Channel allocation and power control method for uplink multi-beam satellite
A technology of channel allocation and power control, applied in the field of satellite communication, can solve the problem of inability to find the optimal solution, high computational complexity of heuristic algorithm, and achieve the effect of maximizing system capacity
Active Publication Date: 2020-05-26
KEYIDEA SATCOM INFORMATION TECH (NANJING) CO LTD +1
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[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0027] Such as figure 1 As shown, it is easy to understand the multi-beam satellite communication system, and its content is a schematic diagram of the multi-beam satellite uplink, including the transmission link and the interference link;
[0028] The present invention provides a method for channel allocation and power control of an uplink multi-beam satellite, comprising the following steps:
[0029] S1. A game design is proposed. The game design includes designing the uplink multi-beam satellite system model and designing the utility function of each participant;
[0030] The uplink multi-beam satellite system model is designed as follows: Suppose a multi-beam satellite has L beams, expressed as L={1,2,L,L}, and the user set in each beam is N={1,2,L, N}, with N l Denotes all users in beam l, and has ∑N l =N; the total satellite uplink bandwidth is set ...
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The invention relates to the field of satellite communication. The invention discloses a channel allocation and power control method of an uplink multi-beam satellite. The problems that in prior art,channel allocation and power control cannot be effectively conducted on satellites, so that co-channel interference is large, and total capacity of system is small are solved. According to the technical scheme, the method is characterized by comprising the steps of S1 providing a game design, wherein the game design comprises the steps that an uplink multi-beam satellite system model is designed,and a utility function of each participant is designed; S2 proving that the game is designed as a potential energy game, proving that a potential energy function of the potential energy game is equivalent to the system capacity, and proving that an optimal solution or a suboptimal solution of the potential energy function is the optimal solution or the suboptimal solution of the system capacity; and S3 calculating a Nash equilibrium solution of the potential energy game, and performing optimal channel allocation and power control on the uplink multi-beam satellite, thereby achieving the purposes of reducing co-channel interference and increasing the total capacity of the system.
Description
technical field [0001] The invention relates to the field of satellite communication, more specifically, it relates to a channel allocation and power control method for uplink multi-beam satellites. Background technique [0002] Due to the wide coverage of satellite communication systems, satellite-based shipping systems are widely used for long-distance ship communication. With higher rate data services and the increasing number of satellites, higher frequency spectrum has been occupied, resulting in insufficient frequency spectrum. In order to improve spectrum utilization, a multi-beam satellite communication system that can improve spectrum utilization has also received widespread attention in the industry. [0003] In a multi-beam satellite communication system, each beam covers a specific range, but there is some competition among the same satellite beams. When multi-beam satellites adopt full-band multiplexing, users between adjacent beams often have serious co-chann...
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IPC IPC(8): H04B7/185
CPCH04B7/18519Y02D30/70
Inventor 史焱李江华齐东元贾跃伟
Owner KEYIDEA SATCOM INFORMATION TECH (NANJING) CO LTD