Abstract
This paper presents a statistical analysis of pedestrian-induced fading for a narrowband indoor 2.45 GHz point-to-point link. A hybrid image/ray-shooting propagation simulator, capable of including the presence of moving human bodies within the environment, was used to investigate temporal fading for this channel. The traffic conditions were moderate, with 4 pedestrians moving in a regular fashion within a 150 m2 open-plan office. Analysis of a 13-s period of movement indicated that the channel was Rayleigh distributed during pedestrian-induced fading. As the channel is narrowband, the fading is flat across the transmission bandwidth and slow compared to the symbol duration. The resulting impairment in transmission quality for DPSK modulation on an AWGN channel was determined: an additional 27-dB margin is required to operate at a BER of 10-4 with respect to a non-fading AWGN channel. Frequency-selective effects were also investigated. The simulation was repeated for both faded (2.465 GHz) and un-faded (2.400 GHz) frequencies. Here the additional ray paths created by movement were capable of significantly improving the propagation conditions for the faded frequency.
| Original language | English |
|---|---|
| Pages (from-to) | 745-750 |
| Number of pages | 6 |
| Journal | IEEE Vehicular Technology Conference |
| Volume | 2 |
| Issue number | 52 ND |
| Publication status | Published - 2000 |
| Externally published | Yes |
| Event | 52nd Vehicular Technology Conference (IEEE VTS Fall VTC2000) - Boston, MA, USA Duration: 24 Sep 2000 → 28 Sep 2000 |