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High efficiency resource distribution method supporting information and energy simultaneous transmission

A technology that supports information and resource allocation, applied in the field of wireless communication, can solve problems such as high time cost, and achieve the effect of avoiding consumption and high spectrum utilization

Active Publication Date: 2017-10-10
NANJING UNIV
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Problems solved by technology

[0004] With the development of wireless energy and information simultaneous transmission technology, OFDM is facing new challenges. In order to obtain better system performance under a large number of subcarriers and users, it needs to pay a super high time cost. Obviously, this is different from the current high-speed communication. requirements are contradictory

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  • High efficiency resource distribution method supporting information and energy simultaneous transmission
  • High efficiency resource distribution method supporting information and energy simultaneous transmission
  • High efficiency resource distribution method supporting information and energy simultaneous transmission

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Embodiment Construction

[0027] The invention discloses an efficient resource allocation method supporting simultaneous transmission of information and energy, which is suitable for maximizing throughput under the condition of energy constraints in a multi-user Orthogonal Frequency Division Multiplexing (OFDM: Orthogonal Frequency Division Multiplexing) system Efficient resource allocation algorithm. The system model includes a transmitting base station and a multi-user receiver, wherein the base station adopts an omnidirectional antenna transmission mode, the energy acquisition module adopts an omnidirectional energy acquisition mode, and the information receiving module adopts a receiving and directional receiving mode (fixed decoding on a designated subcarrier information data). Here, the simulated base station adopts the method of average power distribution to transmit. The transmission power on each subcarrier is the same, and each subcarrier can and can only be allocated to one user. Due to the ...

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Abstract

The invention discloses a high efficiency resource distribution method supporting information and energy simultaneous transmission; the method comprises the following steps: a base station emits pilot signals to users, and the users estimate channel state information and return the information to the base station; the base station calculates subcarrier distribution factors according to the channel state information, and evenly distributes power rates on the subcarriers; the base station informs the distribution method to the users, the users decode information from the distributed subcarriers, and energy can be collected from undistributed subcarriers. The method allows the system to obtain the maximum total throughput while satisfying the minimum energy collection threshold of each user.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to an efficient resource allocation method supporting simultaneous transmission of information and energy. Background technique [0002] With the progress of society and the development of science and technology, various mobile communication devices are also changing with each passing day, and more and more have entered people's daily life. Wireless communication is a communication method for information exchange, which is realized based on the characteristic that electromagnetic waves can propagate in the space of wireless transmission lines. The wireless energy collection and information simultaneous transmission system has improved the utilization efficiency of electromagnetic energy on the basis of adhering to the traditional communication principle, and provided users with permanent and stable energy supply to a certain extent, so it has developed rapidly in re...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04W72/04H04W72/08H04L27/26
CPCH04L5/0044H04L5/0058H04L27/2601H04W72/0453H04W72/0473H04W72/54Y02D30/70
Inventor 唐岚吴双
Owner NANJING UNIV
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