Except for the aroused challenges in synchronization, the intensive multipath propagations also greatly complicate signal detection of USCS, which makes the low-power architecture not available to realistic application [11, 12, 14].
It is no doubt that CS may provide an appealing solution to the above practical difficulties posed by channel estimations with intensive multipath propagations, by allowing sampling the signals (with a huge bandwidth) at a feasible rate significantly lesser than the Nyquist rate [15].
Radiata pine contributes approximately 2.5% to New Zealand GDP and has been subjected to intensive breeding and propagation for over 60 years.
Sound propagation over intensive and extensive green roofs was numerically studied by using the finite-difference time-domain method.
Three-dimensional culture systems can partially prevent dedifferentiation, but are labor intensive and essentially impair propagation.
However, such propagation is computationally intensive because of the high dimensionality of the multi-target state space [2, 3].
"This is intensive preparation".
At present it is mainly cultured by vegetative propagation, which is labor intensive, bulky, and requires large amounts of propagating material.
Simulation of seismic wave propagation is a memory intensive problem which involves a large amount of data transfer between the memory and the arithmetic units, while the number of arithmetic computations is relatively small.
Since the feature of received signal varies with different multipath propagation conditions, an labor-intensive on-site calibration procedure is almost indispensable to decide the optimal scenario-specific threshold for human detection.
