Ultra-wideband communication system with transmitting pulses shaped by orthogonal frequencies signals

An ultra-wideband (UWB) short range communication system is investigated in this paper. The system is based on an on-off-keying (OOK) modulation where the transmitted data pulse is obtained by using a set of orthogonal frequency (OF) signals. This optimizes the transmitted signal power and maximizes the equivalent signal-to-noise ratio (SNR) at the receiver. The receiver uses a non-coherent energy detector. The system was tested in real communication environment. The radio frequency (RF) band from 3.7 to 4.3 GHz was used. In line-of-sight (LOS) mode and at a distance of 5 m a data rate of 20 Mbit/s was achieved without forward error correction code. The motivation of this work is to provide a non-expensive, medium data rates, and low-power short-range radio communication system suitable for personal area network (PAN) applications.