LoRa Base-Station-to-Body Communication With SIMO Front-to-Back Diversity

LoRa Mobile-To-Base-Station Channel Characterization in the Antarctic

Antarctic conditions demand that wireless sensor nodes are operational all year round and that they provide a large communication range of several tens of kilometers. LoRa technology operating in sub-GHz frequency bands implements these wireless links with minimal power consumption. The employed chirp spread spectrum modulation provides a large link budget, combined with the excellent radio-wav...

Hemicorporectomy: back to front.

Hemicorporectomy involves amputation of the pelvis and lower extremities by disarticulation through the lumbar spine with concomitant transection of the aorta, inferior vena cava, and spinal cord, as well as creation of conduits for diversion of the urinary and fecal streams. A review of the literature reveals that the surgical technique has been relatively unchanged since 1960. The standard an...

Capacity Analysis of Base Station Diversity

Estimation of Whole-Body Average SAR in Human Body Exposed to a Base Station Antenna

Electromagnetic wave absorption inside a human body is investigated. The human body has been modeled using 3D voxel based dataset considering different electrical parameters. At GSM 900 band, Specific Absorption Rate (SAR) induced inside the human body model exposed to a radiating base station antenna (BSA) has been calculated for multiple number of carrier frequencies and input power of 20 W/c...

Multi robotic exploration with communication requirement to a fixed base station

We present an algorithm for multi robotic exploration of an unknown terrain where the robots are also required to serve the role of hops or nodes in a communication link maintained between a fixed base station and the last robot (end effector robot) in the chain. A baseline algorithm is presented as a tree traversal mechanism akin to a depth first strategy, further embellished by an adaptive ru...