Transmission quality of 10 Mbits/s Ethernet data frames using DPSK in wireless indoor environment

This paper presents the transmission quality of 10 Mbits/s Ethernet data frames in wireless indoor environment by direct modulation of the data frames onto a 1.95 GHz carrier using differential phase shift keying. Rectangular patch antennas with a 3 dB beamwidth of 74° are used in both the transmitter and receiver. Outage probabilities measured in a laboratory of 15.6×16.3×2.6 meters using three different transmitter antenna heights and locations are presented. In the first experiment where the antenna height is 1.3 meters, an outage probability of around 13% is reported. This improves to 2% by re-locating the transmitter antenna height and position. A comparison with measured RMS indoor delay spread characteristics at a similar frequency is made