Information interactive combining method in collaboration multi-point receiving

A technology for information interaction and cooperative nodes, applied in diversity/multi-antenna systems, digital transmission systems, electrical components, etc., can solve problems such as information rate limitation and backhaul burden

Inactive Publication Date: 2009-07-15
SOUTHEAST UNIV
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

However, when the capacity of the communication link between base stations is limited, the rate of information exchanged between them is limited
Especially in the future, the transmission rate of mobi...

Method used

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  • Information interactive combining method in collaboration multi-point receiving
  • Information interactive combining method in collaboration multi-point receiving
  • Information interactive combining method in collaboration multi-point receiving

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Embodiment Construction

[0014] Such as figure 1 shown. A method for information interaction and merging in coordinated multi-point reception of the present invention is characterized in that it comprises the following steps:

[0015] a. Using the main serving node to detect the sending signal of the user corresponding to it, and obtaining the logarithmic bit likelihood ratio of the user corresponding to the main serving node;

[0016] b. Use the coordinating node to obtain the bit information through the hard decision of the logarithmic bit likelihood ratio of the user described in step a, and the coordinating node sends the channel quality of the user corresponding to the main serving node described in step a in its auxiliary node The information is sent to the main service node, and the coordinating node sends the average value of the absolute value of the logarithmic bit likelihood ratio described in step a or the bit information to the main service node;

[0017] c. Pass the bit information and...

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Abstract

The present invention discloses an information alternation combination method in multi-point collaboration receiving, and belongs to the design field of combined receiver in wireless communication. The collaboration point only transmits the bit information and signal-to-noise ratio of hard decision or the signal interference noise ratio after detection or the average value of absolute value of bit likelihood ratio to the master node. The master node firstly reconstructs bit soft information according to the hard decision information of collaboration node, and the signal-to-noise ratio or signal interference noise ratio or the average bit likelihood ratio. Then the soft decision of information is obtained after superposing the soft information itself with the soft information of reconstructed collaboration point. The method can reduce the rate of information alternating between the nodes and can obtain the capability which is better than the selection diversity.

Description

technical field [0001] The invention relates to a method for information interaction and combination in coordinated multi-point reception, which belongs to the design field of joint receivers in wireless communication. Background technique [0002] Coordinated multipoint transmission is a key technology in the long-term evolution of the third generation mobile communication (3GPP LTE). In uplink coordinated multi-point reception, how to effectively exchange soft information among multiple cooperative points is a difficult point. If there is a strong communication link, such as optical fiber, between multiple coordination points, then they can use a more complex joint receiver for joint detection. For example, the multi-point joint reception in the base station in 3GPP LTE may adopt joint detection. However, when the capacity of the communication link between base stations is limited, the rate of information exchanged between them is limited. Especially in the future, the ...

Claims

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Application Information

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IPC IPC(8): H04B7/02H04L1/00
Inventor 王东明尤肖虎高西奇王闻今
Owner SOUTHEAST UNIV
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