… of the underground (UG) channel characteristics. In this paper, an UG channelimpulse response is modeled and … Irmak, “Pulses in the sand: Impulseresponseanalysis of wireless …
A Salam, U Raza, A Salam, U Raza - … in Internet of Underground Things, 2020 - Springer
… channel sounding and multipath characteristics analysis is discussed. Moreover, novel time-domain impulseresponse … To that end, soil having sand content from 13% to 86% and clay …
Y Zhong, JJ Tao - Journal of Rock Mechanics and Geotechnical …, 2022 - Elsevier
… channel is more robust to the underground environment than the … More layers of sand were then poured and tamped until the … generated pulse has a relatively large amplitude, the pulse …
… Brutsaert’s [34] theory explains acoustic pulse transmission for granular and unconsolidated … Determination of attenuation and geometric damping on clayey sand residual soil in …
A Salam, U Raza, A Salam, U Raza - … in Internet of Underground Things, 2020 - Springer
… of wireless UG channelimpulseresponse … pulse waveform in the range of 0.5 GHz–1.5 GHz. It also calculates soil permittivity with transmission and reflection simulations in dry sand. …
… We also highlight the key propagation characteristics of the RF channel in underground … are affected as the ratio of sand, clay, and water volume fraction changes. As the sand, clay, and …
… on the idea of transmitting information bits spread over very short pulses in a time-hopping pattern. … Pulses in the sand: impulseresponseanalysis of wirelessundergroundchannel …
A Salam, U Raza, A Salam, U Raza - … in Internet of Underground Things, 2020 - Springer
… channelimpulseresponse to analyze the impact of RMS delay on conventional modulation techniques, ie, pulse-… The impulseresponse of UG channel is expressed as sum of all these …
… , mud-pulse telemetry and wired solutions for the underground … characteristic of wireless UG channelimpulseresponse such … and reflection simulations in dry sand. The well-explained …