A radio access system with distributed antennas

This paper analyzes a radio access system that has multiple antennas spatially distributed throughout each cell, instead of a single antenna at each cell. The same signal is simulcast by each antenna in the cell. The signals at a given cell could be multiplexed and modulated for radio transmission a...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 1996-05, Vol.45 (2), p.265-275
Main Author: Kerpez, K.J.
Format: Article
Language:English
Subjects:
Applied sciences
Coaxial cables
Digital audio broadcasting
Equipments and installations
Exact sciences and technology
Frequency conversion
Hybrid fiber coaxial cables
Mobile radiocommunication systems
Optical fiber cables
Personal communication networks
Radio frequency
Radiocommunications
Receiving antennas
Signal processing
Telecommunications
Telecommunications and information theory
Transmitting antennas
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Summary:This paper analyzes a radio access system that has multiple antennas spatially distributed throughout each cell, instead of a single antenna at each cell. The same signal is simulcast by each antenna in the cell. The signals at a given cell could be multiplexed and modulated for radio transmission at a single node, then transmitted on a coaxial cable distribution system to and from the distributed antennas in a cell. Frequency translation and radio frequency (RF) amplification may need to be performed at each antenna, except for indoor applications with short coaxial cables. This paper presents calculations of signal-to-interference ratios (SIR) and handoff performance for cells with distributed antennas. It is shown that the use of distributed antennas can substantially increase the SIR above a system with a single antenna per cell, and this increase is quantified. It is also shown that increasing the number of antennas results in better overall handoff performance, with a lower number of handoffs and higher received signal power. Minimizing the number of handoffs will reduce the impact of wireless services on network elements.
ISSN:0018-9545
1939-9359
DOI:10.1109/25.492850