1、STD*CEPT CEPTIERCIREC 12-05 E-ENGL 199b 2326414 001484b T83 D CEPT/ERC/REC 12-05 E Page 1 Distribution: B CEPT/ERURECOMMENDATION 12-05 E (Rome 1996) HARMONISED RADIO FREQUENCY CHANNEL ARRANGEMENTS FOR DIGITAL TERRESTRIAL FIXED SYSTEMS OPERATING IN THE BAND 10.0 - 10.68 GHz Text of the Recommendation
2、 adopted by Working Group “Spectrum Engineering” (WG SE): The European Conference of Postal and Telecommunications Administrations, considering 1. 2. that CEPT has a long term objective to harmonise the use of frequencies throughout Europe, that CEPT should develop radio frequency channel arrangemen
3、ts in consultation with organisations developing standards for radio systems, in order to make the most effective use of the spectrum available, 3. that any radio frequency channel arrangement should incorporate a provision for the future introduction of improved equipment standards, noting that CEP
4、TERC Report 25 allocates the paired bands 10.15 - 10.3 and 10.5 - 10.65 GHz for fixed systems including point to multipoint, and the removal of the Mobile service from the band 10.5 - 10.68 GHz, that Article S5 of the Radio Regulations allocates the band 10 - 10.45 GHz on an equal primary basis to t
5、he Fixed and Radiolocation services, and the band 10.6 - 10.68 GHz to the Fixed, Earth Exploration Satellite (passive), Radio Astronomy, and Space Research services, that CEPT/ERC has defined the band 10.0 - 10.68 GHz as one of the harmonised tuning ranges for ENG/OB equipment, that in some countrie
6、s sharing studies indicate sharing between Fixed and Radar systems is feasible, that in some countries it is not currently practicable to implement the paired band 10.15 - 10.3 and 10.5 - 10.65 GHz due to military requirements, that in some countries coordination is required between the Fixed and Ra
7、dioastronomy services in the 10.6 - 10.68 GHz band (see CEFT/ERC Report 36), Edition of 1 August, 1996 CEPTIERCIREC 12-05 E Page 2 recommends 1. that CEPT Administrations which have the paired bands 10.15 - 10.3 and 10.5 - 10.65 GHz available for the Pixed service should follow the recommended radio
8、 frequency channel arrangements given in Annex A, 2. that administrations which have different paired bands available may allow the current channel arrangements to remain unchanged until the year 2015, and may determine, on a national basis, the degree of protection given. International coordination
9、 between existing and new systems shall be in accordance with article S11 of the Radio Regulations, 3. that administrations may choose to allocate certain parts of the bands to one way links, for example ENGIOB links within the tuning range 10.0 - 10.68 GHz, in agreement to the recommended radio fre
10、quency channel arrangements given in Annex A, 4. that further sharing studies between Fixed and Radar systems in these bands need to be completed.” Edition of 1 August, 1996 sTD.CEPT CEPT/ERC/REC 12-05 E-ENGL 3996 232b434 0034848 856 CEPTERCREC 12-05 E Annex A, Page 1 Annex A DERIVATION OF RADIO FRE
11、QUENCY CHANNELS The radio frequency channel arrangements for the 10 to 10.68 GHz band are based on channel slots of 0.5 MHz and are derived as follows: fp=f0-1701+05p (IvIHz) wherep ranges from O to 1359 Let f, be the reference frequency of the pattern = 11701 MHz and f, be the lower edge frequency
12、(MHz) of each slot Within the band 10.15 - 10.3 GHz (p = 300 to 599) paired with 10.5 - 10.65 GHz (p = lo00 to 1299) equipment will utilise a duplex spacing of 350 MHz. For point-t+multipoint systems discrete channel centre frequencies can be obtained from within the 0.5 MHz slots. For other systems
13、 the channel centre frequencies could be derived by multiplication of the 0.5 MHz slots as indicated below: Let f, be the reference frequency of the pattern = 11701 MHz f, be the centre frequency (MHz) of a radio frequency channel in the lower half of the band f, be the centre frequency (MHz) of a r
14、adio frequency channel in the upper half of the band The frequencies of individual channels are expressed by the following relationships: For systems with a carrier spacing of 28 MHz Lowerhalfofband f, =(fo-1561+28n) MHz Upper half of band: f, = (f, - 121 1 + 28n) MHz where For systems with a carrie
15、r spacing of 14 MHz Lower half of band f, = (f, - 1554 + 14n) MHz Upper half of band fn = (f, - 1204+ 14n) MHz where For systems with a carrier spacing of 7 MHz Lower half of band f, = (f, - 15505+ 7n) MHz Upper half of band f, = (f, - 12005 + 7n) MHz where For systems with a carrier spacing of 3.5
16、MHz Lower half of band f, = (f, -1552.25+ 35n) MHz Upper half of band: f, = (f, - 120225 + 35n) MHz where n = 1,2 . 5 n = 1,2 . 10 n = 1,2 _ 20 n = 1,2 . 42 Edition of 1 August, 1996 CEPTIERCIREC 12-05 E Annex A, Page 2 xs MHz 28 14 7 3.5 Table 1. Calculated parameters according to ITU-R Recommendat
17、ion F 746 n f, fn fi f n ZiS z2s YS DS MHz MHz MHz MHz MHz MHz MHz MHz 1,2 . 5 10168 10280 10518 10630 18 20 23 8 350 1,2 . 10 10161 10287 10511 10637 11 13 224 350 1,2 . 20 10157.5 10290.5 10507.5 10640.5 7.5 9.5 217 350 1,2 . 42 10152.25 10295.75 10502.25 10645.75 2.25 4.25 206.5 350 XS YS ZiS &S
18、DS Separation between centre frequencies of adjacent channels Separation between centre frequencies of the closest go and return channels Separation between the lower band edge and the centre frequency of the first channel Separation between the centre frequency of the final channel and the upper ba
19、nd edge Duplex Spacing (f m - fm ) Edition of 1 August, 1996 STDmCEPT CEPT/ERC/REC 12-05 E-ENGL 1996 2326414 001Y850 YO4 - CEPTERCIREC 12-05 E Annex A, Page 3 Table 2. Occupied spectrum: 10.15 - 10.65 GHz band Centre Gap 200 MHz 300 x 0.5 MHz ch + + + + 10150 MHz 10300 MHz 10500 MHz 10650 MHz Guard
20、band 4MHz Centre Gap 210 MHZ Guard band 6MHz + + + + 10150 MHz 10294 MHz 10504 MHZ 10650 MHz Guard band 4MHZ Centre Gap 210 MHZ Guard band 6MHz + + + + 10150 MHz 10294 MHz 10504 MHz 10650 MHz Guard band 4MHz Centre Gap 210 MHz Guard band 6MHz + + + + 10150 MHz 10294 MHz 10504 MHz 10650 MHz Guard band 0.5 MHZ Centre Gap 203 MHz Guard band 2.5 MHz + + + + 10150 MHz 10297.5 MHz 10500.5 MHz 10650 MIEZ Edition of 1 August, 1996
