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Green cognition wireless system resource distribution method of OFDM signal

A cognitive wireless and system resource technology, applied in the field of green cognitive wireless system resource allocation, can solve the problems of poor system energy efficiency and high EPG interruption index

Active Publication Date: 2015-07-01
南京黑甲智能科技有限公司
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AI Technical Summary

Problems solved by technology

The EPG outage index obtained by the resource allocation method of the green cognitive wireless system in the prior art is relatively high, and the energy efficiency of the system is poor

Method used

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  • Green cognition wireless system resource distribution method of OFDM signal
  • Green cognition wireless system resource distribution method of OFDM signal
  • Green cognition wireless system resource distribution method of OFDM signal

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Embodiment Construction

[0027] The technical solution of the present invention will be further elaborated below in conjunction with the accompanying drawings.

[0028] The model of the green cognitive wireless system of the present invention is as figure 1 As shown, it includes a primary user transmitter (PT), a secondary user receiver (SR), a primary user receiver (PR) and a secondary user transmitter (ST). where, the fading channel parameter between PT and SR is h psi , the fading channel parameter between TR and ST is h spi , the fading channel parameter between SR and ST is h si , and the corresponding modular squares are:

[0029] γ psi =|h psi | 2 ,γ spi =|h spi | 2 ,γ si =|h si | 2 (1)

[0030] In order to maximize the transmission rate and minimize the transmission power during pilot-aided channel estimation, and obtain a method to reduce the energy consumption associated with pilot signal transmission and the total energy of OFDM symbols, the relationship between the pilot de...

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Abstract

The invention discloses a green n cognition wireless system resource distribution method of an OFDM signal. The method is that the variational principle is utilized to perform the optimal analysis for the ratio of the transmission power to the transmission rate, so that the EPG failure index can be reduced; the pilot frequency density and the distributed energy can be optimally balanced, so as to effectively distribute the system resource by an energy saving manner.

Description

technical field [0001] The invention relates to resource allocation of a cognitive wireless system, in particular to a resource allocation method of a green cognitive wireless system of OFDM signals. Background technique [0002] In the historical process of promoting the "green world", green communication has inevitably become one of the main contributors. The concept of green communication requires reducing communication power consumption and improving transmission efficiency. In mobile communication systems based on OFDM technology, although the transmitted pilot signal is of great significance to channel estimation, it does not carry information, which can be regarded as a waste of system power resources to a certain extent. Therefore, a proper balance between the system performance requirements and the energy efficiency of data transmission is in line with the requirements of green mobile communication, and cognitive radio technology can be the way to realize it. In c...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04L27/26
CPCH04L5/003H04L5/0064H04L27/2601
Inventor 毛明禾曹宁陈晓阳叶玉昌胡一帆
Owner 南京黑甲智能科技有限公司
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