ETSI - EN 301 253
Fixed Radio Systems; Point-to-Multipoint Equipment; Frequency Hopping Code Division Multiple Access (FH-CDMA); Point-To-Multipoint Digital Radio Systems in Frequency Bands in the Range 3 GHz to 11 GHz
|Publication Date:||1 October 2000|
The scope of the present document covers the following typical P-MP applications, delivered directly or indirectly, or in any superimposed transport network layer:
- voiceband data;
- integrated Services Digital Network (ISDN);
- Internet access.
Frequency bands and channel arrangements
The present document covers Fixed Service allocations in the 3 GHz to 11 GHz bands. Bands presently identified and provided with specific channel arrangements by CEPT for point to multipoint applications between 3 GHz and 11 GHz are:
- 3 410 MHz to 3 600 MHz CEPT/ERC Recommendation 14-03 ;
- 3 600 MHz to 4 200 MHz CEPT/ERC Recommendation 12-08 ;
- 10,15 GHz to 10,3 GHz paired with 10,50 GHz to 10,65 GHz CEPT/ERC Recommendation 12-05 .
The present document may cover equipment which uses either Frequency Division Duplexing or Time Division Duplexing.
NOTE: As with other point-to-multipoint standards, attention should be given to assigning spectrum so as to allow different systems to operate in adjacent assigned frequencies without unacceptable mutual interference. This is the responsibility of the regulatory authorities who are advised to note any guidelines produced by CEPT, particularly those with reference to spectrum where different duplex methods are to be used.
The standard covers Frequency Hopping (FH) - Code Division Multiple Access (FH-CDMA) systems.
NOTE: The method described in the present document applies slow FH defined in TR 101 274 , with a hopping period up to 400 ms. During the dwell time, several different links in the same area may operate on different sub-channels in a manner which resembles the characteristics and properties of FDMA systems. The sub-channel supporting each link may be further subdivided using frequency division, time division or a combination of both techniques. (The terms "hopping period", "dwell time" and "sub-channel" are defined in clause 3.1).
The present document is not intended to ensure that a Central Station (CS) from one manufacturer will inter-operate with a Terminal Station (TS) or Repeater Station (RS) from another manufacturer.