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Duplex communication transmission mode selection method, device, and duplex communication method and system

A transmission mode, duplex communication technology, applied in transmission systems, digital transmission systems, duplex signal operations, etc., can solve problems such as excessive computing resources and computing time, high computational complexity, and cumbersome closed-form solution expressions. , to achieve the effect of reducing implementation complexity, high system transmission rate, and avoiding performance degradation

Active Publication Date: 2017-11-14
SOUTHEAST UNIV
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Problems solved by technology

However, due to the cumbersome expression of the closed-form solution of the attainable transmission rate, the calculation complexity is high, and the calculation resources and calculation time consumed are too large

Method used

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  • Duplex communication transmission mode selection method, device, and duplex communication method and system
  • Duplex communication transmission mode selection method, device, and duplex communication method and system
  • Duplex communication transmission mode selection method, device, and duplex communication method and system

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Embodiment Construction

[0028] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0029] On the basis of analyzing various non-ideal factors such as channel state information quantization error, path power loss and residual self-interference existing in the actual duplex communication system, the present invention proposes to utilize the reachability of the system under the full-duplex and half-duplex modes The compact bound of the transmission rate is used as the basis for the selection of the transmission mode, thereby improving the system performance.

[0030] The present invention utilizes the quantized channel state information, path power attenuation factor and residual self-interference strength variance to calculate the compact bound of the achievable transmission rate of the system, specifically,

[0031] In full-duplex mode, the compact bound of the system's achievable transmission rate is:

[0032]

[0033] In the form...

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Abstract

The invention discloses a duplex communication transmission mode selection method, and belongs to the technical field of wireless communication. A transmission mode is selected through comparing the reachable transmission rate compact boundaries of a system under a full-duplex transmission mode and a half-duplex transmission mode: a transmission mode with a quite higher reachable transmission rate compact boundary is selected. The invention further discloses a duplex communication transmission mode selection apparatus, and a duplex communication method and system. According to the invention, the idea of taking the compact boundary of the reachable transmission rate of the system as an index for measuring the advantages and disadvantages of a duplex communication mode is brought forward the first time ever, and compared to a conventional mode of calculating the closed-form solution of the reachable transmission rate of the system, the operation complexity can be substantially reduced. Under the condition that fewer calculation resources and less calculation time are consumed, the system performance can be quite greatly improved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a duplex communication transmission mode selection method and device, and a duplex communication method and system. Background technique [0002] In the traditional point-to-point two-way communication system, both communication nodes work in half-duplex mode, requiring two time slots to realize information exchange. Therefore, point-to-point full-duplex two-way communication is proposed to improve the reachable rate of the system. In a full-duplex two-way communication system, both nodes can transmit and receive at the same frequency at the same time, so only one time slot can complete a symbol exchange, which can theoretically double the spectrum utilization of the system. However, in full-duplex mode, the self-interference from the transmitting end to the receiving end inside each node is very serious, which will cause useful signals to be unreceived. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/16H04L5/00
CPCH04L5/0057H04L5/006H04L5/16
Inventor 许威刘健张华
Owner SOUTHEAST UNIV
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