Vehicular Technology Conference. IEEE 55th Vehicular Technology Conference. VTC Spring 2002 (Cat. No.02CH37367)
DOI: 10.1109/vtc.2002.1002672
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Analysis and results for the orthogonality factor in WCDMA downlinks

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Cited by 25 publications
(25 citation statements)
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“…In this section we present a new link/system level interface. It is based on a simplified description of intracell interference, called orthogonality factor [1][2][3], which we discuss first.…”
Section: A Orthogonality Factormentioning
confidence: 99%
See 1 more Smart Citation
“…In this section we present a new link/system level interface. It is based on a simplified description of intracell interference, called orthogonality factor [1][2][3], which we discuss first.…”
Section: A Orthogonality Factormentioning
confidence: 99%
“…We point out difficulties in applying common approaches such as average value interface and actual value interface [4], which offer simple singlevalued parameterizations of link-level simulations but cannot deal well with new link adaptation and radio resource management techniques used in HSDPA. Further analysis leads us to proposing a new link/system interface based on the concept of orthogonality factor (OF) [1][2][3]. Our method provides an efficient way of modeling frequency-selective fading on a system level and Rake receiver on a link level, which we regard as the key issue in modeling of HDSPA system.…”
mentioning
confidence: 99%
“…Although the spreading sequences used in CDMA are designed to show orthogonality between them when perfect synchronism is achieved, multipath channels introduce Multiple Access Interference due to the loss of orthogonality of the time-shifted versions of the spreading sequences. This effect is usually modelled in analysis and simulations by means of the time averaged value of the orthogonality factor.1 Some authors, [1,2], have recently worked in a complete characterization of this parameter.…”
Section: Introductionmentioning
confidence: 99%
“…where SF 16 denotes spreading factor 16 as used for the HS-DSCH, P Rx,DSCH is the received desired HS-DSCH signal power, P own is the received own cell interference, P other is the received other cell interference, and α is the so-called downlink orthogonality factor [11]- [12]. Note that (6) is derived under the assumption that a standard single antenna Rake receiver is used at the new user.…”
Section: Quality Based Hsdpa Access Algorithmmentioning
confidence: 99%
“…Assuming a priori knowledge of α, ρ can be estimated by the RNC according to (11), since the rest of the terms are known via measurements from the Node-B and the user. Given the estimated average HS-DSCH SINR at the new user, the average throughput that the user can be served with equals f (ρ) for the special case where the user is scheduled in every TTI with all the available HSDPA transmission power.…”
Section: Quality Based Hsdpa Access Algorithmmentioning
confidence: 99%