Impulse response measurements in the 902-928 and 1850-1990 MHz bands in macrocellular environments

Wepman, J.A.; Hoffman, J.; Loew, L.H.; Tanis, W.J.; Hughes, Michelle

doi:10.1109/icupc.1993.528451

Cited by 16 publications

(14 citation statements)

References 5 publications

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“…A wide-band measurement system [6] was used to collect impulse response data. The system transmitted a 511-bit psuedonoise (PN) code at a rate of 10 Mb/s using binary phase-shift keying modulation.…”

Section: Measurement Systemmentioning

confidence: 99%

Basic transmission loss and delay spread measurements for frequencies between 430 and 5750 MHz

Papazian

2005

IEEE Trans. Antennas Propagat.

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Impulse response radiowave propagation measurements from an urban area of Denver, CO, are described. The basic transmission loss and delay spread are used to characterize the mobile communications environment. These metrics are quantified using path loss slope and delay spread statistics. By analyzing the results versus carrier frequency, the relative propagation impairments at 430, 1350, 2260, and 5750 MHz are compared. It was found that the path loss slope increased on average by 11 dB/dec and the median delay spread decreased from 0.7 to 0.3 s over the decade of frequencies measured.Index Terms-Basic transmission loss, delay spread, impulse response, path loss, radiowave propagation, urban environment.

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Section: Measurement Systemmentioning

confidence: 99%

Basic transmission loss and delay spread measurements for frequencies between 430 and 5750 MHz

Papazian

2005

IEEE Trans. Antennas Propagat.

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“…Analyses providing a comprehensive description of the statistical behavior of the impulse responses in each cell. along with a more detailed explanation of the entire measurement project, are given in [6]. These analyses include maximum delay, mean delay, and RMS delay spread statistics; effects of spatial diversity; multipath power statistics; and correlation bandwidth statistics in addition to the number of paths.…”

Section: Data Analysis Methods and Resultsmentioning

confidence: 99%

“…These tables show detailed time-of-arrival and path power information for up to 10 paths. Tables showing the same statistics using a -20 dB threshold are found in [6]. Tables 1-111 are organized so that each column represents all of the APDP's within a cell that have n paths where n varies from 1-10.…”

Section: Data Analysis Methods and Resultsmentioning

confidence: 99%

Analysis of impulse response measurements for PCS channel modelling applications

Wepman¹,

Hoffman²,

Loew³

1995

IEEE Trans. Veh. Technol.

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Impulse response measurements for Personal Communication Services (PCS) were taken in the 1850-1990 MHz band in three outdoor macrocellular (cell radii of 5 km) environments: flat rural, hilly rural, and urban high-rise. The data were analyzed to provide information to assist in the development of radio propagation channel (especially tapped delay line) models for PCS applications. Analyses included number of paths, path arrival time, and path power statistics. Results of the analyses were found to be highly dependent on the threshold level used in processing. The urban high-rise cell showed a far greater number of paths than the rural cells for threshold levels 20 and 10 dB below the normalized peak of the power delay profiles.

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“…From this we found the RMS delay spread. RMS delay spread is calculated as the square root of the second central moment of the power-delay profile of a measured signal [22]- [24]. Fig.…”

Section: ) Measurement Set-upmentioning

confidence: 99%

“…A common rule of thumb is to calculate the RMS delay spread from signals at least 10 dB above the noise floor of the measurement [24]. For the measurements described in the following sections, we defined the minimum dynamic range to be approximately 40 dB below the peak value, although this value was reduced for lower signal levels.…”

Section: ) Measurement Set-upmentioning

confidence: 99%

Radio-Wave Propagation Into Large Building Structures—Part 2: Characterization of Multipath

Remley

Koepke

Holloway

et al. 2010

IEEE Trans. Antennas Propagat.

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We report on measurements that characterize multipath conditions that affect broadband wireless communications in building penetration scenarios. Measurements carried out in various large structures quantify both radio-signal attenuation and distortion (multipath) in the radio propagation channel. Our study includes measurements of the complex, wideband channel transfer function and bandpass measurements of a 20 MHz-wide, digitally modulated signal. From these, we derive the more compact metrics of time delay spread, total received power and error vector magnitude that summarize channel characteristics with a single number. We describe the experimental set-up and the measurement results for data collected in representative structures. Finally, we discuss how the combination of propagation metrics may be used to classify different propagation channel types appropriate for public-safety applications.Index Terms-Attenuation, broadband radio communications, building penetration, digital modulation, emergency responders, error vector magnitude, excess path loss, received power, time-delay spread, vector network analyzer, vector signal analyzer, wireless signals, wireless system measurements, wireless telecommunications. Manuscript

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Impulse response measurements in the 902-928 and 1850-1990 MHz bands in macrocellular environments

Cited by 16 publications

References 5 publications

Basic transmission loss and delay spread measurements for frequencies between 430 and 5750 MHz

Basic transmission loss and delay spread measurements for frequencies between 430 and 5750 MHz

Analysis of impulse response measurements for PCS channel modelling applications

Radio-Wave Propagation Into Large Building Structures—Part 2: Characterization of Multipath

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