Linear search method of joint allocation of channel bandwidth and power in non-orthogonal multiple access link

Abstract

The invention provides a linear search method of joint allocation of channel bandwidth and power in a non-orthogonal multiple access link. The method comprises the following steps: 1) providing, by abase station, data flow service for a mobile user through the non-orthogonal multiple access technology; 2) analyzing system characteristics to equivalently transform a problem; and 3) designing an efficient algorithm solution according to the characteristics of the finally converted problem, and finally substituting an output result of the algorithm to a top layer problem to obtain an optimal bandwidth and power allocation value. The invention provides a feasible and efficient optimization method that not only guarantees the data demand of mobile users, but also minimizes the total system resource consumption, so as to improve the utilization rate of system resources and optimize the configuration of system resources.

Description

technical field [0001] The invention relates to a linear search method based on bandwidth and power joint allocation of a downlink non-orthogonal multiple access (NOMA) system in a wireless network. Background technique [0002] In order to obtain high spectrum efficiency and large-scale connection in the fifth generation mobile communication technology, Non-Orthogonal Multiple Access (NOMA) technology was proposed, which is different from the traditional Orthogonal Multiple Access (Orthogonal Multiple Access) technology. Multiple Access (OMA) technology is different. NOMA can serve more users through non-orthogonal resource allocation. By enabling a large number of users to share the same frequency channel at the same time and using the continuous interference cancellation mechanism (Successive Interference Cancellation, SIC) to eliminate co-channel interference, the spectrum can be significantly improved. efficiency. Therefore, NOMA fits well with the ultimate goal of fut...

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Problems solved by technology

[0003] In order to overcome the shortcomings of the existing orthogonal multiple access technology that does not carry out joint consideration of bandwidth and power and consumes large resources, the present invention provides a linear search method for joint allocation of channel bandwidth and power in non-orthogonal multiple access links The method uses NOMA technology to transmit data in the wireless cellular network, considers the bandwidth and power jointly, and realizes the minimum resource consumption in the system under the premise of meeting the data flow requirements of all MUs

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