Other-cell interference in cellular power-controlled CDMA

Viterbi, Andrew J.; Zehavi, Ephraim

doi:10.1109/tcomm.1994.582830

Cited by 334 publications

(185 citation statements)

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“…Proposition 2: As argued in [7], [18], [37], [59], [60], [72], [73], [86], [95], and [96], correlation in shadowing may be explained by a partial overlap of the large-scale propagation medium, as seen in Fig. 4.…”

Section: E More Elaborate (Nonseparable) Modelsmentioning

confidence: 87%

“…However, we prefer to address the problem at its root: let us use only such correlation models that will always produce psd correlation matrices, as suggested in [6], [45], and [56]. This has the following advantages: 1) a faster implementation time, as no provision for correcting non-psd matrices needs to be made; 2) probably a faster execution time for every realisation, as no decisions or corrections need to be made during the Monte Carlo simulation; 3) mathematical consistency and elegance: if a model is feasible, then it is safe for mathematical analysis [9]- [11], [13], [21], [22], [44], [52], [59]- [64].…”

Section: A Motivationmentioning

confidence: 99%

“…with 0 < ρ < 1, is sometimes used [5], [9]- [11], [20], [21], [29], [42], [45], [47], [53], [61], [63], [76], [82], [83] (ρ = 0.5 [7], [23], [59], [60]) when more information is lacking. However, [7] argued that this may be a too-simplistic model, comparing simulations that use constant versus nonconstant models.…”

Section: A Constant Modelmentioning

confidence: 99%

See 2 more Smart Citations

On the Feasibility of Wireless Shadowing Correlation Models

Szyszkowicz

Yanıkömeroğlu

Thompson

2010

IEEE Trans. Veh. Technol.

163

125

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Abstract-There is emerging interest in more detailed models for wireless shadowing, which may include nonconstant shadowing variance, non-lognormal shadowing, and, most importantly, correlation between paths; we focus on this last aspect. This paper offers a structured synthesis of the existing literature on autocorrelation and cross-correlation in wireless shadowing and attempts to fill existing gaps in the analysis of correlation models. We make a survey of these models and argue, as has previously been observed, that certain models are not mathematically feasible, which may lead to problems in simulations or analysis. We then state some theorems that test whether the models are positive semidefinite, which is the central necessary condition for feasibility, and evaluate the existing models accordingly. Additionally, we evaluate the models according to their physical plausibility, which leads us to choose one model among many as arguably the best one in existence so far. This paper should be useful as a guide on how to implement shadowing correlation in one's work, how to choose an appropriate correlation model, and how to modify existing models or create new models so that they fulfill mathematical feasibility.

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Section: E More Elaborate (Nonseparable) Modelsmentioning

confidence: 87%

Section: A Motivationmentioning

confidence: 99%

See 1 more Smart Citation

On the Feasibility of Wireless Shadowing Correlation Models

Szyszkowicz

Yanıkömeroğlu

Thompson

2010

IEEE Trans. Veh. Technol.

163

125

View full text Add to dashboard Cite

show abstract

“…In a multicell environment, the effect of intercell interference can be represented by a relative intercell interference factor [68]. However, originally designed for circuit-switched and uniformly distributed voice users, this factor is not accurate enough for the future IP-based packet voice/video/data transmissions.…”

Section: A Scheduling With Intercell Coordination In Fddmentioning

confidence: 99%

Quality-of-service provisioning and efficient resource utilization in CDMA cellular communications

Jiang

Zhuang

Shen

et al. 2006

IEEE J. Select. Areas Commun.

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Abstract-One of the major challenges in supporting multimedia services over Internet protocol (IP)-based code-division multiple-access (CDMA) wireless networks is the quality-of-service (QoS) provisioning with efficient resource utilization. Compared with the circuit-switched voice service in the second-generation CDMA systems (i.e., IS-95), heterogeneous multimedia applications in future IP-based CDMA networks require more complex QoS provisioning and more sophisticated management of the scarce radio resources. This paper provides an overview of the CDMA-related QoS provisioning techniques in the avenues of packet scheduling, power allocation, and network coordination, summarizes state-of-the-art research results, and identifies further research issues.Index Terms-Code-division multiple-access (CDMA), intercell coordination, multimedia services, packet scheduling, power allocation, quality-of-service (QoS), soft handoff.

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“…2. The value of the interference expansion factor depends on the traffic distribution of interfering cells and may well assume values greater than unity [15]; however we take selected values until F = 1 for our test cases here. We may deduce that intercell interference has a significant impact on performance.…”

Section: Impact Of the Interference Expansion Factormentioning

confidence: 99%

A Non-homogeneous QBD Approach for the Admission and GoS Control in a Multiservice WCDMA System

Koukoutsidis

Altman

Kélif

2005

Quality of Service – IWQoS 2005

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Abstract. We consider a WCDMA system with real time (RT) calls that have dedicated resources, and data non-real-time (NRT) calls that share system capacity. We apply reservation of some resources for the NRT traffic and assume that this traffic is further assigned the resources unused by RT calls. The grade of service (GoS) of RT traffic is also controlled in order to allow for handling more RT calls during congestion periods, at the cost of degraded transmission rates. We consider both the uplink and downlink, and derive performance evaluation results regarding user-perceived QoS parameters, namely the blocking rates of RT calls and sojourn time of NRT calls. On what concerns the bandwidth-sharing policy of NRT traffic, we compare WCDMA behavior in the presence of a high data rate scheme. Finally, we extend our results to cover NRT admission control schemes and examine blocking behavior and transfer times of NRT traffic.

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Other-cell interference in cellular power-controlled CDMA

Cited by 334 publications

References 1 publication

On the Feasibility of Wireless Shadowing Correlation Models

On the Feasibility of Wireless Shadowing Correlation Models

Quality-of-service provisioning and efficient resource utilization in CDMA cellular communications

A Non-homogeneous QBD Approach for the Admission and GoS Control in a Multiservice WCDMA System

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