Network synchronisation of radio ports in wireless personal communications

Ariyavisitakul, S.; Lau, R.C.; Arnold, H. W.

doi:10.1049/el:19921488

Cited by 10 publications

(2 citation statements)

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“…For this reason, methods have been studied to institute frame synchronization among the radio channels transmitted by the base stations. The simplest concept is the slave synchronization of all base stations to a reference timing [1]. For instance, it is possible to enact frame synchronization in reference to time information from the GPS (Global Positioning System).…”

Section: Introductionmentioning

confidence: 99%

Autonomous master-slave frame synchronization among microcellular base stations

Yahata

1999

Electron. Comm. Jpn. Pt. I

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Section: Introductionmentioning

confidence: 99%

Autonomous master-slave frame synchronization among microcellular base stations

Yahata

1999

Electron. Comm. Jpn. Pt. I

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“…This technique, which generates nulls in the horizontal plane, is often used to reduce the CCI and was adopted in many BS antennas in both cellular and microcellular wireless communication systems throughout the world. Another method to reduce CCI for high-elevated BSs in a macrocell is the autonomous decentralized synchronization technique [14,15], which synchronizes time slots in TDMA/TDD between BSs to lower the CCI and increase the channel capacity. Unfortunately, these techniques offer only limited success and a more effective approach is still needed.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigations of Cochannel Interference Reduction Effect at High Elevation Base Station Using Beam Tilt and Orthogonal Polarization

Uwano

Ando

Seki

et al. 2014

International Journal of Antennas and Propagation

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This paper addresses the problem of cochannel interference (CCI) generated in a mixed cell architecture in microcellular systems. In this type of microcellular systems in which both microcells and macrocells coexist in the same geographical urban area, the base station antennas mounted on the rooftops of buildings to cover wide circular radio zones suffer severe CCI from the surrounding low base stations. A dielectric-loaded slotted-cylinder antenna (DSCA) is applied to horizontally polarized omnidirectional array antennas in a height-diversity configuration with the high gain of 8 dBi, which is comparable to that of a collinear antenna, to reduce the CCI. The measurements conducted in a suburban area clarify the reduction in the CCI for three techniques. The beamtilt technique reduces the CCI level by approximately 10 dB for both collinear antennas and the DSCA array antennas. The use of horizontal polarization reduces the CCI level by approximately 13 dB for the DSCA array antennas with and without beam tilt. The combination of the beam tilt and horizontal polarization or the DSCA array antennas with beam tilt significantly reduces the CCI level by approximately 23 dB.

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Autonomous time synchronization among radio ports in wireless personal communications

Chuang

1994

IEEE Trans. Veh. Technol.

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Network synchronisation of radio ports in wireless personal communications

Cited by 10 publications

References 1 publication

Autonomous master-slave frame synchronization among microcellular base stations

Autonomous master-slave frame synchronization among microcellular base stations

Experimental Investigations of Cochannel Interference Reduction Effect at High Elevation Base Station Using Beam Tilt and Orthogonal Polarization

Autonomous time synchronization among radio ports in wireless personal communications

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