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System and method for combining relay selection and power distribution

A power and relay node technology, applied in relay system monitoring, power management, transmission system and other directions to maximize system throughput

Inactive Publication Date: 2011-10-19
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0010] Aiming at the shortcomings of the existing technology, the present invention proposes a system and method for joint relay selection and power allocation in order to solve the problem that there is no joint application of cognitive radio and wireless relay in the prior art, by selecting the optimal Multi-hop relay links, and allocate appropriate transmit power to each relay node, so as to achieve the goal of maximizing system throughput when the total transmit power of the system does not exceed a certain threshold

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Embodiment Construction

[0059] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0060] The present invention proposes a system and method for joint relay selection and power allocation applied in a multi-hop cognitive wireless network, which solves the problem of relay selection and power allocation in a multi-hop cognitive wireless network to achieve The goal of maximizing the throughput of the system as much as possible under the premise of a certain transmit power constraint is to optimize the overall system performance.

[00...

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Abstract

The invention relates to the technical filed of wireless communication, and provides a system and method for combining relay selection and power distribution, and is used for solving the problem that the combined application of cognitive radio and wireless relay does not exist in the prior art. Through selecting optimal multi-hop relay links, and distributing proper transmitted power to each relay node, the throughput maximized target of the system is realized under the condition that the total transmitted power of the system does not exceed certain threshold value.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a system and method for joint relay selection and power allocation. Background technique [0002] With the continuous emergence of various new wireless communication technologies, the rise of various wireless services, and the emergence of a large number of new-generation broadband wireless networks (such as LTE-A and WiMAX), the problem of shortage of spectrum resources is becoming more and more serious. At present, the radio frequency spectrum is assigned to different networks in a fixed manner (that is, the authorized frequency band), which is planned and managed by the country. A large number of measurement results show that this method of fixed spectrum authorization allocation and use leads to a large amount of traffic carried by some frequency bands and serious congestion; in contrast, the spectrum usage efficiency of some frequency bands is extremely low, resulting i...

Claims

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Application Information

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IPC IPC(8): H04W16/14H04W52/30H04W52/46H04B17/00H04B17/40
Inventor 冯志勇张平陈翼翼陈鑫王勋谢锋林
Owner BEIJING UNIV OF POSTS & TELECOMM
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