Received signal-level characteristics in a wide-band mobile radio channel

Kozono, Shigeru

doi:10.1109/25.312798

Cited by 43 publications

(27 citation statements)

References 7 publications

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“…The reason for this is that wideband signals inherently exploit frequency diversity (Lee 1991, Kozono 1994, Yamaguchi et al 1995. While the probability distributions of small-scale narrowband signal envelope fading, for which closed-form expressions exist, have been extensively studied (see, for example, Young 1952, Nakagami 1960, Jakes & Reudink 1967, Clarke 1968, Suzuki 1977, comparatively few such studies are reported for wideband systems (Kozono 1994, Yamaguchi et al 1995, Yan & Kozono 1999, Oh et al 2001) and closed-form expressions for the CDF and PDF of the small-scale fading envelope are unavailable. Kozono (1994) and Yan & Kozono (1999) have proposed a wideband signal propagation model with which they investigated the small-scale fading of the received signal envelope of a mobile receiver.…”

Section: Small-scale Wideband Signal Envelope Fadingmentioning

confidence: 99%

“…While the probability distributions of small-scale narrowband signal envelope fading, for which closed-form expressions exist, have been extensively studied (see, for example, Young 1952, Nakagami 1960, Jakes & Reudink 1967, Clarke 1968, Suzuki 1977, comparatively few such studies are reported for wideband systems (Kozono 1994, Yamaguchi et al 1995, Yan & Kozono 1999, Oh et al 2001) and closed-form expressions for the CDF and PDF of the small-scale fading envelope are unavailable. Kozono (1994) and Yan & Kozono (1999) have proposed a wideband signal propagation model with which they investigated the small-scale fading of the received signal envelope of a mobile receiver. They verified their model with extensive measurements performed in the Tokyo region (Kozono 1994, Nakabayashi & Kozono 1998, Yan & Kozono 1999, Nakabayashi et al 2001 and observed that the fading depth is strongly dependent not only on the ratio of the direct to indirect power of the wideband signal but also on what they term the 'Equivalent Received Bandwidth'.…”

Section: Small-scale Wideband Signal Envelope Fadingmentioning

confidence: 99%

“…Kozono (1994) and Yan & Kozono (1999) have proposed a wideband signal propagation model with which they investigated the small-scale fading of the received signal envelope of a mobile receiver. They verified their model with extensive measurements performed in the Tokyo region (Kozono 1994, Nakabayashi & Kozono 1998, Yan & Kozono 1999, Nakabayashi et al 2001 and observed that the fading depth is strongly dependent not only on the ratio of the direct to indirect power of the wideband signal but also on what they term the 'Equivalent Received Bandwidth'. They also observed that the distribution of the signal envelope is almost independent of the carrier frequency.…”

Section: Small-scale Wideband Signal Envelope Fadingmentioning

confidence: 99%

See 2 more Smart Citations

Link Quality Prediction in Mobile Ad-Hoc Networks

Gaertner¹,

O'Nuallain²

2012

Foundation of Cognitive Radio Systems

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Section: Small-scale Wideband Signal Envelope Fadingmentioning

confidence: 99%

Section: Small-scale Wideband Signal Envelope Fadingmentioning

confidence: 99%

Section: Small-scale Wideband Signal Envelope Fadingmentioning

confidence: 99%

See 1 more Smart Citation

Link Quality Prediction in Mobile Ad-Hoc Networks

Gaertner¹,

O'Nuallain²

2012

Foundation of Cognitive Radio Systems

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“…Nakabayashi and Kozono [19] investigated the autocorrelation properties of smallscale wideband signal envelope fading based on the wideband signal propagation model of [20]. They showed that the autocorrelation of the small-scale fading signal envelope is independent of the receiver bandwidth and is given for both, narrowband and wideband signals, by [19] [21] (pp.…”

Section: Link Quality Predictorsmentioning

confidence: 99%

Link Quality Prediction for 802.11 MANETs in Urban Microcells

Gaertner¹,

Nuallain²

2016

JCC

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In this paper we derive the optimal link quality predictor (LQPR) whose parameters are estimated from signal power and node speed samples. We propose a fast estimator for these parameters whose computational complexity is three orders lower than that of the optimal estimator with only a slight loss in accuracy thus enabling realtime execution. We show that using the most recent local mean of the signal as a predictor of future signal strength is also a very close approximation to the optimal predictor. This is the central result of this paper. It obviates the need for complex and/or computationally intensive link quality predictors for 802.11 in urban microcells and has the advantage of not requiring node speed information. The LQPRs are evaluated against the lower error bound. We show that the LQPR based on the most recent local mean of the signal predicts the packet reception probability for pedestrians in urban microcells on average with a mean absolute error of 13.47%, 16.54%, 18.21% and 19.38% for 1 s, 2 s, 3 s and 4 s into the future respectively. This LQP accuracy resembles closely the lower error bound with, for example, a difference of only 2.47% at 2 s into the future.

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“…The number of RAKE receiver fingers needed at different bandwidths to capture a certain percentage of the total power has been investigated by Martin and Faulkner [2]. Received signal levels and correlation properties are investigated by Kozono [3]. Iwai et al [4] have investigated wideband signal fluctuations and path and spatial diversity for CDMA systems.…”

Section: Introductionmentioning

confidence: 99%

An investigation of measured and simulated wideband channels with applications to 1.25 MHz and 5 MHz CDMA systems

Asplund

Glazunov

Berg

1998

VTC '98. 48th IEEE Vehicular Technology Conference. Pathway to Global Wireless Revolution (Cat. No.98CH36151)

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, J-E. (1998). An investigation of measured and simulated wideband channels with applications to 1.25 MHz and 5 MHz CDMA systems. In 48th IEEE Vehicular Technology Conference, 1998. VTC 98. (Vol. 1, pp. 562-566). DOI: 10.1109/VETEC.1998 General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal An Investigation of Measured and Si ulated Wideband Channels with Applications to 1.25 MHz and 5 MHz CDMA SystemsHenrik Asplund, Andres Alayon Glazunov and Jan-Erik BergEricsson Radio Systems AB S-16480 Stockholm SwedenAbstract -Fading of the wideband radio channel and its implications for CDMA RAKE receiver operation has been investigated using measured wideband impulse responses and simulations with an exponentially shaped channel model. The emphasis has been on systems with 1.25 MHz and 5 MHz bandwidth, and the reduction in fading variations as well as the increased complexity in terms of required RAKE correlator branches when increasing the bandwidth has been studied. An analysis of the consequences of fast power control has also been performed.

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Received signal-level characteristics in a wide-band mobile radio channel

Cited by 43 publications

References 7 publications

Link Quality Prediction in Mobile Ad-Hoc Networks

Link Quality Prediction in Mobile Ad-Hoc Networks

Link Quality Prediction for 802.11 MANETs in Urban Microcells

An investigation of measured and simulated wideband channels with applications to 1.25 MHz and 5 MHz CDMA systems

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