Search method and search system for best communication location of multiple mobile relays

A mobile relay and relay communication technology, which is applied in the transmission system, wireless communication, radio transmission system, etc., can solve the communication relay failure, prone to estimation errors, increase the complexity of UAV communication equipment and algorithm complexity And other issues

Active Publication Date: 2016-05-04
安徽童仁智能科技有限公司
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a search method and search system for the optimal position of multi-mobile relays based on variable step size perturbation, aiming to solve the problem of the optimal communicati

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  • Search method and search system for best communication location of multiple mobile relays
  • Search method and search system for best communication location of multiple mobile relays
  • Search method and search system for best communication location of multiple mobile relays

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[0045] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0046] In view of the deficiencies and defects of the existing optimal relay communication position search algorithm for UAVs, namely: (1) UAVs need to obtain ground communication users to use their own GPS function to measure their own positions, but GPS signals are not always available and Relying on the GPS function is vulnerable to attack and interference, resulting in the failure of location search; (2) For ground communication users who do not have GPS function or GPS equipment is damaged, some existing algorithms cannot be used; (3) Compared with airborne multi-antenna Due to the single ante...

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Abstract

The invention is applicable to the field of wireless communication, and provides a search method for the best communication location of multiple mobile relays. The method comprises the following steps: (A) mobile relays receive a training sequence sent by a source end in any position of a fixed orbit, and transmit the training sequence to a destination end; (B) the destination end receives independent fading signals from the mobile relays and performs maximal-ratio combining, and then, generates single-bit information according to the combining result in each time slot and feeds the single-bit information back to all the mobile relays through broadcasting; and (C) the mobile relays record the current location information, perform calculation according to the single-bit information and move according to the calculation result, the method returns to step A, and finally, the best relay communication position is determined. According to the search method provided by the invention, an airborne single antenna is used, there is neither need to rely on GPS nor need to know the location information of a ground communication unit, and the mobile relays can find the best relay communication location within a given movement trajectory range only by use of the bit information fed-back by the destination end.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a search method and a search system for optimal communication positions of multiple mobile relays based on variable step size disturbance. Background technique [0002] Cooperative communication is a rapidly developing technology with great potential. Cooperative communication uses relay and forwarding data to improve the quality of received signals. The performance of the wireless communication system is mainly restricted by the wireless channel. In the real environment, the propagation path between the transmitter and the receiver is very complicated, and the transmitted signal often passes through various fading and multipath propagation to reach the destination. Diversity technology through Signal samples that have undergone independent fading and carry the same information are combined and processed at the destination end, thereby effectively reduc...

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Application Information

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IPC IPC(8): H04W40/22H04W64/00
CPCH04W40/22H04W64/006H04B7/18504
Inventor 谢宁梁远陈敬坤王晖林晓辉
Owner 安徽童仁智能科技有限公司
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