Transmission Characteristics of Indoor Infrared Diffuse Links Employing Three-Beam Optical Transmitters and Non-Imaging Receivers

다국어 초록 (Multilingual Abstract)

Diffuse wireless optical communication offers more robust optical links in terms of coverage and shadowing than line-of-sight links. However, traditional diffuse wireless infrared (IR) transceiver systems are more susceptible to multi-path distortion and great power decrease, which results in limiting high-speed performance. Multi-beam is an effective technique to compensate for multi-path distortion in a wireless infrared environment. The goal of this paper is to analyze the transmission characteristics by replacing traditional diffuse system (TDS) which contains single wide angle transmitter and single element receiver by system consisting of three-beam transmitter and non-imaging receiver (TNS) attached with compound parabolic concentrator (CPC). In the simulation, we use the recursive model developed by Barry and Kahn and build the scenario based on 10 different cases which have been listed in Table 1. Moreover, we also check the reliability of the TNS diffuse link channel by BER test on the basis of different receiver positions and room sizes. The simulation results not only show the basic transmission characteristics of TNS diffuse link, but also are references to design more efficient and reliable indoor infrared transmission systems.

목차 (Table of Contents)

• ABSTRACT
• Ⅰ. INTRODUCTION
• Ⅱ. INDOOR CHANNEL PROPAGATION MODEL
• Ⅲ. TRANSMISSION CHARACTERISTICS EVALUATION
• Ⅳ. CONCLUSION
• References

참고문헌 (Reference)

1 A. Mahdy, "Wireless Optical Communications: A Survey" 2399-2404, 2004

2 J. Barry, "Wireless Infrared Communications" Kluwer Academic Publishers 1994

3 Rui T. Valadas, "Indoor Optical Wireless Communication Systems" 4 (4): 1997

4 W. Welford, "High Collection Nonimaging Optics" 1989

5 Chaturi Singh, "Design Aspects of High-Performance Indoor Optical Wireless Transceivers" 14-18, 2001

6 K. -P. Ho, "Compound Parabolic Concentrators for Narrow-band Wireless Infrared Receivers" 34 : 1385-1395, 1995

7 팽천, "Channel Characteristics of Indoor Wireless Infrared Communication System Due to Different Tranceiver Conditions" 한국통신학회 33 (33): 198-203, 2008

8 M. J. McCullagh, "155Mbit/s optical wireless link using a bootstrapped silicon APD receiver" 30 (30): 430-432, 1994