ITU-R F 747-1-2012 Radio-frequency channel arrangements for fixed wireless system operating in the 10 0-10 68 GHz band《操作在10 0-10 68 GHz频段内固定无线系统的射频频道分配》.pdf
《ITU-R F 747-1-2012 Radio-frequency channel arrangements for fixed wireless system operating in the 10 0-10 68 GHz band《操作在10 0-10 68 GHz频段内固定无线系统的射频频道分配》.pdf》由会员分享,可在线阅读,更多相关《ITU-R F 747-1-2012 Radio-frequency channel arrangements for fixed wireless system operating in the 10 0-10 68 GHz band《操作在10 0-10 68 GHz频段内固定无线系统的射频频道分配》.pdf(9页珍藏版)》请在麦多课文档分享上搜索。
1、 Recommendation ITU-R F.747-1(03/2012)Radio-frequency channel arrangements for fixed wireless system operating in the 10.0-10.68 GHz bandF SeriesFixed serviceii Rec. ITU-R F.747-1 Foreword The role of the Radiocommunication Sector is to ensure the rational, equitable, efficient and economical use of
2、 the radio-frequency spectrum by all radiocommunication services, including satellite services, and carry out studies without limit of frequency range on the basis of which Recommendations are adopted. The regulatory and policy functions of the Radiocommunication Sector are performed by World and Re
3、gional Radiocommunication Conferences and Radiocommunication Assemblies supported by Study Groups. Policy on Intellectual Property Right (IPR) ITU-R policy on IPR is described in the Common Patent Policy for ITU-T/ITU-R/ISO/IEC referenced in Annex 1 of Resolution ITU-R 1. Forms to be used for the su
4、bmission of patent statements and licensing declarations by patent holders are available from http:/www.itu.int/ITU-R/go/patents/en where the Guidelines for Implementation of the Common Patent Policy for ITU-T/ITU-R/ISO/IEC and the ITU-R patent information database can also be found. Series of ITU-R
5、 Recommendations (Also available online at http:/www.itu.int/publ/R-REC/en) Series Title BO Satellite delivery BR Recording for production, archival and play-out; film for television BS Broadcasting service (sound) BT Broadcasting service (television) F Fixed service M Mobile, radiodetermination, am
6、ateur and related satellite services P Radiowave propagation RA Radio astronomy RS Remote sensing systems S Fixed-satellite service SA Space applications and meteorology SF Frequency sharing and coordination between fixed-satellite and fixed service systems SM Spectrum management SNG Satellite news
7、gathering TF Time signals and frequency standards emissions V Vocabulary and related subjects Note: This ITU-R Recommendation was approved in English under the procedure detailed in Resolution ITU-R 1. Electronic Publication Geneva, 2012 ITU 2012 All rights reserved. No part of this publication may
8、be reproduced, by any means whatsoever, without written permission of ITU. Rec. ITU-R F.747-1 1 RECOMMENDATION ITU-R F.747-1 Radio-frequency channel arrangements for fixed wireless system operating in the 10.0-10.68 GHz band (Question 247/5) (1992-2012) Scope This Recommendation provides radio-frequ
9、ency channel arrangements for fixed wireless systems operating in the 10.0-10.68 GHz band or within its sub-bands. The channel arrangements specified in Annexes 1 to 4 are based on frequency separations of 3.5, 7, 14 or 28 MHz (derived from a 3.5 MHz homogeneous pattern), or frequency separations of
10、 2.5 or 5 MHz (derived from a 1.25 MHz homogeneous pattern). The ITU Radiocommunication Assembly, considering a) that the 10.0 to 10.68 GHz frequency range is allocated, directly in the Table of Frequency Allocations or through footnotes, to the fixed and mobile services; b) that this band is advant
11、ageous for various digital fixed wireless system applications using point-to-point or point-to-multipoint systems; c) that such systems are already in extensive use and are expected to be used more extensively in the future; d) that differing applications for various administrations may require diff
12、erent frequency plans; e) that several applications with various transmission signal characteristics and capacities may be in simultaneous use in this frequency band; f) that the specific band assigned to each application by each administration may vary from one country to another; g) that the appli
13、cations in this frequency band may require different channel bandwidths; h) that a high degree of compatibility between radio-frequency channels of different arrangements can be achieved by selecting all channel centre frequencies from a homogeneous basic pattern; j) that the differing digital hiera
14、rchies used in various countries or regions may require the use of homogeneous basic patterns with different intervals; k) that when very high capacity links (e.g. twice Synchronous transfer mode 1 (STM-1) are required, further benefits may be obtained using system bandwidths wider than the recommen
15、ded channel separation, associated to highly efficient modulation formats; l) that Recommendation ITU-R F.1568 provides guidance on frequency block arrangements for fixed wireless access systems in the band 10.15 to 10.3 GHz paired with 10.5 to 10.65 GHz; m) that administrations may choose to alloca
16、te certain parts of the bands to one-way links, for example electronic news gathering/outside broadcast (ENG/OB) links within the tuning range 10.0-10.68 GHz, in agreement to the recommended radio-frequency channel arrangements, 2 Rec. ITU-R F.747-1 recommends 1 that frequency plans for the 10.0 to
17、10.68 GHz band should be based on homogeneous patterns; 2 that the homogeneous pattern, for the 10.5 to 10.68 GHz band, with a preferred 3.5 MHz interval be defined by the relation: fn= fr 1 200.5 + 3.5 n MHz where the reference frequency of the homogeneous pattern is: fr= 11 701 MHz and the number
18、of radio-frequency pattern slots is: 1 n 50 (see Annex 1); 3 that the homogeneous pattern, for the 10.55 to 10.68 GHz band, with a preferred 1.25 MHz interval be defined by the relation: fn= fr 1 151 + 1.25 n MHz where the reference frequency of the homogeneous pattern is: fr= 11 701 MHz and the num
19、ber of radio-frequency pattern intervals is: 1 n 103 (see Annex 2); 4 that the homogeneous pattern, for the whole 10.0 to 10.68 GHz band, with a preferred 3.5 MHz interval, be defined by the relation: fn= fr 1701 + 3.5 n MHz where the reference frequency of the homogeneous pattern is: fr= 11 701 MHz
20、 and the number of radio-frequency pattern intervals is: 1 n 194 (see Annexes 3 and 4); 5 that the channel spacings, the centre gap, and the distance to the lower and upper band limits, the reference frequency, as well as any further subdivision or combination of radio-frequency channels should be a
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