A power allocation method for cognitive radio network based on NOMA technology

A technology of cognitive radio and allocation method, applied in the field of power allocation of cognitive radio network, can solve the problems of affecting the communication quality of the system, small signal-to-noise ratio of secondary users, affecting the communication of primary users, etc., so as to improve the system throughput. Effect

Active Publication Date: 2018-12-11
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0003] However, in such a communication method, because the sensing base station will interfere with the primary user, the sensing base station must make the above interference less than the interference threshold, so as not to affect the communication of the p

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  • A power allocation method for cognitive radio network based on NOMA technology
  • A power allocation method for cognitive radio network based on NOMA technology
  • A power allocation method for cognitive radio network based on NOMA technology

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[0031] 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.

[0032] The present invention proposes that on the basis that the secondary user meets the minimum transmission rate requirement, by dynamically adjusting the power allocation factor to control the power of the sensing base station and the relay, the throughput of the secondary user can be effectively improved.

[0033] Such as Figure 1 to Figure 2 As shown, an embodiment of the present invention provides a flow chart of a method for power allocation in a NOMA technology-based cognitive radio network based on a non-orthogonal multiple access technology and an implementation system model diagram thereof. The method includes the following steps:

[0034] Step 1: Establish the downlink model of the cognitive radio network in the Underlay spectrum sharing ...

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Abstract

The invention discloses a power distribution method of a cognitive radio network based on NOMA technology. The method is carried out according to the following steps: 1) establishing a system model and analyzing the communication situation of a secondary user in an edge region; 2) establishing an objective optimization model; 3) solving the objective optimization problem to optimize the maximum information transmission rate of the secondary users and the transmission power of the primary user base station. The objective function proposed by the invention is a standard convex optimization problem and can be directly solved. The invention can study the optimal power distribution problem between the secondary user transmitting end and the relay node on the premise of ensuring the communication quality of the primary user, so as to realize the maximization of the throughput of the secondary user.

Description

Technical field [0001] The present invention relates to the field of wireless communication, in particular to a method for power allocation of a cognitive radio network based on a non-orthogonal multiple access technology. Background technique [0002] Both non-orthogonal multiple access technology (NOMA) and cognitive radio technology can effectively improve the spectrum efficiency and user transmission rate. With the rapid development of mobile communications, the amount of wireless data traffic has exploded, which requires a wireless network with higher spectrum efficiency and faster speed to meet transmission requirements. Applying non-orthogonal multiple access technology (NOMA) to cognitive radio networks in the Underlay spectrum sharing mode can greatly improve the system throughput and spectrum efficiency. [0003] However, in such a communication mode, because the sensing base station will cause interference to the primary user, the sensing base station must make the inte...

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Application Information

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IPC IPC(8): H04W16/14H04W52/24H04W72/04H04W72/08
CPCH04W16/14H04W52/241H04W72/0473H04W72/541Y02D30/70
Inventor 潘甦汤嘉诚
Owner NANJING UNIV OF POSTS & TELECOMM
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