KR950022255A - Link design method of low speed data earth station (VSAT) for satellite communication - Google Patents

Link design method of low speed data earth station (VSAT) for satellite communication Download PDF

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Publication number
KR950022255A
KR950022255A KR1019930030904A KR930030904A KR950022255A KR 950022255 A KR950022255 A KR 950022255A KR 1019930030904 A KR1019930030904 A KR 1019930030904A KR 930030904 A KR930030904 A KR 930030904A KR 950022255 A KR950022255 A KR 950022255A
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South Korea
Prior art keywords
carrier
noise ratio
downlink
earth station
uplink
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KR1019930030904A
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Korean (ko)
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KR960014677B1 (en
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장대익
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양승택
재단법인 한국전자통신연구소
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/19—Earth-synchronous stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)

Abstract

본 발명은 통신위성을 이용하는 저속데이타 전용지구국(VSAT, Very Small Aperature Terminal)시스템의 지구국의 전송제원을 설정하기 위한 링크설계로 시스템을 구현하기 이전 상요할 통싱위서의 규격, 사용할 지역및 공간상의 특성 그리고 시스템의 성격에 따라 지구국 안테나의 크기 및 HPA출력의 크기를 결정하고, 통신시의 성능을 분석하여 최적의 링크설계를 구현하는데 이용으로 중심지구국과 단말지구국의 안테나 크기를 쉽게 구할 수 있고 중심지구국과 단말지구국의 HPA출력 크기가 자동으로 계산되며 설계하는 VSAT망이 위성중계기에서 점유하는 대역폭 및 사용된 TWTA출력의 비율을 자동으로 계산하기 때문에 위성중계기의 사용되지 않은 부분을 다른 용도로 사용할 때 사용할 수 있는 대역폭 및 TWTA출력의 크기에 대한 정보을 제공, 및 시스템과 링크상의 각종 파라미터와 손실 및 잡음들을 우리나라의 환경에 맞게 변형하였으며, 지구국 안테나 크기을 쉽게 결정할수 있게 하고 지구국 HPA출력크기를 자동으로 계산되도록 하여 누구나 쉽게 링크 설계를 할 수 있도록 하는 효과가 있다.The present invention is a link design for establishing transmission specifications of earth stations of a VSAT (Very Small Aperature Terminal) system using a communication satellite. The antenna size of the earth station and the terminal earth station can be easily obtained by determining the size of the earth station antenna and the size of the HPA output according to the characteristics of the system, and analyzing the performance in communication to implement the optimal link design. The HPA output size of the terminal and the terminal earth station is automatically calculated and the design VSAT network automatically calculates the ratio of the bandwidth occupied by the satellite repeater and the used TWTA output, so that the unused portion of the satellite repeater can be used for other purposes. Provide information about the available bandwidth and size of the TWTA output, and on the system and link Were the various parameters and the loss and noise variations according to the country of the environment, much easier to determine the earth station antenna and magnitude to ensure that automatically calculates the earth station HPA output size has the effect of anyone to easily link design.

Description

위성통신용 저속데이타 전용 지구국(VSAT)의 링크 설계 방법Link design method of low speed data earth station (VSAT) for satellite communication

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제4도는 본 발명에 의한 위성통신을 저속데이타 전용지구국의 링크설계.4 is a link design of a low-speed data dedicated earth station for satellite communication according to the present invention.

제5도는 본 발명에 의한 상향링크의 출력을 제어한 링크설계.5 is a link design for controlling the output of the uplink according to the present invention.

제6도는 본 발명에 의한 상향링크의 출력제어와 안테나 추적 시스템(Antenna Tracking System)을 부착한 링크설계.6 is a link design of an uplink output control and an antenna tracking system according to the present invention.

