Angle diversity with rate-adaptive transmission using repetition coding and variable silence periods for wireless infrared communications

M. Castillo-Vázquez, Antonio García-Zambrana, Antonio Puerta-Notario
January 2004
Cite URL

Abstract

In this paper, the simultaneous use of a simple rate-adaptive transmission scheme based on the use of variable silence periods and a new self-orienting receiver, alternative to conventional angle diversity techniques, is proposed in order to mitigate the effect of large variations of the signal-to-noise ratio (SNR) in indoor wireless infrared communications. In relation to the rate-adaptive transmission technique, variable silence periods are used so as to increase the peak-to-average optical power ratio (PAOPR). With regard to the new diversity technique proposed, this is based on giving self-orienting capability to the optical front-end, optimizing link quality parameters. Here, it is applied to links operating at high initial bit rates of 50, 100 and 200 Mb/s, providing a signaling rate with a wide dynamic range and a relevant improvement in performance with a gradual complexity in implementation, compared with the scheme proposed and specified in the Advanced Infrared (Air) standard by the Infrared Data Association (IrDA), which is based on repetition coding and pulse-position modulation. ©2004 IEEE.

Type
Conference paper
Publication
IEEE Vehicular Technology Conference
Bandwidth Bit-Error Rate Encoding (Symbols) Local Area Networks Optimization Pulse Position Modulation Signal to Noise Ratio Transmitters Line-of-Sight (LOS) Multiple Beam Transmitters Optical Channels Wireless Infrared Communications Carrier Communication
Antonio García-Zambrana
Antonio García-Zambrana
Professor of Telecommunications Engineering

Professor at the University of Málaga working on wireless optical communications, free-space optical links, underwater optical wireless communications, visible light communications, and FPGA/RFSoC-based real-time prototyping.

Antonio Puerta-Notario
Antonio Puerta-Notario
Emeritus Professor / Senior Researcher

Emeritus Professor at the University of Málaga with a long-standing research activity in signal theory, optical wireless communications, visible light communications, free-space optical links and communication system modelling.