Antenna System for Land Mobile Satellite Communications
نویسندگان
چکیده
Personal wireless communications is a true success story and has become part of people’s everyday lives around the world. Whereas in the early days of mobile communications Quality of Service (QoS) was often poor, nowadays it is assumed the service will be ubiquitous, of high speech quality and the ability to watch and share streaming video or even broadcast television programs for example is driving operators to offer even higher uplink and downlink data-rates, while maintaining appropriate QoS.
منابع مشابه
Physical-statistical model for the land mobile-satellite channel applied to satellite/HAP-MIMO
This paper derives a physicalstatistical land mobile-satellite/HAP propagation channel model that can predict joint statistical time series and power-spatial-delay profile data in a multi-antenna mobile, multi-satellite scenario, and is compared with published measurement data. The model is then used to estimate the required satellite and HAP antenna separation to achieve an uncorrelated Satell...
متن کاملMaximal Ratio Combining SC-FDMA Performance over Land Mobile Satellite Rice fading Channel
The fourth generation mobile communication has used MIMO (Multiple Input Multiple Output) technology to improve system performance .MIMO can be used to get better capacity, coverage, high data rates and throughputs. Land mobile satellite (LMS) systems are an important element of the third and fourth generation of wireless systems. In satellite communication system, the use of nonlinear Travelin...
متن کاملInvestigations of Radiation Characteristics of a Circularly Polarized Conical Beam Spherical Slot Array Antenna∗
This paper presents the radiation characteristics of a circularly polarized conical beam spherical slot array antenna for applying to the mobile satellite communication subscriber. The structure of the antenna is easy to fabricate i.e., a ring of perpendicular slot pairs cut on an outer surface of a concentric conducting spherical cavity enclosed by the conducting conical surface with the simpl...
متن کاملLow Cost Electronically Steered Antenna and Receiver System for Mobile Satellite Communications
The design, construction and basic characteristics of an electronically steered, adaptive phased array antenna for land mobile satellite communications are described. The antenna system includes an array of six microstrip stacked patch antennas, each connected to an RF channel, which include an MMIC Low Noise Amplifier and a commercial silicon monolithic I-Q modulator. A 6-way microstrip combin...
متن کاملRealization of Simple Antenna System Using ETS-VIII Satellite for Land Vehicle Communications
This paper presents a realization of a simple antenna system for land vehicle satellite communication that is tested in experiments conducted on the Engineering Test Satellite-VIII (ETS-VIII). The developed antenna system which was mounted onto a vehicle roof is compact, light weight with simple satellite-tracking operation. In order to realize compact antennas, an onboard-power divider and swi...
متن کامل