High-altitude unmanned platform communication system and multi-antenna wireless transmission method
An unmanned platform and wireless transmission technology, applied in radio transmission systems, diversity/multi-antenna systems, transmission systems, etc., can solve the problems that users cannot obtain high data rate experience and high cost, and achieve higher computational complexity and higher cost. The effect of communication rate
Active Publication Date: 2022-07-26
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
[0004] For remote areas with low population density and harsh environments, the cost of deploying large-scale infrastructure may be high, making users unable to experience high data rates
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[0034] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0035] like figure 1 As shown, the present invention discloses a high-altitude unmanned platform communication system, specifically an auxiliary multi-antenna communication system for high-altitude unmanned platforms based on non-ideal channel state information (Channel State Information, CSI). The unmanned platform communication system includes a high-altitude unmanned platform equipped with multiple antennas and multiple single-antenna users. transmission of signals.
[0036] like figure 2 As mentioned above, the present invention also discloses a multi-antenna wireless transmission method, which is applied to a high-altitude unmanned platform communication system based on non-ideal channel state information. The multi-antenna wireless tra...
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The present invention provides a high-altitude unmanned platform communication system and a multi-antenna wireless transmission method. The multi-antenna wireless transmission method mainly includes the following steps: a user sends an uplink pilot signal to the high-altitude unmanned platform, and the high-altitude unmanned platform receives and transmits the signal to the high-altitude unmanned platform. The uplink pilot signal sent by the user is used for channel estimation to obtain the non-ideal channel state information value of the user; the users are grouped; using the non-ideal channel state information value of the users in each group, the precoding matrix is calculated and sent, and the Signal transmission. Compared with the prior art, the present invention is suitable for the actual scenarios where users are unevenly distributed and the degree of freedom of space division is insufficient, the communication rate can be significantly improved without increasing the computational complexity, and the multi-antenna communication system is assisted by the high-altitude unmanned platform. development has important practical significance.
Description
technical field [0001] The invention relates to a high-altitude unmanned platform communication system and a multi-antenna wireless transmission method, belonging to the technical field of wireless communication. Background technique [0002] With the rapid development of wireless communication technology, the number of wireless access devices and the amount of transmitted data are increasing explosively. In order to ensure the user's demand for communication rate, the use of multi-antenna technology can increase the system capacity, improve the data transmission rate of the system, reduce the bit error rate and improve the transmission quality of wireless signals without increasing the bandwidth and transmit power. Therefore, multi-antenna technology has become a key technology in wireless communication systems. [0003] High Altitude Platform (HAP) communication system, also known as near space platform communication system or stratospheric communication system, is an eme...
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IPC IPC(8): H04B7/185H04B7/0456H04B7/06H04L25/02
CPCH04B7/18504H04B7/18506H04B7/0456H04B7/0626H04L25/0224
Inventor 张军张晗
Owner NANJING UNIV OF POSTS & TELECOMM