超宽带通信的正交正弦相关接收方法

黄嵢; 尹华锐; 卫国; 朱近康

超宽带通信的正交正弦相关接收方法

基金项目:

国家自然科学基金重大项目(60496314)资助课题

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出版历程
- 收稿日期: 2004-11-03
- 修回日期: 2005-04-25
- 刊出日期: 2006-06-19

Orthogonal Sinusoidal Correlation Receiver in UWB Communication

摘要

摘要: 超宽带通信中，实现窄于1ns的脉冲信号的准确接收是个很大的挑战。目前很多文献都是采用匹配滤波器的方法进行接收，并在此基础上分析性能。但由于匹配滤波器输出的相关峰的宽度太窄，因而系统对定时抖动较为敏感。定时偏差较大时，接收性能将急剧下降。而且对各路随机定时的多径信号进行相关接收也是一个很大的难题。该文提出一种新的超宽带脉冲接收方法，该方法允许较大的定时偏差，并且能够提供多路随机定时的相关模板，同时接收信噪比的损失被控制在一个可接受的水平。
- UWB;正交正弦相关;定时误差;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.

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参考文献(1)

[1] Revision of Part 15 of the Commissions Rules Regarding Ultra-Wide-band Transmission. Federal Communications Commission, 1st Rep. And Order, 2002. [2] 沈凤麟, 等. 信号统计分析基础. 合肥: 中国科学技术大学出版社, 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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