An empirically-based path loss model for wireless channels in suburban environments

Erceg, V.; Greenstein, L.J.; Tjandra, S.Y.; Parkoff, S.R.; Gupta, Akanksha; Kulic, B.; Julius, Austin; Jastrzab, R.

doi:10.1109/glocom.1998.776865

Cited by 208 publications

(273 citation statements)

References 6 publications

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“…Ikegami extended Hata's work by analyzing the dependence of approximate equations of mean field strength in urban propagation environments with respect to height gain, dependence on street width, propagation distance and radio frequency. More recently, Erceg et al (1999) presented a stochastic channel model which can be applied to frequency ranges above two GHz (WiMAX). Additionally to height gains and propagation distance, Erceg included a parametrization of the environment into his model according to a flat or hilly terrain with either high or low vegetation.…”

Section: Related Workmentioning

confidence: 99%

Accelerating Radio Wave Propagation Algorithms by Implementation on Graphics Hardware

Rick¹,

Kuhlen²

2010

Wave Propagation in Materials for Modern Applications

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Section: Related Workmentioning

confidence: 99%

Accelerating Radio Wave Propagation Algorithms by Implementation on Graphics Hardware

Rick¹,

Kuhlen²

2010

Wave Propagation in Materials for Modern Applications

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“…Therefore, if modeling is performed for N and X σ , the number of coefficient parameters with poor physical interpretations increases. The model becomes complex [9], cannot reflect the antenna height information [10], and provides poor estimation accuracy (when the value of X σ becomes large) [8]. In the subsequent sections of this paper, the propagation mechanism for the over-rooftop propagation environment is studied on the basis of the geometrical optics method.…”

Section: Boundary Point Modelmentioning

confidence: 99%

“…With regard to the parameters N and X σ , studies have been performed for the suburban over-rooftop propagation environment [9,10]. However, the model absorbs all of the variations of the path-loss characteristics due to the BS/MS antenna heights and other propagation environment factors into the parameters N and X σ .…”

Section: Boundary Point Modelmentioning

confidence: 99%

Path loss prediction model for the over‐rooftop propagation environment of microwave band in suburban areas

Kita

Yamada

Satô

2006

Electron. Comm. Jpn. Pt. I

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SUMMARYIt is desirable that the method used for outdoor path loss estimation at microwave frequencies be one for which a worldwide consensus can be obtained through an ITU-R international standard. In this paper, a path loss prediction model for over-rooftop propagation environments is proposed for suburban areas. This model is based on the propagation mechanism explained by using the geometrical optics and consists of the direct wave region, the reflected wave region, and the diffracted wave region. The boundary points of these regions can be determined uniquely from the antenna height and building environment and all regions are continuously connected. Hence, high-precision estimation of the path loss can be estimated from the short-distance line-of-sight region to the far-field non-line-of-sight region. The proposed model is useful for channel design of microwave-band wireless access systems. Further, the method contributes to the ITU-R international standardization described above. Finally, it is shown that the measured path loss and the value estimated by the present model agree well at 2.2, 5.2, and 19.4 GHz.

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“…To get a p erfect evaluation of the p erformance of the develop ed communication sy stem, wireless channel is required to address its p rop agation, and than char acterized by the factors lik e surroundin g, characteristics of fad in g, Path loss, delay sp read of mu lt ip ath, Dopp ler sp read, Co-channel and adjacent channel interfer ence [12]. An accurate descr ip tion of the wireless channel is The Stanford University Interim (SUI) channel models are an extension of the earlier work by AT&T Wireless and Erceg et al [13].…”

Section: Stanford Uni Versit Y In Terim (Sui) Channe L Modelsmentioning

confidence: 99%

Bit Error Rate Performance Analysis for Various Modulation Techniques using SUI Channel in Multi-Carrier System

Ramakrishna

Kumar

2017

IJARCSSE

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Abstract-Orthogonal Frequency Division Multiplexing (OFDM) is of the strong prospects as a future wireless communication system. Improved spectral efficiency has been found in OFDM based on DFT, has a good orthogonality but inter symbol interference (ISI) and inter carrier interference (ICI) degrade the performance. ISI and ICI can be improved by using cyclic prefix (CP). About 20% of bandwidth is consumed by CP. For preferable performance DWT based OFDM gives better outlook than DFT based OFDM.. Three advantages of using DWT are desirable signal to noise ratio, desirable data rate and below per power requirement are given by wavelet based OFDM. Comparison of performances of BER using practical channel model known as Stanford University Interim (SUI) is given in this paper. Consideration to QPSK, 4QAM, 8QAM, 16 -QAM, 32QAM, 64-QAM, 128QAM and 256 QAM has been given in modeling. Channel condition and modulation are the pre -cursors given for the selection of particular performance.Keywords-OF DM, MIM O, BER, Cyclic Prefix, DF T, DWT, SUI Channel. I. INTRODUCTIONAs a mult icarrie r modulat ion technique orthogonal frequency divis ion multip le xing (OFDM) can be s een as a better pros pect of future wire les s communication, better quality audio, v ideo and mobile integrated s ervice are the requis ites for data trans mis s ion at higher data rates in current and future mobile co mmun ication. Inter s y mbol interference (ISI) is caus ed due to extens ion of channel impuls e res ponse over many s ymbol period and it res ults when data is s en d at high bit rates . Signal is s end in parallel form and bandwidth is divided into narrow s ub channel in Orthogonal frequency divis ion mu ltip le xing (OFDM) to do away with delay s pread [1] [2]. Signal can be executed in joint time-frequency domains wavelet trans form [3]. Orthogonality is imp roved us ing wavelet to s upport time and frequency domain. Orthogonal wavelets are capable to reduced the effect of inter s ymbol interference (ISI) and inter carrier interference (ICI) wh ich are due to loss of orthogonality between the carriers as a res ult of mu ltipath propagation over the wireles s fading channels . Cyclic prefix (CP) is us ed in OFDM to overcome inter s ymbol interference (ISI) and inter channel interference (ICI). Cyc lic pre fix (CP) is not mandatory in wave let bas ed OFDM. CP may be 20% or more of s ymbol. Thus wavelets bas ed OFDM gives about 19% -21% of more bandwidth efficiency [4]. Wavelets based OFDM is les s affected by Doppler s hift. Timefrequency as well as orthogonality is s upport in wavelet based OFDM . Phase linearity as well as imp ortant out -of band rejection is p rovided by wavelet. Factors such as mult i-p ath, frequency offset, timing offset, and noise wireless environment is unforeseeable than wired mediu m. The receiv ed signal is thus suffer from amp litude and p hase distortion as the signal p assed through adverse chann el cond itions. Channel assessment gives the idea about chann el resp onse. The dy namic assessment of channel ...

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An empirically-based path loss model for wireless channels in suburban environments

Cited by 208 publications

References 6 publications

Accelerating Radio Wave Propagation Algorithms by Implementation on Graphics Hardware

Accelerating Radio Wave Propagation Algorithms by Implementation on Graphics Hardware

Path loss prediction model for the over‐rooftop propagation environment of microwave band in suburban areas

Bit Error Rate Performance Analysis for Various Modulation Techniques using SUI Channel in Multi-Carrier System

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