Claims (3)

송신기 전송로상에서 발생하는 손실(33)과 캐리어당 지구국EIRP(33)로부터 상향링크 캐리어 대 잡음비 (34)를 구한다음 각종 간섭에 대한 상향링크 캐리어 대 간섭비들을 구하고(34), 상기 구한값들로 부터 총 캐리어 대 잡음비를 구하는 제1단계, 지국구으로부터 수신시 전송로상에서 발생하는 손실(36)과 캐리어당 위성중계기EIRP(44) 그리고수신 지구국으 제원(36)으로부터 하향 링크 캐리어대 잡음비 (37)을 구한다음 각종 간섭에 대한 하향 링크 캐리어 대 간섭디들을 구하고(37), 상기 구한 값들로부터 총 캐리어 대 잡음비를 구하는 제2단계, 링크 설계의 결과인 링크 마진을 구하기 위해 상향링크와 하향링크로부터 계산된 캐리어 대 잡음비 그리고 위성 중계기의 백오프로부터 산출한 캐리어 대 혼변조 잡음으로 부터 총 캐리어 대 잡음비(38)를 계산한 다음 요구 캐리어 대 잡음비와의 차이에 의해서 링크 마진(30)을 구하는 제3단계, 및 상기 상·하향링크의 캐리어 대 잡음비와 캐리어 대 혼변조 잡음비에 의한 총 캐리어 대 잡음비값이 최대가 되는 지점에서 백오프값을 결정하는 제4단계를 구비하고 있는 것을 특징으로 하는 링크 설계 방법.The uplink carrier-to-noise ratio 34 is obtained from the loss 33 occurring on the transmitter transmission path and the earth station EIRP 33 per carrier, and then the uplink carrier-to-interference ratios for various interferences are obtained (34). In the first step to obtain the total carrier-to-noise ratio from, the loss (36) incurred on the transmission path upon reception from the station and the downlink carrier-to-noise ratio from the satellite repeater EIRP (44) per receiver and the receiver (36) 37), the second step of obtaining downlink carrier-to-interferences for various interferences (37), and a second step of calculating the total carrier-to-noise ratio from the obtained values, uplink and downlink to obtain the link margin that is the result of the link design. Calculate the total carrier-to-noise ratio (38) from the carrier-to-noise ratio calculated from and the carrier-to-modulation noise from the backoff of the satellite repeater. The third step of obtaining the link margin 30 by the difference between the old carrier and the noise ratio, and at the point where the total carrier-to-noise ratio value due to the carrier-to-noise ratio and the carrier-to-modulation noise ratio of the uplink and downlink becomes the maximum And a fourth step of determining an off value. 제1항에 있어서, 강우시에도 규정된 성능을 만족하는 시스템을 구현하기 위해 상기 제1단계에서의 상향 링크 설계에서 캐리어당 지구국 ,EIRP를 결정할 때 강우에 의한 상.하향 링크 손실을 보상하고(51),상기 제2단계의 하향 링크 설계에서 캐리어당 위성 EIRP를 결정할 때 강우에 의한 하향 링크 손실을 보상(52)하도록 구성되어 있는 것을 특징으로 하는 링크 설계 방법.The method according to claim 1, wherein the uplink and downlink loss caused by the rainfall is compensated for when determining the earth station per carrier in the uplink design in the first step in order to implement a system that satisfies the specified performance even during the rain ( 51), The link design method, characterized in that configured to compensate (52) downlink loss due to rainfall when determining the satellite EIRP per carrier in the downlink design of the second step. 제1항에 있어서, 안테나 포인팅 손실을 보상하기 위해 상향링크시 안테나 크기에 따른 포인팅 손실을 보상하고(61), 하향 링크시에도 하향링크의 포인팅 손실을 보상하도록 한 (62)것을 특징으로 하는 링크 설계 방법.The method of claim 1, wherein the link loss is compensated for according to the antenna size in the uplink to compensate for the antenna pointing loss (61), and the downlink pointing loss is compensated for in the downlink (62). Design method. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930030904A 1993-12-29 1993-12-29 Satellite telecommunication KR960014677B1 (en)

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KR1019930030904A KR960014677B1 (en) 1993-12-29 1993-12-29 Satellite telecommunication

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KR1019930030904A KR960014677B1 (en) 1993-12-29 1993-12-29 Satellite telecommunication

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KR960014677B1 KR960014677B1 (en) 1996-10-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100496232B1 (en) * 1996-07-17 2005-09-30 제너럴 일렉트릭 캄파니 Satellite communications system utilizing parallel concatenated coding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100496232B1 (en) * 1996-07-17 2005-09-30 제너럴 일렉트릭 캄파니 Satellite communications system utilizing parallel concatenated coding

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