Multiple-address access method based on processing on LEO satellite multi-beam reception satellite
An access method and satellite reception technology, applied in the multi-frequency code system, modulated carrier system, radio transmission system, etc., can solve the problem of affecting the complexity of multiple access signal processing, affecting the overall performance of the system, increasing the processing complexity, etc. problems, to achieve the effect of large system user capacity, high processing complexity, and reduced development costs
Active Publication Date: 2015-02-25
上海中科辰新卫星技术有限公司
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Problems solved by technology
[0007] The advantages and disadvantages of the multiple access method, on the one hand, affect the overall performance of the system, and also directly affect the complexity of the multiple access signal processing at the transmitter and receiver
The use of satellite-borne multi-beam receiving antennas will introduce multi-channel on-board processing characteristics, and continuing to use the traditional CDMA access method will increase the complexity of processing due to the introduction of multiple channels. This is for LEO satellites with limited resources. often unacceptable
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[0020] The specific implementation of the multiple access method based on LEO satellite multi-beam receiving on-board processing provided by the present invention will be described in detail below in conjunction with the accompanying drawings.
[0021] see figure 1 As shown, a multiple access method based on LEO satellite multi-beam receiving on-board processing, this method is suitable for the multi-user of the LEO satellite communication system using the satellite-borne multi-beam receiving antenna and on-board receiving processing technology (that is, ground transmission end) the design of uplink transmitting communication signal (referred to as uplink signal) and the design of the processing method of the satellite receiving end, wherein the satellite-borne multi-beam receiving antenna means that a satellite receiving end uses a multi-beam antenna when receiving signals, and the on-board receiving processing Technology refers to the down-conversion, filtering, amplificatio...
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The invention discloses a multiple-address access method based on processing on an LEO satellite multi-beam reception satellite. The method comprises the following steps that (1), the land launching end divides an uplink signal to be transmitted to the satellite receiving end into an uplink guiding section and an uplink service section according to the time sequence; (2), the uplink guiding section guides the uplink service section through an SAMA mode to start transmitting, assists the satellite receiving end in capturing the uplink signal, and guides mediation of service data of the uplink service section after the satellite receiving end captures the uplink signal; (3), the uplink service section transmits the service data through a CDMA mode. According to the method, it can be ensured that the system access performance is good, the number of signal capture modules needed by processing on the multi-beam reception satellite can be reduced, and therefore the complexity of multi-beam receiving processing on the satellite can be effectively reduced.
Description
technical field [0001] The invention relates to the field of wireless communication, in particular to a multiple access method based on LEO satellite multi-beam receiving on-board processing. Background technique [0002] Wireless communication means that at least one of the communication parties exchanges and transmits information wirelessly. It is one of the most active fields of science and technology development in the world today, and plays a decisive role in social progress and economic development. Among them, satellite communication is an important field of wireless communication, especially in areas where major and devastating natural disasters occur, the ground network is destroyed, and satellite communication may be the only surviving means of communication. [0003] Compared with communication systems based on GEO (Geostationary Earth Orbit) and MEO (Medium Earth orbit) satellites, LEO (Low Earth Orbit, Low Earth Orbit) satellite communication systems have the in...
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Login to View More IPC IPC(8): H04B7/185H04L27/26
CPCH04B7/18513H04L27/2601
Inventor 姜泉江刘会杰于炀姜兴龙
Owner 上海中科辰新卫星技术有限公司