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ÖNORM EN 301744 V 1.2.1:2001-05

Действует
Fixed Radio Systems - Point-to-multipoint equipment - Direct Sequence Code Division/Time Division Multiple Access (DS-CD/TDMA) - Point-to-multipoint digital packet radio systems in frequency bands in the range 3 GHz to 11 GHz
1.1 Applications
The present document covers the following typical pointtomultipoint data applications.
Wide Area Networks;
Internet data;
Voice over IP;
Data.
1.2 Frequencies
The present document covers fixed service allocations in the 3 GHz to 11 GHz band. Bands identified by CEPT for
PMP applications between 3 GHz and 11 GHz are:
3 410 MHz to 3 600 MHz [5];
3 600 MHz to 3 800 MHz [6]; and
10,15 GHz to 10,3 GHz paired with 10,5 GHz to 10,65 GHz [7].
1.3 Access method
The standard covers DSCD/TDMA systems.
The dual definition of the access method arises from the particular features of this system, whereby multiple access is
available firstly through the code division, which allows multiple carriers within the channel, and then by sequential
time allocation to individual users. The multiple carriers are not cochannel, but are offset from each other by up to half
the channel spacing, so packet data systems employing DSCDMA for multiple cochannel bearers are not within the
scope of the present document.
1.4 Compatibility
There shall be no requirement to operate Central Station (CS) equipment from one manufacturer with Terminal Station
(TS) or Repeater Station (RS) equipment from another manufacturer.
ICS
33.060.30 Radio relay and fixed satellite communications systems / Радиорелейные и стационарные спутниковые системы связи