SWIPT method based on OFDM DF bidirectional cooperation

A wireless energy-carrying communication, decoding and forwarding technology, applied in the field of wireless energy-carrying communication for two-way cooperative transmission, to achieve the effect of reducing design complexity

Active Publication Date: 2019-03-01
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0003] Aiming at the defect that the relay node in the existing decoding-and-forwarding two-way cooperative wireless energy-carrying communication method needs to add an additional allocator, the present invention provides an OFDM decoding-forwarding two-way cooperation based on OFDM that effectively reduces the design complexity of the relay node. wireless communication method

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  • SWIPT method based on OFDM DF bidirectional cooperation
  • SWIPT method based on OFDM DF bidirectional cooperation
  • SWIPT method based on OFDM DF bidirectional cooperation

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with the accompanying drawings.

[0041] refer to figure 1 and figure 2 , a wireless energy-carrying communication method based on OFDM decoding and forwarding two-way cooperation, which is realized based on an existing wireless communication system, and the wireless energy-carrying communication system consists of two source nodes S 1 and S 2 and relay nodes R, S 1 → R link and S 2 → The entire bandwidth of the R link is divided into K subcarriers, and the transmission time is divided into two equal time slots.

[0042] In the method of this embodiment, in the first time slot, the source node S 1 and S 2 Send information to the relay node R, the relay node uses a part of the subcarriers to decode the information, and uses the rest of the subcarriers to collect energy; in the second time slot, the relay node uses the energy it collects to use all the subcarriers to forward the source node S 1 a...

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Abstract

An SWIPT (Simultaneous Wireless Information and Power Transfer) method based on OFDM (Orthogonal Frequency Division Multiplexing) DF (Decode-and-Forward) bidirectional cooperation is provided. In theSWIPT method, information is transmitted to a relay node by two source nodes, a part of subcarriers are utilized by the relay node to receive the information, and the rest of the subcarriers are utilized to collect energy, then the information of the source nodes is forwarded through adoption of the whole energy collected by the relay node, in this way, the relay node only needs to know which subcarriers are used for information receiving and which subcarriers are used for energy receiving, i.e., the relay node only needs to know the sequence numbers of the subcarriers used for information receiving and energy receiving without adding a distributor, therefore, the SWIPT method of the invention has the beneficial effects of effectively reducing design complexity of equipment and improving an energy efficiency of a wireless communication system.

Description

technical field [0001] The invention belongs to the technical field of wireless energy-carrying communication in the field of wireless communication, and relates to a wireless energy-carrying communication method for two-way cooperative transmission. Background technique [0002] Wireless energy-carrying communication technology not only realizes efficient and reliable information communication, but also makes full use of precious energy resources by receiving radio frequency signals in the surrounding environment and collecting energy while acquiring information. Cooperative relay technology helps to forward information through relay nodes, which can effectively extend the communication transmission distance and improve the stability of the wireless communication system. The energy-carrying communication technology based on two-way cooperative relay can enable the relay node to receive information and energy by receiving the wireless signal of the source node, and then use ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04L27/26H04B17/382
CPCH04L27/2611H04B17/382H04L27/2602H04W72/0446H04W72/0453Y02D30/70
Inventor 卢为党赵伟琳斯沛远方善祯彭宏张昱
Owner ZHEJIANG UNIV OF TECH
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