wireless indoor 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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Active patch array design and indoor channel modeling for future wireless communications
... of wireless systems both in urban microcells and in indoor ...of indoor channels by combined 2-D E/H ray-tracing method has been presented to achieve good results in path loss and delay ...
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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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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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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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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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FRONTIERS OF WIRELESS AND MOBILE COMMUNICATION
... of wireless and mobile communication has a remarkable history that spans over a century of technology innovations from Marconi’s first transatlantic transmission in 1899 to the worldwide adoption of cellular ...
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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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Genetic algorithm optimisation methods applied to the indoor optical wireless communications channel
... Fluorescent lamps driven by electronic ballasts, or sometimes known as high frequency fluores- cent lamps, are a more recent development. The technology is commonly found in energy saving lights and will become more ...
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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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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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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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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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Two Stage Maximum Likelihood Estimation (TSMLE) for MT CDMA Signals in the Indoor Environment
... multimedia communications is one of the challenges currently being addressed in the research do- main for the upcoming next generation wireless sys- tems [1, ...generation systems is expected, and ...
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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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Evaluation of range based indoor tracking algorithms by merging simulation and measurements
... Radio frequency (RF) ray tracing is a particularly valuable technique in the development of wireless tech- nologies in indoor environments. It is based on a phys- ical channel model that allows far superior ...
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Timing and carrier synchronization in wireless communication systems: a survey and classification of research in the last 5 years
... In wireless communications, timing and carrier synchronization are fundamental requirements ...a wireless receiver does not have prior knowledge of the physical wireless channel or propagation ...
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A WiMAX-Based Implementation of Network MIMO for Indoor Wireless Systems
... It is well known that multiple-input multiple-output (MIMO) techniques can bring numerous benefits, such as higher spectral efficiency, to point-to-point wireless links. More recently, there has been interest in ...
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Measured wideband characteristics of indoor channels at centimetric and millimetric bands
... static indoor measurements, the measured CIR is essentially only one snapshot of an environment, ...for indoor ranging and localization purpose in ...
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Evolution of Mobile Wireless Technology from 0G to 5G
... mobile wireless evolved in a very short span of ...mobile Wireless Communication Networks along with their significance and advantage of one over the ...mobile wireless evolution progressed from Zero ...
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