WirelessNetwork.rar - In this paper, we focus on a dynamic spectrum access strategy for Internet of Things (IoT) applications in two types of radio systems: cellular networks and cognitive radio-enabled low power wide area networks (CR-LPWANs). The spectrum channel contention between the licensed cellular networks and the unlicensed CR-LPWANs, which work with them, only takes place within the cellular radio spectrum range. Our aim is to maximize the spectrum capacity for the unlicensed users while ensuring that it never interferes with the licensed network.,2018-11-13 18:25:09,下载2次
IoT spectrum sharing.rar - This chapter discusses equipment positioning, which has a large range of
potential applications from per-user advertisement, through elderly-care until cop
security. We propose a general system based on passive measurements that, in
contrast to currently available solutions using one specific technology (e.g., Wi-Fi),
runs in multi-technology environment. This means that it is possible to position
radio equipment using any of the radio technologies: Wi-Fi, Bluethooth, RFID and
other technologies based on IEEE 802.15.4 operating in the 2.4 GHz band. Thanks
to that, our platform will significantly increase the number of monitored users.
Service of abovementioned technologies will be implemented by means of a
common hardware platform, using time multiplex in the radio space.,2018-11-13 18:17:26,下载0次
ScienceDirect_articles_26Oct2018_08-17-08.937.zip - This work evaluates interference mitigation mechanisms to enable the operation of self-organizing hybrid terrestrial-satellite networks with aggressive frequency reuse
between terrestrial and also satellite links. The objective is to take advantage of the improved capacity and resilience to congestion of such networks while assuring and efficient use of the spectrum. In
particular, single- and multi-user hybrid analog-digital beamforming (HADB) techniques are considered as well as hybrid carrier allocation. The simulation results show network spectral efficiency improvements, with respect to conventional terrestrial backhaul systems, up to 2x when applying carrier allocation, and
between 3.5x to 9x applying HADB in different environments.,2018-11-13 18:01:47,下载9次
dynamic.spectrum.access.survey.rar - In a case where all providers are cooperative, the spectrum sharing can be realized easily and improve user throughput in average. In another case where providers are not cooperative, some spectrum trading methods based on auction theory had been proposed.,2018-11-13 17:57:53,下载0次
A spectrum sharing method based on ATM.rar - In recent years, the number of portable mobile terminal users is increasing with improvement of the wireless communication environment. In addition, mobile multimedia services also bring the increase of wireless traffic and lack of
spectrum resources. As a technique for efficient spectrum use, spectrum sharing receives much attention. It dynamically assigns a spectrum channel from a larger area network such as WiMAX to smaller area networks such as WiFi-based wireless LANs and achieves to increase the total wireless communication capacity of this area. In a case where all providers are cooperative, the spectrum sharing can be realized easily and improve user throughput in average. In another case where providers are not
cooperative, some spectrum trading methods based on auction theory had been proposed.,2018-11-13 17:53:14,下载1次