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Thông báo của Nhóm nghiên cứu 9 / ITU-R

      Ngày 10 /10/ 2007, Văn phòng Thông tin Vô tuyến (Radiocommunication Bureau) của ITU đã gửi thông báo số CACE/435 cho các thành viên về quyết định của Nhóm nghiên cứu 9 (SG9 / ITU-R):   thông qua 13 Khuyến nghị sửa đổi;  03 khuyến nghị mới và bỏ 21 Khuyến nghị cũ
Danh sách các Khuyến nghị được sửa đổi:
1. Recommendation ITU-R F.1094-2: Maximum allowable error performance and availability degradations to digital fixed wireless systems (FWS) arising from radio interference from emissions and radiations from other sources
2. Recommendation ITU-R F.1495-1: Interference criteria to protect the fixed service from time varying aggregate interference from other radiocommunication services sharing the 17.7-19.3 GHz band on a co-primary basis
3. Recommendation ITU-R F.1669-1: Interference criteria of fixed wireless systems operating in the 37-40 GHz and 40.5-42.5 GHz bands with respect to satellites in the geostationary orbit
4. Recommendation ITU-R F.592-4: Vocabulary of terms for the fixed service
5. Recommendation ITU-R F.1490-1: Generic requirements for fixed wireless access systems
6. Recommendation ITU-R F.1103-1: Basic requirements and technologies for fixed wireless access systems operating in bands below 3 GHz for the provision of wireless subscriber connections in rural areas
7. Recommendation ITU-R F.383-8: Radio-frequency channel arrangements for high-capacity fixed wireless systems operating in the lower 6 GHz (5 925 to 6 425 MHz) band
8. Recommendation ITU-R F.384-10: Radio-frequency channel arrangements for medium- and high- capacity digital fixed wireless systems operating in the upper 6 GHz (6 425-7 125 MHz) band
9. Recommendation ITU-R F.386-8: Radio-frequency channel arrangements for fixed wireless systems operating in the 8 GHz (7 725 to 8 500 MHz) band
10. Recommendation ITU-R F.385-9:  Radio-frequency channel arrangements for fixed wireless systems operating in the 7 GHz (7 110-7 900 MHz) band
11. Recommendation ITU-R F.746-9 : Radio-frequency arrangements for fixed service systems
12. Recommendation ITU-R F.1099-4: Radio-frequency channel arrangements for high- and medium-capacity digital fixed wireless systems in the upper 4 GHz (4 400-5 000 MHz) band
13. Recommendation ITU-R F.497-7: Radio-frequency channel arrangements for fixed wireless systems operating in the 13 GHz (12.75-13.25 GHz) frequency band.

Danh sách các khuyến nghị mới:
1. Recommendation ITU-R F.1819: Protection of the radio astronomy service in the 48.94-49.04 GHz band from unwanted emissions from HAPS in the  47.2-47.5 GHz and 47.9-48.2 GHz bands
2. Recommendation ITU-R F.1820: Power flux-density at international borders for high altitude platform stations (HAPS) providing fixed wireless access services to protect the fixed service in neighbouring countries in the 47.2-47.5 GHz and 47.9-48.2 GHz bands
3. Recommendation ITU-R F.1821: Characteristics of advanced digital high frequency (HF) radiocommunication systems

Danh sách các khuyến nghị bị bãi bỏ:
 
1. Recommendation ITU-R F.283-5: Radio-frequency channel arrangements for low and medium capacity analogue or digital fixed wireless systems operating in the 2 GHz band
2. Recommendation ITU-R F.342-2 Automatic error-correcting system for telegraph signals transmitted over radio circuits
3. Recommendation ITU-R F.345: Telegraph distortion
4. Recommendation ITU-R F.347: Classification of multi-channel radiotelegraph systems for long-range circuits operating at frequencies below about 30 MHz and the designation of the channels in these systems
5. Recommendation ITU-R F.390-4: Definitions of terms and references concerning hypothetical reference circuits and hypothetical reference digital paths for radio-relay systems
6. Recommendation ITU-R F.392: Hypothetical reference circuit for radio-relay systems for telephony using frequency-division multiplex with a capacity of more than 60 telephone channels
7. Recommendation ITU-R F. 393-4: Allowable noise power in the hypothetical reference circuit for radio-relay systems for telephony using frequencydivision multiplex
8. Recommendation ITU-R F.518-1: Single-channel simplex ARQ telegraph system
9. Recommendation ITU-R F.519: Single-channel duplex ARQ telegraph system
10. Recommendation ITU-R F.555-1:Permissible noise in the hypothetical reference circuit of radio-relay systems for television
11. Recommendation ITU-R F.596-1:Interconnection of digital radio-relay systems
12. Recommendation ITU-R F.700-2:Error performance and availability measurement algorithm for digital radio-relay links at the system bit-rate interface
13. Recommendation ITU-R F.745-1:Certain ITU-R Recommendations for analogue radio-relay systems, including those which have been deleted
14. Recommendation ITU-R F.753:Preferred methods and characteristics for the supervision and protection of digital radio-relay systems
15. Recommendation ITU-R F.754:Radio-relay systems in bands 8 and 9 for the provision of telephone trunk connections in rural areas
16. Recommendation ITU-R F.756:TDMA point-to-multipoint systems used as radio concentrators
17. Recommendation ITU-R F.762-2:Main characteristics of remote control and monitoring systems for HF receiving and transmitting stations
18. Recommendation ITU-R F.1104:Requirements for point-to-multipoint radio systems used in the local grade portion of an ISDN connection
19. Recommendation ITU-R F.1241:Performance degradation due to interference from other services sharing the same frequency bands on a primary basis with digital radio-relay systems operating at or above the primary rate and which may form part of the international portion of a 27 500 km hypothetical reference path
20. Recommendation ITU-R F.1331:Performance degradation due to interference from other services sharing the same frequency bands on a primary basis with analogue radio-relay systems for television
21. Recommendation ITU-R F.1398 Performance degradation due to interference from other  ervices sharing the same frequency bands on a primary basis with digital radio-relay systems operating at or above the primary rate and which may form part of the national portion of a 27 500 km hypothetical reference path
 
 
 
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