Spatial and Temporal Variation of Wideband Indoor Channels

Ndzi, David; Savage, Nick; Grémont, Boris

doi:10.1155/2010/735434

Cited by 7 publications

(3 citation statements)

References 15 publications

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“…It can be seen that the system can clearly detect the evolution of the channel response over small distances. A good understanding of small-scale indoor channel variation is key to the effective delivery of wireless high data rate services [21,22].…”

Section: Simulation Of Flat Fading Channelmentioning

confidence: 99%

An FPGA-Based Adaptable 200 MHz Bandwidth Channel Sounder for Wireless Communication Channel Characterisation

Ndzi

Stuart

Toautachone

et al. 2011

International Journal of Reconfigurable Computing

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This paper describes the development of a fast adaptable FPGA-based wideband channel sounder with signal bandwidths of up to 200 MHz and channel sampling rates up to 5.4 kHz. The application of FPGA allows the user to vary the number of real-time channel response averages, channel sampling interval, and duration of measurement. The waveform, bandwidth, and frequency resolution of the sounder can be adapted for any channel under investigation. The design approach and technology used has led to a reduction in size and weight by more than 60%. This makes the sounder ideal for mobile time-variant wireless communication channels studies. Averaging allows processing gains of up to 30 dB to be achieved for measurement in weak signal conditions. The technique applied also improves reliability, reduces power consumption, and has shifted sounder design complexity from hardware to software. Test results show that the sounder can detect very small-scale variations in channels.

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Section: Simulation Of Flat Fading Channelmentioning

confidence: 99%

An FPGA-Based Adaptable 200 MHz Bandwidth Channel Sounder for Wireless Communication Channel Characterisation

Ndzi

Stuart

Toautachone

et al. 2011

International Journal of Reconfigurable Computing

Self Cite

View full text Add to dashboard Cite

show abstract

“…The description of the mutual dependency between the large-scale fading (LSF) and small-scale fading (SSF) as well as spatial and temporal characteristics of this wireless channel (cross correlation properties) is important for the implementation of realistic network level simulators for wideband mobile communication systems in indoor environments [17,18]. The correlation properties for indoor propagation channel have been characterized based on wideband measurements [19][20][21][22][23]. The cross correlation of the LSF and SSF parameters of two separated subchannels, the autocorrelation of the LSF parameters of one single subchannel, and the correlation of the SSF parameters of the PDP for an ultrawideband system have been analyzed in [23].…”

Section: Introductionmentioning

confidence: 99%

Experimental Characterization and Correlation Analysis of Indoor Channels at 15 GHz

Zhou

Zhang

et al. 2015

International Journal of Antennas and Propagation

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The indoor radio channels at 15 GHz are investigated based on measurements. The large- and small-scale fading behaviors as well as the delay dispersion characteristics are discussed. It is found that the large-scale fading, RiceanK-factor, and delay spread can be described by log-normal distributions. Furthermore, both autocorrelation and cross correlation properties of the above parameters are analyzed and modeled. These parameters characterize fading and delay behaviors as well as their mutual dependency and can be used as empirical values for future wireless system design and simulation in 15 GHz short-range indoor channels.

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“…The widespread use of smart-phones has also accelerated growth in high data rate applications. Significant studies have been carried out in short-range indoor environment [1,2]. However studies in short-range outdoor environment where most of the mobile devices are used have received relatively little attention.…”

Section: Introductionmentioning

confidence: 99%

Wideband Sounder for Dynamic and Static Wireless Channel Characterisation: Urban Picocell Channel Model

Ndzi¹,

Stuart²,

Toautachone³

et al. 2011

PIER

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Abstract-This paper presents a high speed configurable FPGAbased wideband channel sounder with signal bandwidths up to 200 MHz and results of a study of dynamic urban picocell channel. The use of FPGA allows the sounder to be adaptable for measurements in different scenarios. Adaptable options include changes to the waveform, bandwidth, channel sampling rate and real-time averaging to improve signal-to-noise ratio in weak signal conditions. The implemented architecture has led to a 60% reduction in size and weight compared to sounders in use elsewhere making it ideal for mobile channel measurements. The study of an urban picocell channel has shown that dynamic variation due to automotive traffic introduces average signal fades of up to 5 dB but causes frequency selective fading with depths of up to 40 dB. Existing channel models assume antenna heights of more than 6 m and path lengths of more than 30 m. Therefore there is a need for shorter path models and this paper proposes a linear picocell channel model for static and dynamic urban environment.

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Spatial and Temporal Variation of Wideband Indoor Channels

Cited by 7 publications

References 15 publications

An FPGA-Based Adaptable 200 MHz Bandwidth Channel Sounder for Wireless Communication Channel Characterisation

An FPGA-Based Adaptable 200 MHz Bandwidth Channel Sounder for Wireless Communication Channel Characterisation

Experimental Characterization and Correlation Analysis of Indoor Channels at 15 GHz

Wideband Sounder for Dynamic and Static Wireless Channel Characterisation: Urban Picocell Channel Model

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