3G HSDPA evolution: MIMO and 64QAM performance in macrocellular deployments

Tenorio, Santiago; Pezennec, Yannick Le; Sierra, M.

doi:10.1109/ew.2008.4623927

Cited by 5 publications

(3 citation statements)

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“…5. Measurements from real network deployments do not show this behavior [7]. Instead, the users at -3 dB geometry are usually found at the site borders.…”

Section: Antenna Diagram and Geometrymentioning

confidence: 95%

System performance challenges of IMT-Advanced test environments

Burstrom

Furuskar

Wänstedt

et al. 2009

2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications

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The test environments for system level evaluations of IMT-A (International Mobile Telecommunications-Advanced) candidate technologies are analyzed. Compared to the evaluation criteria for previous IMT standards, the IMT-A test environments provide significantly more realistic settings for evaluating system-level performance. The models include line-ofsight probability in all scenarios, different groups of users in terms of propagation and speed, as well as indoor and outdoor deployments. This contribution scrutinizes the evaluation conditions and presents resulting performance for a basic Long-Term Evolution (LTE) candidate system. Each environment contains challenging characteristics. Examples include a mix of indoor and outdoor users, a mix of line-of-sight and non-line-ofsight conditions, and terminal speeds making accurate tracking of channel quality difficult. Together, these characteristics suggest that a radio transmission technology fulfilling the ITU IMT-A requirements is well suited for meeting a variety of challenges of real deployment scenarios.

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“…5. Measurements from real network deployments do not show this behavior [7]. Instead, the users at -3 dB geometry are usually found at the site borders.…”

Section: Antenna Diagram and Geometrymentioning

confidence: 95%

System performance challenges of IMT-Advanced test environments

Burstrom

Furuskar

Wänstedt

et al. 2009

2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications

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“…Hence good knowledge of the geometry factor provides useful information of the system potential even if the current load is low. Furthermore by excluding the noise term, a measure that is independent of access and bandwidth is obtained, which differ from the commonly used measurement for WCDMA [1]. Therefore the geometry factor measure obtained for GSM is also applicable on the dynamically scheduled bandwidth in LTE.…”

Section: IImentioning

confidence: 98%

“…These measurements predict the cell isolation in an LTE network with similar cell layout. Geometry factor distributions can be obtained through system measurements of live traffic [1] [2], which have the advantage of providing realistic user distributions. UE based drive-test geometry factor measurements can alternatively be performed with known user positions, e.g.…”

mentioning

confidence: 99%

LTE Outdoor & Indoor Interference Assessment Based on UE Measurements

Larsson

Christoffersson

Simonsson

et al. 2011

2011 IEEE 73rd Vehicular Technology Conference (VTC Spring)

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Cell isolation or the inter-cell interference is an important characteristic of radio networks. The cell isolation together with link performance limits the achievable user throughput and the capacity for a 1-reuse link adaptive packet access systems such as LTE. In this paper, cell isolation is measured as geometry factors and assessed through UE measurements in two different networks utilizing different access techniques, LTE and GSM. The use of UE measurements are beneficial in the sense that the mobile position is always known, making it possible to distinguish between indoor and outdoor positions. It is found that the geometry factor is higher indoor than outdoor. The GSM measurements provide better accuracy because of the sparse frequency reuse and more mature mobiles detecting a large set of neighbor cells. These GSM measurements also confirm previous system measurements on commercial traffic in the same area.

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