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Power distribution mechanism for decode-and-forward relay system

A decoding forwarding and relay system technology, applied in the field of power allocation mechanism, can solve the problem of unknown interference channel capacity domain, etc., and achieve the effect of improving sum rate or multiplexing gain

Inactive Publication Date: 2011-09-14
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

In the past 30 years, the problem of the capacity domain of the interference channel (IC) has been widely concerned. Although the capacity domain of the corresponding channel can be known in a specific interference situation, the capacity domain of the interference channel in a broader sense still unknown

Method used

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  • Power distribution mechanism for decode-and-forward relay system
  • Power distribution mechanism for decode-and-forward relay system
  • Power distribution mechanism for decode-and-forward relay system

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Embodiment Construction

[0010] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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.

[0011] figure 1 Flow chart of the power allocation mechanism for the decode-and-forward relay system. In a decoding-and-forwarding relay system, the sender S i (i=1, 2, ...) to the receiving end D respectively i (i=1, 2, . . . ) and the relay R sends signals, and the relay adopts a strategy of decoding and forwarding. When the sender S i...

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Abstract

The invention provides a power distribution mechanism for a decode-and-forward relay system. The decode-and-forward relay system comprises i sending ends, i receiving ends and a relay R. The sending ends Si (i is equal to 1, 2, ...) respectively send two parts of information, wherein each part of the sending information is limited by the corresponding sending power; and the relay R receives and decodes the information and transfers the information to the receiving ends Di (i is equal to 1, 2, ...), and the information is limited by the sending power of the relay R. The power distribution mechanism of the invention distributes an index to the sending power of each part of the information in the decode-and-forward relay system, so that the power of each part is an index function of the total power and corresponds to a power index distribution factor; and the power index distribution factor in the method is used for representing the speed rate and multiplexing gain of the decode-and-forward relay system so as to simplify the analysis of the decode-and-forward relay system. According to the characteristics of the actual system, the corresponding power index distribution factor is improved so that the speed rate or the multiplexing gain of the system is improved.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a power allocation mechanism for a decoding and forwarding relay system. Background technique [0002] Wireless communication systems are generally interference limited. In the past 30 years, the problem of the capacity domain of the interference channel (IC) has been widely concerned. Although the capacity domain of the corresponding channel can be known in a specific interference situation, the capacity domain of the interference channel in a broader sense Still unknown. Adding a relay to the interference channel can improve the quality and reliability of the signal at the receiving end. At this time, an interference channel with relay (ICR) is formed. In the relay system, the relay usually has three transmission strategies: one is amplify-and-forward (AF), under this strategy, the relay amplifies the signal from the sender, and then directly forwards it to Th...

Claims

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Application Information

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IPC IPC(8): H04W52/18H04W72/04H04L1/00
Inventor 张天魁王巍赵嵩曾志民
Owner BEIJING UNIV OF POSTS & TELECOMM
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