Adaptive Selection Method of Pilot Scheme in Full-duplex Bidirectional Large-Scale Antenna Relay Network

A large-scale antenna and self-adaptive selection technology, applied in pilot signal allocation, transmission path sub-channel allocation, digital transmission system, etc., can solve the problems of unfavorable payload data transmission, etc., achieve convenient calculation and increase the attainable rate Effect

Active Publication Date: 2019-01-25
SHANGHAI JIAOTONG UNIV
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Problems solved by technology

When the number of users is large and the channel coherence time is short, traditional pilot schemes for channel estimation are not conducive to the transmission of payload data

Method used

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  • Adaptive Selection Method of Pilot Scheme in Full-duplex Bidirectional Large-Scale Antenna Relay Network
  • Adaptive Selection Method of Pilot Scheme in Full-duplex Bidirectional Large-Scale Antenna Relay Network
  • Adaptive Selection Method of Pilot Scheme in Full-duplex Bidirectional Large-Scale Antenna Relay Network

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Embodiment Construction

[0041] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0042] According to the adaptive selection method of the channel estimation pilot scheme for the full-duplex two-way large-scale antenna relay network provided by the present invention, the method comprises the following steps:

[0043] Step 1: Establish a symmetrical full-duplex two-way large-scale antenna relay network;

[0044] Step 2: All user terminals send status information to the relay;

[0045] Step 3: The relay collects statistical information of large-scale fading between all users and the r...

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Abstract

The invention provides a pilot scheme self-adaptive selection method of a full-duplex bidirectional massive multiple input multiple output relay network. The method comprises the steps of 1, establishing a symmetrical full-duplex bidirectional massive multiple input multiple output relay network; 2, sending state information to a relay by all user terminals; 3, collecting statistic information of large-scale fading between all users and the relay by the relay; and 4, self-adaptively selecting a first pilot scheme or a second pilot scheme by the relay through a calculation judgment system. According to the method provided by the invention, the prior statistic information of large-scale fading is applied; the calculation is convenient and rapid; the channel coherence time is utilized fully; and the reachable speed of the system is clearly improved.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method for adaptively selecting a pilot scheme of a full-duplex bidirectional large-scale antenna relay network. Background technique [0002] As a research hotspot of wireless communication technology, massive multiple input multiple output (MIMO) technology has been studied more and more widely in recent years. Compared with traditional multi-antennas that only use a small number of antennas, large-scale antennas can provide great array gain and spatial multiplexing gain by using hundreds or even thousands of antennas, so they can achieve higher spectral efficiency and energy efficiency. Because the number of antennas is much larger than the number of users, simple linear processing techniques (such as Maximum-Ratio Combining / Maximum-Ratio Transmission, MRC / MRT) can be used to obtain the performance of approximate nonlinear techniques. In addition, large-scale...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00
CPCH04L5/005H04L5/0051H04L5/0058H04L5/006H04L5/0062H04L5/0069
Inventor 张战战陈智勇夏斌沈漫源
Owner SHANGHAI JIAOTONG UNIV
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