DSRC CHANNEL FADINGANALYSISFROM EMPIRICALMEASUREMENT

Vehicle-to-vehicle communication research has gainedtremendous interest inrecentyearsduetoits importance infacilitating future active safety andtelematics applications. However,withlimited literature available, there islackofunderstanding formodeling mobile-to-mobile channels invehicular environments. In thispaper,we conductpreliminary channel fading statistical analysis of empirical measurement datafromdevices compatible with theemergingDedicated ShortRangeCommunications (DSRC)standard. In particular, we usetheNakagami distribution toanalyze thereceived signal strength (i.e., RSSI)fromempirical measurement, andcharacterize the fadingstatistics asa function ofdistance forvehicular operating environment. Ouranalysis reveals thatfading can beapproximated byRician distribution within 100mwhile it seemstofollow Rayleigh distribution beyond100m.The outcomeofthestudycouldbeusedforvehicular network simulation.