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
"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."