Received signal-level, characteristics of wide-band transmission in mobile communications

Kozono, Shigeru; Seino, Shuichi; Nakabayashi, Hiroaki

doi:10.1109/pimrc.1996.567503

Cited by 8 publications

(9 citation statements)

References 2 publications

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“…The model proposed in [4] assumes that multipath waves arrive at the receiver under the following conditions. Each of the arriving waves ( reflected and/or diffracted waves, plus an LoS one) has a path length , these being independent and uniformly distributed within a given range.…”

Section: Fading Modelmentioning

confidence: 99%

“…The bandwidth of each arriving wave is greater than the receiver bandwidth (2 , centered at the carrier frequency ) and the power spectral density is assumed to be flat and centered on . Thus, the received signal power can be obtained from [4] ( 1) where is the speed of light and represents the path-length difference between the th and th arriving waves.…”

Section: Fading Modelmentioning

confidence: 99%

“…A new propagation parameter, the equivalent received bandwidth defined as the product between the system bandwidth 2 and the maximum possible difference in the propagation path length among different arriving components , , thus, reflecting the influence of system bandwidth and environment characteristics, is also proposed in [4]. The value of depends on the radius of the cell, hence, even for the same system bandwidth, the signal level distribution depends on the type of the considered cellular environment.…”

Section: Fading Modelmentioning

confidence: 99%

“…An expression for the received signal level, under nonline-of-sight (NLoS) conditions, is derived and examined for various values of propagation parameters. A generalization of this model to the line-of-sight (LoS) case and the introduction of a new propagation parameter, the equivalent received bandwidth , defined as the product between the system bandwidth and the maximum difference in propagation path length, is presented in [4]- [6]. It was shown that this new parameter is closely related to the fading depth.…”

Section: Introductionmentioning

confidence: 99%

“…This approach, having the Rice factor as a parameter, is derived by fitting simulation data obtained from the model in [4]. The paper is organized as follows.…”

Section: Introductionmentioning

confidence: 99%

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Fading depth dependence on system bandwidth in mobile communications-an analytical approximation

Cardoso

Correia

2003

IEEE Trans. Veh. Technol.

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Abstract-A simple and computationally inexpensive analytical approach to the evaluation of the short-term fading depth dependence on system bandwidth and environment characteristics is proposed. The approach, accounting for the maximum difference in propagation path length and having the Rice factor as a parameter, is derived from fitting simulated data from a model in the literature. Application examples are presented for global system for mobile communications (GSM), universal mobile telecommunications systems (UMTS), high-performance radio local area network (HIPERLAN), and mobile broadband systems (MBS), which give some insight into the fading depth observed under different conditions regarding system bandwidth and environment characteristics. Macro, micro, and picocell environments are considered. In the microcellular environment, the fading depth experienced by UMTS is below the one for GSM by 0.1 to 5.5 dB, while in the picocellular one, the difference between GSM and UMTS is not significant, being almost independent of environment characteristics. When considering HIPERLAN or systems with larger bandwidths, the fading depth, both in micro and picocellular environments, is smaller than the one verified by UMTS; however, there is an increased dependence on environment characteristics. In the macrocellular environment, the fading depth experienced by UMTS is about 6 to 11 dB below the one for GSM. Hence, different short-term fading margins should be considered for each system and working environment.Index Terms-Equivalent received bandwidth, mobile communication systems, Ricean fading, short-term fading, wide-band systems.

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Section: Fading Modelmentioning

confidence: 99%

Section: Fading Modelmentioning

confidence: 99%

Section: Fading Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…This approach, having the Rice factor as a parameter, is derived by fitting simulation data obtained from the model in [4]. The paper is organized as follows.…”

Section: Introductionmentioning

confidence: 99%

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Fading depth dependence on system bandwidth in mobile communications-an analytical approximation

Cardoso

Correia

2003

IEEE Trans. Veh. Technol.

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A Time-Domain Based Approach for Short-Term Fading Depth Evaluation in Wideband Mobile Communication Systems

Cardoso

Correia

2005

Wireless Pers Commun

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In this paper a time-domain technique for wideband fading depth evaluation, is proposed, which is applicable to both Line-of-Sight and Non-Line-of-Sight cases, and the probability functions of the wideband received power are derived, contributing for filling in the gap of short-term fading characterisation in wideband systems. Application examples for different systems, namely GSM, UMTS and HIPERLAN/2, working in different standard reference environments, are shown. As expected, it is observed that Rayleigh and Rice distributions are appropriate for evaluating the fading margins for GSM in some environments; nevertheless, for UMTS and HIPERLAN/2, fading margins are usually well below the ones obtained from considering these narrowband distributions, the differences reaching up to around 10 and 13 dB, respectively.A simple relationship between the physical and the geometrical environment properties, and the rms delay spread of the propagation channel is also proposed, establishing a relationship between two models independently derived by different authors. Using the proposed relationship, fading depth results from the proposed time-domain technique are compared with the ones for an environment-geometry based one, and a good agreement is verified. The difference in fading depth between both approaches is roughly below 2 dB.

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

Kozono

1994

IEEE Trans. Veh. Technol.

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Received signal-level, characteristics of wide-band transmission in mobile communications

Cited by 8 publications

References 2 publications

Fading depth dependence on system bandwidth in mobile communications-an analytical approximation

Fading depth dependence on system bandwidth in mobile communications-an analytical approximation

A Time-Domain Based Approach for Short-Term Fading Depth Evaluation in Wideband Mobile Communication Systems

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

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