A Comparison of Uwb Communication Characteristics for Various Corridors

Abstract

A comparison of ultra-wideband (UWB) communication characteristics for six different geometrical shapes is investigated. These six shapes include the straight shape corridor with rectangular cross section, the straight shape corridor with arched cross section, the curved shape corridor with rectangular cross section, the curved shape corridor with arched cross section, the L-shape corridor, and the T-shape corridor. The impulse responses of these corridors are computed by applying shooting and bouncing ray/image (SBR/Image) techniques and inverse Fourier transform. The frequency dependence utilized in the structure on the indoor channel is accounted for in the channel calculation. By using the impulse response of these multi-path channels, the mean excess delay, root mean square (RMS) delay spread, number of dominate paths (85% energy), and number of significant paths (within 10d B peak) for these six corridors could be obtained. Numerical results show that the RMS delay spreads for the arched cross section corridors are smaller than those for the rectangular cross section corridors regardless of the shapes. The RMS delay spreads for the T-shape and the L-shape corridors are greater than the other corridors. Finally, the outage probability for binary antipodal-pulse amplitude modulation (B-PAM) system has been calculated.

Key Words:

• Ultra-wideband
• corridor shape
• SBR/Image

Additional information

Notes on contributors

C.-L. Liu

Chun-Liang Liu was born in Taipei, Taiwan, Republic of China, on April 20, 1980. He is working toward his Ph.D. degree in the Department of Electrical Engineering, Tamkang University. His current research interests include wireless communication systems, ultra-wideband systems, and MIMO systems.

M.-H. Ho

Min-Hui Ho was born in Taipei, Taiwan, Republic of China, on March 30, 1983. She is working toward her Ph.D. degreeinthe Department of Electrical Engineering, Tamkang University, Tamsui, Taipei, Taiwan, ROC. Her current research interests include indoor wireless communication systems and ultra-wideband systems.

C.-C. Chiu

Chien-Ching Chiu was born in Taoyuan, Taiwan, Republic of China, in 1963. He received his B.S.C.E. degree from National Chiao Tung University, Hsinchu, Taiwan, in 1985 and his M.S.E.E. and Ph.D. degrees from National Taiwan University, Taipei, Taiwan, in 1987 and 1991, respectively. From 1987 to 1989, he served in the ROC Army Force as a communication officer. In 1992, he joined the faculty of the Department of Electrical Engineering, Tamkang University, where he is now a Professor. From 1998 to 1999, he was a Visiting Scholar at the Massachusetts Institute of Technology, Cambridge, USA and the University of Illinois at Urbana, Champaign, USA. He was a Visiting Professor at the University of Wollongong, Australia, in 2006. His current research interests include microwave imaging, numerical techniques in electromagnetics, indoor wireless communications, and ultra-wideband communication systems.

C.-Y. Chang

Chih-Yung Chang was born in Taiwan. He has received his M.S.E.E. degree from Tamkang University, Tamsui, Taipei, Taiwan, in 2006. Now, he is working in an electronic company.