing in correlation-based UWB receivers. GLOBECOM 2003, San Francisco, USA, Dec. 2003, vol.1: 441-445. [6] Forgac J, Farkas P. Analysis of different UWB systems with timing jitter and ISI in AWGN channel. SympoTIC 2003, Bratislava, Slovakia, Oct. 2003: 51-54. [7] Guvenc I, Arslan H. Performance evaluation of UWB systems in the presence of timing jitter. IEEE Conference on Ultra Wideband Systems and Technologies, Reston, USA, Nov. 2003: 136-141. [8] Lee Sangyoub. Design and analysis of ultra-wide bandwidth impulse radio receiver. [Ph.D Thesis]. University of South California, 2002: 28-37. [9] Klein A G, Johnson Jr C R. MMSE decision feedback equalization of pulse position modulated signals. IEEE Conference on Communications, Paris, France, Jun. 2004: 2648-2652. [10] Zhao Shiwei, Liu Huaping, Tian Zhi. A decision-feedback autocorrelation receiver for pulsed ultra-wideband systems. IEEE Radio and Wireless Conference, Atlanta, USA, Sept. 2004: 251-254. [11] Han Seungyoup, Woo Choong Chae, Hong Daesik. UWB interference cancellation receiver in dense multipath fading channel. IEEE Vehicular Technology Conferences, Milan, Italy, May 2004: 1233-1236. -
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