ETSI - EN 301 179
Transmission and Multiplexing (TM); Digital Radion Relay Systems (DRRS); Frequency Hopping Code Division Multiple Access (FH-CDMA); Point-to-Multipoint DRRS in the Bands within the Range 1 GHz to 3 GHz
| Organization: | ETSI |
| Publication Date: | 1 April 1998 |
| Status: | inactive |
| Page Count: | 22 |
scope:
Applications
The scope of the present document covers the following typical P-MP applications:
• voice;
• fax;
• voiceband data;
• telex;
• data up to 64 kbit/s;
• ISDN.
Frequency bands and channel arrangements
The present document covers fixed services bands at 1,5 GHz, 2,2 GHz, 2,4 GHz and 2,6 GHz.
The frequency plans for the 1,5 GHz, 2,2 GHz and 2,6 GHz bands are given in CEPT Recommendation T/R 13-01 [7] and ITU-R Recommendation F.1098 [20]. For the 2,4 GHz band, the ITU-R Recommendation F.701-2 [8] is applicable
Access method
The standard covers Frequency Hopping - Code Division Multiple Access (FH-CDMA) systems.
NOTE: The method described in the present document applies slow frequency hopping DTR/TM-04038 [26], with a hopping period up to 5 msec. 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 subclause 3.1).
Compatibility
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.
Document History
