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More and More efforts have been made concerning the GNSS Reflectometry (GNSS-R) technique since GPS signals being found to be sensitive to geophysical properties, i.e., ocean surface roughness and soil moisture. Compared to airborne observations, ground-based research could focus on the models using the reflected GNSS signal, regardless of the atmospheric attenuation and the reflection zone's movement...
Buffered crossbar switches are special crossbar switches with an exclusive buffer at each crosspoint. They demonstrate unique advantages over traditional unbuffered crossbar switches, such as asynchronous scheduling and variable length packet handling. However, since crosspoint buffers are expensive on-chip memories, it is desired that each crosspoint has only a small buffer. In this paper, we propose...
A parallel packet switch (PPS) provides huge aggregate bandwidth by combining the capacities of multiple switching fabrics. Most existing PPSs use output queued switches as the switching fabrics, which require speedup and result in high implementation cost. In this paper, we present a buffered crossbar based parallel packet switch (BCB- PPS), whose switching fabrics need no speedup. We propose the...
Location based services (LBS) is regarded as a key feature of many future mobile applications. GPS serves well for most outdoor applications; however, its dependence on satellites makes it ineffective in indoor environments. The essential elements to LBS have been a two-way wireless data communications link plus navigation data inputs to permit a screened flow of information from LBS data servers...
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