An Estimated Forwarding Method for Full-duplex Traffic Cooperative Communication Network

A technology for cooperative communication and transportation, applied in the direction of shaping network, digital transmission system, baseband system components in the transmitter/receiver, etc., can solve the problem of wrong propagation destination node, etc., and achieve the effect of reducing the bit error rate

Active Publication Date: 2019-03-19
QINGDAO ACADEMY OF INTELLIGENT IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage of the decoding and forwarding method is that once the relay node decodes incorrectly, it will cause the error to propagate to the destination node.

Method used

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  • An Estimated Forwarding Method for Full-duplex Traffic Cooperative Communication Network
  • An Estimated Forwarding Method for Full-duplex Traffic Cooperative Communication Network
  • An Estimated Forwarding Method for Full-duplex Traffic Cooperative Communication Network

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Embodiment 1

[0044] like figure 1 As shown, in the full-duplex traffic cooperative communication network system, it is assumed that there are two terminal vehicle nodes and multiple relay nodes. Two end nodes exchange information through these relay nodes.

[0045] The following is an example of the case where there is only one relay node in the network, such as figure 2 shown. Suppose there are two terminal nodes (T 1 and T 2 ), with N T1 ≥1 and root N T2 ≥1 antenna; the relay node is denoted by R, with N r ≥1 antenna. Two end nodes exchange information through relay nodes. In the first slot, the two terminal nodes T 1 and T 2 Simultaneously emit signal x 1 and x 2 to the relay node, the signal r received by the relay node can be expressed as:

[0046] r=H 1 x 1 +G 1 x 2 +n ⑴

[0047] Here, H 1 and G 1 represent T respectively 1 and R and T 2 Multi-antenna or single-antenna channel between R and R, n is the channel noise.

[0048] In the second time slot, the relay n...

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Abstract

The present invention provides an estimation and forwarding method of a full-duplex traffic cooperative communication network, which includes the following steps: Step 1, establishing a traffic cooperative communication network composed of multiple nodes, each node can be used as a relay node to assist the source node to transmit signals to Destination node; step 2, after the relay node receives the transmission signal, the relay node uses the Unconstrained minimum mean square error algorithm to obtain the estimated soft information of the transmission signal; step 3, normalize the transmission power on the relay node Step 4: The relay node sends the soft information obtained in Step 2 to the destination node; Step 5: After receiving the forwarding information, the destination node uses the Generalized spherical detection algorithm to detect the signal. In the estimated forwarding method of the present invention, the relay node forwards a simple estimated value of the received signal to the destination node, thereby obtaining better performance than the amplification forwarding and decoding forwarding methods, and greatly reducing the bit error rate of the receiving end.

Description

technical field [0001] The present invention relates to the technical field of signal processing in the field of wireless communication, in particular to an estimation and forwarding method of a full-duplex traffic cooperation communication network. Background technique [0002] Cooperative communication network is a wireless communication network widely researched and applied at present. Cooperative communication has the advantages of improving throughput, enhancing transmission reliability and expanding transmission range. Cooperative communication networks have been included in relevant communication standards, such as LTE-A and IEEE 802.16j standards. Introduce the key technology of collaborative communication in the intelligent transportation communication network to increase the coverage of the wireless network and improve the efficiency and reliability of information transmission, so as to realize the high-speed and reliable transmission of traffic signals in the inte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/155H04L25/03
CPCH04B7/15557H04L25/03242H04L25/03318
Inventor 韩双双赵恺程翔杨柳青王飞跃
Owner QINGDAO ACADEMY OF INTELLIGENT IND
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