论文信息 - Frame synchronization in UWB using multiple sync words to eliminate line frequencies

Frame synchronization in UWB using multiple sync words to eliminate line frequencies

Ultra wide-band (UWB) is now under consideration as an alternative physical layer technology for wireless PAN. UWB radio uses base-band pulses of very short duration, thereby spreading the energy of radio signal very thinly over gigahertz. The power spectral density (PSD) of UWB signals consists of a continuous component and discrete component. Generally speaking, the discrete component presents greater interference to narrow-band communication systems than the continuous component. Frame synchronization is commonly used in multiple access systems, including wireless PAN systems. The sync word will generate strong PSD. In this paper, we devise a more efficient and better performance mechanism to suppress the discrete component of the PSD of UWB signals by randomizing the pattern of UWB signals. The mechanism can also be applied to payload data to smooth the PSD of USB signals.

Alexander D. Gelman | Jay Gopal | Shaomin S. Mo

[1] G. F. Ross. The Transient Analysis of Certain TEM Mode Four-Port Networks , 1966 .

[2] G.F. Ross,et al. Time-domain electromagnetics and its applications , 1978, Proceedings of the IEEE.

[3] V. Srinivasa Somayazulu,et al. Multiple access performance in UWB systems using time hopping vs. direct sequence spreading , 2002, 2002 IEEE Wireless Communications and Networking Conference Record. WCNC 2002 (Cat. No.02TH8609).

[4] Moe Z. Win,et al. Ultra-wide bandwidth time-hopping spread-spectrum impulse radio for wireless multiple-access communications , 2000, IEEE Trans. Commun..

[5] Moe Z. Win,et al. Comparisons of analog and digital impulse radio for wireless multiple-access communications , 1997, Proceedings of ICC'97 - International Conference on Communications.

[6] Jeff Foerster,et al. Ultra-Wideband Technology for Short- or Medium-Range Wireless Communications , 2001 .

[7] Moe Z. Win,et al. Impulse radio: how it works , 1998, IEEE Communications Letters.

[8] Moe Z. Win. On the power spectral density of digital pulse streams generated by M-ary cyclostationary sequences in the presence of stationary timing jitter , 1998, IEEE Trans. Commun..

[9] Moe Z. Win,et al. Spectral density of random time-hopping spread-spectrum UWB signals with uniform timing jitter , 1999, MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341).