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Technology and method of duplex mode selection for two-antenna wireless mobile relay

A technology of duplex mode and mobile relay, applied in wireless communication, duplex signal operation, radio transmission system, etc., can solve the problem of not making full use of time-frequency-antenna resources, etc.

Active Publication Date: 2017-07-21
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, neither FD mode nor HD mode can make full use of time-frequency-antenna resources
As far as we know so far, it is still an unsolved problem which duplex mode can obtain higher spectral efficiency in a two-antenna wireless mobile relay cooperative system

Method used

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  • Technology and method of duplex mode selection for two-antenna wireless mobile relay
  • Technology and method of duplex mode selection for two-antenna wireless mobile relay
  • Technology and method of duplex mode selection for two-antenna wireless mobile relay

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Experimental program
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Embodiment

[0042] A technical solution for duplex mode selection of a two-antenna wireless mobile relay, characterized in that:

[0043] Comparing the spectral efficiency of the FD and HD modes in the dual-antenna relay system under the AF protocol, the maximum SE expression is obtained by deriving the optimal power distribution in the FD and HD modes. According to the theoretical analysis, a dual-antenna AF relay system is proposed. A new duplex mode selection strategy is proposed and verified by numerical results.

[0044]As an optimized technical solution, a system model is established: a dual-antenna wireless mobile relay cooperative system, in which the source node and the destination node have only one antenna, denoted by S and D respectively, and the relay is equipped with two antennas, respectively R1 and R2 denoted. Under the AF protocol, the relay node simply amplifies the received signal and forwards it to the destination node. In FD mode, R1 and R2 are used to receive and fo...

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Abstract

The invention discloses a technical scheme of duplex mode selection of a two-antenna wireless mobile relay. The technical scheme is characterized in that under the AF protocol, the spectrum effectiveness of an FD mode and the spectrum effectiveness of an HD mode in a double-antenna relay system are compared, the largest SE expression is obtained by deducing the optimal power distribution under the FD mode and the HD mode, a new duplex mode selection strategy in the two-antenna AF relay system is provided according to the theoretical analysis, and the strategy is verified through a numerical result. According to the scheme, the new duplex mode selection strategy in the two-antenna AF relay system is provided, and the strategy is verified through the numerical result.

Description

technical field [0001] The present invention relates to a technical scheme for duplex mode selection of a two-antenna wireless mobile relay. Background technique [0002] Relays with multiple antennas can provide higher spectral efficiency (SE) than single-antenna relays. The more antennas the mobile relay has, the higher the spectral efficiency that the system can achieve. However, due to the limitation of size and cost, it is very difficult to apply multiple antennas on mobile relays. In practice, a feasible solution is to configure two antennas at the relay end. [0003] As the communication hub between the source node and the destination node, the relay completes the receiving and forwarding functions in full-duplex mode (FD) or half-duplex mode (HD). When the relay adopts FD mode, receiving signals from the source node and forwarding signals to the destination node can share the same time-frequency resources, but this will cause intra-antenna self-interference and in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/026H04B7/0404H04B7/0426H04L5/14H04W52/30H04W52/46
Inventor 张海林程文驰任智源李丹萍李勇朝王建伟
Owner XIDIAN UNIV