A nondirective infrared transceiver for indoor high speed wireless data communication

Abstract

A prototype of the 1M bps nondirective infrared wireless transmission system was designed, and tested. System design considerations about channel property, optoelectronics devices characteristics, modulation schemes are discussed, and issues about the circuit design and the implementation are described. In this system, the pulse position modulation (PPM) with short pulse duration and the analog-multiplier type demodulator were used. The feasibility of nondirective transmission is fully demonstrated and can support successful data communication in a typical room. The system architecture can be upgraded to data rates such as 2M bps or higher by only changing circuit parameters. © 1994, IEEE.