1、CEPTIERCIREC 12-07 E Page 1 Distribution: B CEPT/ERC/RECOMMENDATION 12-07 E (Rome 1996) HARMONISED RADIO FREQUENCY CHANNEL ARRANGEMENTS FOR DIGITAL TERRESTRIAL FIXED SYSTEMS OPERATING IN THE BANDS 14.5 - 14.62 GHz PAIRED WITH 15.23 - 15.35 GHz Text of the Recommendation adopted by Working Group “Spe
2、ctrum Engineering” (WG SE): “The European Conference of Postal and Telecommunications Administrations, considering 1. that CER has a long term objective to harmonise the use of frequencies throughout Europe, 2. that CEPT should develop radio frequency channel arrangements in consultation with organi
3、sations develo- ping 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 o improved equipment standards, noting a) that Article 8 of the Radio Regula
4、tions allocates the band 14.5 - 14.8 GHz on an equal primary basis to the Fixed, Fixed-Satellite (Earth-to-space) and Mobile except Aeronautical Mobile services, and on a seconda- ry basis to the Space Research service, b) that Article 8 of the Radio Regulations allocates the band 14.8 - 15.35 GHz o
5、n an equal primary basis to the Fixed and Mobile services, and on a secondary basis to the Space Research service, c) that the band 14.62 - 15.23 GHz is a harmonised NATO band for fixed and mobile services, d) that the channel arrangements given in ITU-R Recommendation F.636-3 result in a 1 MHz incu
6、rsion into the NATO band, recommends i. that CEPT Administrations which have the band 14.5 - 15.35 GHz available for the Fixed service should follow the recommended radio frequency channel arrangements for the sub-bands 14.5 - 14.62 GHz paired with 15.23 - 15.35 GHz given in Annex A, 2. that due to
7、a 1 MHz incursion into the NATO band 14.62 - 15.23 GHz by the lower edge of the sub-band 15.23 - 15.35 GHz, for the lowest specified channel, with channel spacings of 56, 28, 7, 3.5 and 1.75 MHz, CEPT Administrations should not use these channels unless coordinated with their national military autho
8、rities.” I In practice the equipment occupied bandwidth may not use the specified channel spacing and therefore eases the coordination between the two adjacent services Edition of 1 August, 1996 CEPTIERCIREC 12-07 E Annex A, Page i Annex A DERIVATION OF RADIO FREQUENCY CHANNELS For the band 14.5 - 1
9、4.62 GHz paired with 15.23 - 15.35 GHz the radio frequency channel arrangements for carrier spacings of 56 MHz, 28 MHz, 14 MHz, 7 MHz, 3.5 MHz and 1.75 MHz shall be derived as follows: Let f, be the reference frequency of 14924 MHz (4264 x 3.5 MHz) f, be the centre frequency (MHz) of a radio frequen
10、cy channel in the lower half of the band f , be the centre frequency (MHz) of a radio 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 56 MHz Lower half of band: f, = (f, - 45 1
11、+ 56n) MHz Upper half of band: f , = (f, + 277 + 56n) MHz where n = 1,2 For systems with a carrier spacing of 28 MHz Lower half of band: f, = (f, - 437 + 2811) MHz Upper half of band: f , = (f, + 291 + 2811) MHz where For systems with a carrier spacing of 14 MHz Lower half of band: f, = (f, - 423 +
12、14n) MHz Upper half of band: f , = (f, + 305 + 14n) MHz where For systems with a carrier spacing of 7 MHz Lower half of band: f, = (f, - 426.5 + 7n) MHz Upper half of band: f = (f, + 301.5 + 7n) MHz where For systems with a carrier spacing of 3.5 MHz Lower half of band: f, = (f, - 424.75 + 3.51) MHz
13、 Upper half of band: f , = (f, + 303.25 + 3.511) MHz where For systems with a carrier spacing of 1.75 MHz Lower half of band: f, = (f, - 423.875 + 1.7%) MHz Upper half of band: f, = (f, + 304.125 + 1.75n) MHz where n = 1,2 . 4 n = 1,2 . 8 n = 1,2 . i6 n = 1,2 . 32 n = 1,2 . 64 Edition of 1 August, 1
14、996 STD-CEPT CEPT/ERC/REC 12-07 E-ENGL L99 W 232b414 0013942 321 m CEPTIERCIREC 1207 E Annex A, Page 2 Table 1. Calculated parameters according to ITU-R Recommendation F 746 xs MHZ 56 28 14 7 3.5 1.75 n 2 4 8 16 32 64 f, MHz 14529 145 15 14515 14504.5 14502.75 14501.875 f, MHZ 14585 14599 14613 1460
15、9.5 1461 1.25 14612.125 f, MHZ 15257 15243 15243 15232.5 15230.75 15229.875 XS YS Z,S Z,S 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 f
16、irst channel Separation between the centre frequency of the final channel and the upper band edge Duplex Spacing (f, - f,) Edition of I August, 1996 Guard band 1 MHz CEPTIERCIREC 12-07 E Annex A, Page 3 Table 2. Occupied spectrum: 14.5 - 15.35 GHz band Centre Gap 616 MHz Guard band 9 MHz 2 x 56 MHz
17、channels 2 x 56 MHz channels + + 15229 MHz 15350 MHz + 14613 MHz + 14500 MHz Guard band 1 MHz Centre Gap 616 MHz Guard band 9 MHz 4 x 28 MHz channels 4 x 28 MHz channels + 15350 MHz + + * 14500 MHz 14613 MHz I5229 MHz Guard band 8 MHz Centre Gap 616 MHz Guard band 2 MHz 8 x i4 MHz channels 8 x 14 MH
18、z channels + + * 14620 MHz 15236 MHz 15350 MHz * 14500 MHz Guard band 1 MHz Centre Gap 616 MHz Guard band 9 MHz 16 x 7 MHz channels 16 x 7 MHz channels + + + 14613 MHz 15229 MHz 15350 MHz + 14500 MHz Guard band 1 MHz Centre Gap 616 MHz Guard band 9 MHz + + + * 14500 MHz 14613 MHz 15229 MHz 15350 MHz Guard band 1 MHz Centre Gap 616 MHz Guard band 9 MHz + i 5350 MHz + + 15229 MHz + 14500 MHz 14613 MHz Edition of 1 August, 1996
