Name
Title | ||
|---|---|---|
Characterizing the Spectral Properties and Time Variation of the In-Vehicle Wireless Communication Channel |
Abstract | ||
|---|---|---|
To deploy effective communication systems in vehicle cavities, it is critical to understand the time variation of the in-vehicle channel. Initially, rapid channel variation is addressed, which is characterized in the frequency domain as a Doppler spread. It is then shown that, for typical Doppler spreads, the in-vehicle channel is underspread, and therefore, the information capacity approaches the capacity achieved with perfect receiver channel state information in the infinite bandwidth limit. Measurements are performed for a number of channel variation scenarios (e.g., absorptive motion, reflective motion, one antenna moving, and both antennas moving) at a number of carrier frequencies and for a number of cavity loading scenarios. It is found that the Doppler spread increases with carrier frequency; however, the type of channel variation and loading appear to have little effect. Channel variation over a longer time period is also measured to characterize the slower channel variation. Channel variation is a function of the cavity occupant motion, which is difficult to model theoretically; therefore, an empirical model for the slow channel variation is proposed, which leads to an improved estimate of the channel state. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1109/TCOMM.2014.2328635 | Communications, IEEE Transactions |
Keywords | Field | DocType |
mobile radio,radio receivers,wireless channels,Doppler spread,carrier frequencies,channel variation,communication systems,information capacity,invehicle wireless communication channel,receiver channel state information,spectral properties,time variation,vehicle cavities,Doppler spread,Vehicle cavities,auto-regressive model,electromagnetic cavities,information capacity,reverberation chambers,time correlation,underspread channels | Frequency domain,Autoregressive model,Wireless,Computer science,Electromagnetics,Communication channel,Communications system,Electronic engineering,Doppler effect,Channel state information | Journal |
Volume | Issue | ISSN |
62 | 7 | 0090-6778 |
Citations | PageRank | References |
4 | 0.41 | 6 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Steven Herbert | 1 | 4 | 1.09 |
| Ian J. Wassell | 2 | 288 | 35.10 |
| Tian Hong Loh | 3 | 11 | 3.63 |
| Jonathan Rigelsford | 4 | 4 | 0.41 |