indoor wireless communications systems
Comparison of Indoor Localization Systems Based on Wireless Communications
... Table 1 lists six means of obtaining positioning in- formation using radio communications. The best with respect to accuracy are TOF-UWB and signal phase. Their performance make them really interesting for loca- ...
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Design of an Omnidirectional Multibeam Transmitter for High Speed Indoor Wireless Communications
... speed indoor wireless communication, diffuse wireless optical communications offer more robust optical links against shadowing than line-of-sight ...diffuse indoor optical wireless ...
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Genetic algorithm optimisation methods applied to the indoor optical wireless communications channel
... OW systems described earlier, were predominantly based upon binary modulation, however in recent years several new schemes have been developed that may be of interest to the work presented ...
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Active patch array design and indoor channel modeling for future wireless communications
... future wireless network standards support data rates from 2 Mbps to over 100 ...future wireless systems have been proposed at 17 GHz (HIPERLAN II) and 60 GHz for a large available bandwidth and a ...
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Analysis and experimental evaluation of the frequency response of an indoor radiating cable in the UHF band
... in wireless technology systems and devices has contributed to a greater concentration of mobile devices in specific locations as well as an increase in the data transmission ...Consequently, wireless ...
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Design considerations of conventional angle diversity receivers for indoor optical wireless communications
... an indoor infrared channel are fully described by the channel’ s impulse re- sponse, which depends on multiple factors such as the room geometry, the reflection pattern of surfaces, the emitter and receiver ...
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Recent developments in indoor optical wireless systems
... Nevertheless, the resilience of MSM systems in the presence of multipath dispersion makes them attractive for indoor optical wireless communications. Thus, much recent effort has been di- ...
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60 GHz Indoor Propagation Studies for Wireless Communications Based on a Ray Tracing Method
... for wireless local area network (LAN) operating in the 60 GHz band as part of the 4th generation (4G) ...dense wireless local communications, particularly as relates to large wireless LAN ...
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PERFORMANCE OF COOPERATIVE COMMUNICATION SYSTEM WITH NETWORK CODING USING SOFTWARE DEFINED RADIO
... cooperative communications system is the information sent to the relay node will be strengthened and sent to the node ...communication systems without and with network coding were implemented on Software ...
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Differential Amplitude Pulse Position Modulation for Indoor Wireless Optical Communications
... access wireless local area networks from portable personal computers and mobile devices has grown ...the systems re- quire a large bandwidth. Since radio communication systems have limited available ...
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Performance analysis of gain ratio power allocation strategies for non orthogonal multiple access in indoor visible light communication networks
... Correspondingly, indoor VLC APs with UDN network- ing is an efficient way to improve the system traffic capac- ity and user experience [1], particularly in hotspot areas ...the indoor VLC network is an ...
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Spread spectrum techniques for indoor wireless IR communications
... The fundamentals of sequence inverse keying SIK, complementary SIK CSIK, and M-ary hi-orthogonal keying MBOK for I R systems, which is a mapping of DSSS using bipolar spreading sequences[r] ...
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Prefiltering-Based Interference Suppression for Time-Hopping Multiuser UWB Communications over MISO Channel
... Recently, a lot of attention was paid to UWB impulse radio systems since it is a promising technique for low-complexity low-power short-range indoor wireless communications [1– 5]. When such ...
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Wireless indoor network planning for advanced exposure and installation cost minimization
... Indoor wireless networks are playing a more and more important role in daily life due to the dramatically increas- ing amount of mobile ...adequate wireless network planning goes beyond providing a ...
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A WiMAX-Based Implementation of Network MIMO for Indoor Wireless Systems
... Other papers address similar practical issues relating to network MIMO in real-world systems. In [28, 29], capacity estimates derived from channel measurements in an urban microcellular system are used to ...
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A Survey of Recent Indoor Positioning Systems using Wireless Networks
... positioning systems are one of the most common types of positioning systems that use wireless ...IR-based wireless devices require line-of-sight (LOS) communication between the transmitter and ...
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Indoor visible light communications: performance evaluation and optimization
... constraints of the input signal. Moreover, ref. [7] derives a much tighter upper bound on the channel capacity for indoor VLC. By using pulse amplitude modulation and the inverse source coding, the capacity of VLC ...
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Security Ensured Data Gathering and Decision Support Framework for Remote Health Services
... of wireless sensor networks, where a collection of sensors are positioned on the human body measure certain physiological factors of a person and forward it to the monitoring hospital or medical ...open ...
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Indoor robot path planning assisted by wireless network
... and wireless data transmission function circuit module; the wireless data transmission module is used to receive the robot target position infor- mation in the indoor environment, such as point 2 and ...
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Evolution of Mobile Wireless Technology from 0G to 5G
... mobile communications systems are expected to provide a wide variety of services, from high-quality voice to high- definition video, through high-data-rate wireless channels anywhere in the ...
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