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Resource allocation method for maximizing spectrum efficiency in terahertz communication system

A spectrum efficiency and communication system technology, applied in the field of resource allocation to maximize spectrum efficiency, to achieve reasonable allocation and high system spectrum efficiency

Active Publication Date: 2021-11-05
SOUTHEAST UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide a resource allocation method for maximizing spectrum efficiency in a terahertz communication system to solve the technical problem of maximizing system spectrum efficiency in the terahertz frequency band and obtaining an optimal resource allocation scheme

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  • Resource allocation method for maximizing spectrum efficiency in terahertz communication system
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  • Resource allocation method for maximizing spectrum efficiency in terahertz communication system

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[0017] In order to better understand the purpose, structure and function of the present invention, a resource allocation method for maximizing spectrum efficiency in a terahertz communication system of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0018] Such as figure 1 As shown, in the terahertz indoor downlink communication network architecture, there is one access point (Access point, AP) and K users, and the total system bandwidth is B t , divided into N subbands on average, and the bandwidth of each subband is B=B total / N. According to the network status, the maximum transmission power of the system P max , while ensuring that each user achieves the minimum data rate R min Under the constraints of , the resource allocation method that maximizes the system spectrum efficiency is adopted to allocate subbands to appropriate users and allocate appropriate power to corresponding subbands. Wherein, each su...

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Abstract

The invention provides a resource allocation method for maximizing system spectrum efficiency in a terahertz communication system. The method comprises the steps of firstly, on the basis of a channel model of a terahertz indoor communication system, establishing a joint optimization problem of sub-band allocation and power allocation under the constraint of the lowest rate of a user by taking maximization of spectrum efficiency as a target; secondly, based on a decomposition theory, decomposing a joint optimization problem into two sub-problems of sub-band distribution and power distribution; and allocating sub-bands based on a long user use center window principle and a bipartite graph matching method Hungary algorithm, and then performing power optimization by using a sequential quadratic programming algorithm to obtain a final sub-band allocation and power optimization result. According to the resource allocation method, higher system spectrum efficiency can be achieved by utilizing the characteristics of terahertz communication.

Description

technical field [0001] The invention belongs to the communication field, and in particular relates to a resource allocation method for maximizing spectrum efficiency in a terahertz communication system. Background technique [0002] Terahertz (THz) communication has broad application prospects due to its huge bandwidth and ultra-high data transmission rate, and has become one of the high-profile technologies in the sixth generation (6G) mobile communication network, which can be applied to wireless personal area networks. (WPAN), wireless local area network (WLAN), indoor cellular network, outdoor backhaul communication, nanocommunication and space communication and other scenarios. However, there are some limitations in terahertz communication. The huge free space loss and the path loss caused by the absorption of water vapor molecules limit the communication distance. In addition, the presence of path loss peaks creates spectral windows, making terahertz spectrum highly f...

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Application Information

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IPC IPC(8): H04B17/382H04B17/391H04B10/90
CPCH04B17/382H04B17/391H04B10/90
Inventor 燕锋朱璠书夏玮玮沈连丰胡静宋铁成
Owner SOUTHEAST UNIV
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