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Signal transmission method, reception method and device based on multi-carrier spatial modulation

A multi-carrier modulation and space modulation technology, which is applied in the direction of modulated carrier system, channel estimation, multi-frequency code system, etc., can solve the reliability problems of fading multi-carrier space modulation system, and achieve enhanced ability to resist fading or related channels, The effect of improving link reliability

Active Publication Date: 2021-07-27
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is the reliability problem of multi-carrier space modulation system in fading or correlated channel environment. At present, there is no very effective method to reduce the impact of fading or correlated channel environment on the system

Method used

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  • Signal transmission method, reception method and device based on multi-carrier spatial modulation
  • Signal transmission method, reception method and device based on multi-carrier spatial modulation
  • Signal transmission method, reception method and device based on multi-carrier spatial modulation

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Embodiment 1

[0098] In this embodiment, we introduce a downlink physical channel training scheme suitable for multi-carrier spatial modulation in combination with specific system parameter settings. In this embodiment, the base station is equipped with N antennas, the terminal is equipped with M antennas, and the system adopts Time-division Duplex (TDD) mode, so the downlink channel can be inferred from the uplink channel by using channel reciprocity.

[0099] figure 2 It is a block diagram of a preprocessing-based multi-carrier spatial modulation system according to an embodiment of the present application. like figure 2 It can be seen from the illustration that, compared with the traditional multi-carrier spatial modulation system, the multi-carrier spatial modulation system based on preprocessing in this embodiment adds a preprocessing module between the spatial modulation and the IFFT module. The basic idea is to perform spatial modulation operations on the equivalent channel compo...

Embodiment 2

[0132] In this embodiment, the effectiveness of the solution provided by the present invention will be illustrated through the parameter setting and simulation results in the actual system. Consider a system using 256 subcarriers, where the effective number of subcarriers used to transmit data is 120. 12 adjacent subcarriers on every 14 OFDM symbols constitute a physical resource block (Physical Resource Block, PRB). Assuming that the channel state information is known at the transmitting end, according to the channel state information, the base station calculates the preprocessing basis matrix through the matched filter precoding algorithm, namely:

[0133] W b =H H

[0134] Afterwards, the base station extends the preprocessing basis matrix according to the extension manner described in the first embodiment, and performs preprocessing on the data. The channel model is EVA channel, and the mobile speed of the terminal is set to 50km / h.

[0135] First consider the case wh...

Embodiment 3

[0141] In this embodiment, a method for supporting multi-user MIMO in the solution provided by the present invention will be given. The block diagram of the multi-user MIMO system based on pre-processing spatial modulation in this embodiment is as follows Image 6 shown.

[0142] In the figure, the number of terminals serving at the same time is K, the number of antennas equipped with the base station is N, and the number of antennas equipped with the i-th terminal is M i , the total number of receiving antennas is When the base station preprocesses the transmitted data, it first calculates the frequency-domain precoding matrix according to the channel state information from the base station to all terminals, so as to obtain the precoding matrix of each terminal; The scheme is expanded to obtain an extended preprocessing matrix, and the data of each terminal is preprocessed; after the preprocessing, the data is combined in the merging module, that is, the data sent on the s...

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Abstract

The present application discloses a signal transmission method based on multi-carrier space modulation. First, the sending end device determines the preprocessing base matrix, and expands the preprocessing base matrix to obtain the extended preprocessing matrix; then, the sending end device uses the preprocessing base matrix The matrix preprocesses the first reference signal and sends it to the receiving device; finally, the transmitting device performs symbol mapping and spatial modulation on the bit stream to be transmitted, and uses the extended preprocessing matrix to preprocess the spatially modulated symbols, and then Multi-carrier modulation is performed on the preprocessed symbols and then sent to the receiving end device. The application also discloses a signal sending method in a multi-user system based on multi-carrier space modulation, a signal receiving method and device based on multi-carrier space modulation. The application of the present application can effectively improve link reliability and enhance the ability of a multi-carrier space system to resist fading or related channels.

Description

technical field [0001] The present application relates to the technical field of wireless communication, and in particular to a signal sending method, receiving method and device based on multi-carrier spatial modulation. Background technique [0002] The rapid development of the information industry, especially the growing demand from the mobile Internet and the Internet of Things (IoT, internet of things), has brought unprecedented challenges to future mobile communication technologies. For example, according to the report ITU-R M.[IMT.BEYOND 2020.TRAFFIC] of the International Telecommunication Union ITU, it can be predicted that by 2020, the growth of mobile traffic will increase by nearly 1,000 times compared to 2010 (4G era), and the number of user equipment connections will also increase. It will exceed 17 billion. As massive IoT devices gradually penetrate into mobile communication networks, the number of connected devices will become even more astonishing. In respon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0456H04L25/02H04L27/26
CPCH04B7/0452H04B7/0456H04L25/0204H04L27/2601
Inventor 钱辰孙鹏飞喻斌
Owner BEIJING SAMSUNG TELECOM R&D CENT