Propagation measurements for microcells in central Stockholm

Lotse, F.; Wejke, A.

doi:10.1109/vetec.1990.110380

Cited by 35 publications

(6 citation statements)

References 2 publications

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“…This observation is in line with those made by Chia [8] and Lotze [9], who have experimentally found a signal degradations of 20-30dB within 10-20 metres of street comers. It is within this region that a handoff would be expected to be instigated.…”

Section: E X P M I M E N T a L Results And Discussionsupporting

confidence: 92%

Network planning aspects of DS-CDMA with particular emphasis on soft handoff

Simmonds

Beach

IEEE 43rd Vehicular Technology Conference

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In this paper, a study into the application of soft handoff in wideband Direct Sequence Multiple Access Communications systems (DS-CDMA) is described. Soft handoff is explained in terms of macroscopic diversity, a form of diversity combining in which signals transmitted via independently fading paths can be combined in order to enhance the overall performance. Results from a series of outdoor propagation studies, specifically designed to investigate the propagation aspects of soft handoff are presented and the future work activities of the project are outlined.

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Section: E X P M I M E N T a L Results And Discussionsupporting

confidence: 92%

Network planning aspects of DS-CDMA with particular emphasis on soft handoff

Simmonds

Beach

IEEE 43rd Vehicular Technology Conference

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“…Due to street corner effect in urban microcellular settings, RSS can drop by 20-30 dB over a distance as small as 10 m [17]. If handover request from rapidly moving MS in microcellular networks is not processed quickly, excessive dropped calls will occur.…”

Section: Handover Initiation Algorithmmentioning

confidence: 99%

A New Empirical Formula for Handover Rate in Microcellular Systems

Singh

Aggarwal

Kumar³

2005

Int J Wireless Inf Networks

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In this paper, we propose a new empirical formula for handover rate as a function of base stations separation, standard deviation of shadow fading, path loss exponent, averaging distance, and correlation distance. The handover initiation algorithm is based on averaged signal strength measurements using relative signal strength with hysteresis margin approach. We generate the data through computer simulations for the average number of handovers referred to as handover rate, for the practical range of path loss exponent and standard deviation of shadow fading. The proposed formula provides for a practical design tool to optimize the handover initiation performance under varied propagation environments.

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“…Many microcell studies conducted at 800 and 900 MHz document signal level changes of 15-25 dB after turning corners in urban areas [24,25,42,51,93,96]. At 2 and 6 GHz, corner attenuation values of 10-40 dB are reported [26,57].…”

Section: Previous Workmentioning

confidence: 99%

Urban Propagation Modeling for Wireless Systems

Smith¹,

Cox²

2004

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Propagation measurements for microcells in central Stockholm

Cited by 35 publications

References 2 publications

Network planning aspects of DS-CDMA with particular emphasis on soft handoff

Network planning aspects of DS-CDMA with particular emphasis on soft handoff

A New Empirical Formula for Handover Rate in Microcellular Systems

Urban Propagation Modeling for Wireless Systems

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