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Remote Frequency Calibration of Passive Wireless Microsystems
Published in Iniewski Krzysztof, Integrated Microsystems, 2017
In wireless communication systems, a mobile station must be able to both receive data from a base station and transmit packets of data back to the base station over wireless channels. In active mobile stations, such as cellular phones, large energy storage devices, that is, batteries, allow for the filtering and amplification of incoming signals as small as a few microvolts of amplitude and peak transmission output power as large as a few watts. In passive mobile stations, such as radio-frequency-identification (RFID) tags, however, the only source of energy available to the systems is the power of the radio-frequency (RF) waves from the base station. Due to the unavailability of large storage capacitors in these passive systems and the fast communication requirement of these systems, it is impractical to store energy for later usage [1]. Therefore, the design constraints of practical passive mobile wireless systems are (1) the total change of energy over each transaction is zero or negative (inward flow) and (2) all the power entering the system shall exit shortly afterwards.
Optimization of Paging Cost in Mobile Switching System by Genetic Algorithm
Published in Don Potter, Manton Matthews, Moonis Ali, Industrial and Engineering Applications of Artificial Intelligence and Expert Systems, 2020
The mobile station could be a car phone, hand held, transportable, or any other type of wireless terminals. Each mobile station is identified by a mobile identification number (MIN). The mobile station (MS) transmits the information of network address, data, and voice. It is also tunable on system command to a channel in the radio frequency spectrum allocated to the mobile switching system at the certain pre-programmed power level.
Sources of Radio Frequency Radiation
Published in Riadh W. Y. Habash, Electromagnetic Fields and Radiation, 2018
A mobile station (MS) is defined as transmitting/receiving device used in an unfixed position. Examples include cellular telephones, devices using vehicle-mounted antennas, and wireless devices used with personal computers.
Spatiotemporal Statistics of Mobile-to-Mobile Communication Channel Employing Directional Antennas
Published in IETE Journal of Research, 2022
Adil Latif Lone, Muhammad Riaz, M. Yaqoob Wani
The increasing growth in the field of wireless communications over recent years is because of the mobility awareness among people and its inherent benefits and potential of establishing the communication links between automobiles, robotic machines, aircrafts and ships and so on. Cellular mobile communications is one of the fastest growing segments of wireless communications where in a cellular radio equipment known as the base station (BS) with well elevated antennas above the local terrain communicates with mobile station (MS) having low elevated antennas and usually surrounded by buildings, mountains and other structures.