TW234802B - Microcellular communications system with centralized base stations and distributed antenna units - Google Patents

Microcellular communications system with centralized base stations and distributed antenna units

Info

Publication number
TW234802B
TW234802B TW82106764A TW82106764A TW234802B TW 234802 B TW234802 B TW 234802B TW 82106764 A TW82106764 A TW 82106764A TW 82106764 A TW82106764 A TW 82106764A TW 234802 B TW234802 B TW 234802B
Authority
TW
Taiwan
Prior art keywords
digital
units
output
antenna
base station
Prior art date
Application number
TW82106764A
Other languages
Chinese (zh)
Inventor
S Russell David
G Fischer Larry
M Wala Philip
Original Assignee
A D C Telecomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by A D C Telecomm Inc filed Critical A D C Telecomm Inc
Application granted granted Critical
Publication of TW234802B publication Critical patent/TW234802B/en

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  • Mobile Radio Communication Systems (AREA)

Abstract

A microcellular communications network includes a plurality of base station units and corresponding antenna units. The base station units are housed in a common location. Each includes either conventional transmitters and receivers or all digital transmitter and receiver equipment, and interface circuitry to a mobile telecommunications switching office. The microcell traffic output is applied to a frame generator/multiplexer. The output of the frame generator/multiplexer is applied to a digitally modulated laser. The laser output is conveyed by fiber to a remote antenna unit, which demultiplexes the microcell traffic signal and applies it to a digital-to-analog converter. The output of the digital-to-analog converter is applied to a power amplifier, which in turn is connected to a main antenna. RF signals from the mobile units are received at both a main and a diversity antenna. The received signals are filtered, digitized, multiplexed together and transmitted over the optical fiber back to the base station. The strongest signal is selected for use. Deployment of an all digital microcellular communications system occurs in two stages. The method thus allows for the benefit of a digital system to be accomplished in the early stages of the upgrade while without the expense of modifying the digital microcell antenna units in the second stage of the upgrade.
TW82106764A 1993-05-28 1993-08-21 Microcellular communications system with centralized base stations and distributed antenna units TW234802B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6838993A 1993-05-28 1993-05-28

Publications (1)

Publication Number Publication Date
TW234802B true TW234802B (en) 1994-11-21

Family

ID=51348820

Family Applications (1)

Application Number Title Priority Date Filing Date
TW82106764A TW234802B (en) 1993-05-28 1993-08-21 Microcellular communications system with centralized base stations and distributed antenna units

Country Status (1)

Country Link
TW (1) TW234802B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5839071A (en) * 1993-09-21 1998-11-17 Telstra Corporation Limited Base station for a mobile telecommunications system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5839071A (en) * 1993-09-21 1998-11-17 Telstra Corporation Limited Base station for a mobile telecommunications system

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