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Systems and methods for wireless communication with per-beam signal synchronization

A beam signal and signal technology, applied in the field of large-scale multiple-input multiple-output wireless transmission, can solve problems such as bottlenecks in wireless transmission systems

Active Publication Date: 2019-08-09
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a communication system using OFDM modulation, the cyclic prefix length usually needs to be set to be slightly larger than the channel delay spread to alleviate the channel time dispersion, while the OFDM symbol length usually needs to be set to be much smaller than the inverse of the channel Doppler spread to alleviate Channel frequency dispersion, which can lead to bottlenecks in wireless transmission systems

Method used

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  • Systems and methods for wireless communication with per-beam signal synchronization
  • Systems and methods for wireless communication with per-beam signal synchronization
  • Systems and methods for wireless communication with per-beam signal synchronization

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Embodiment Construction

[0022] specific implementation

[0023] The following description is presented to enable one skilled in the art to make and use the invention, and is provided in the context of a specific application and its requirements. Various modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the present disclosure. Thus, the present disclosure is not to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the claims.

[0024]It will be understood that when a module or unit is referred to as being "on," "connected to" or "coupled to" another module or unit, it can be directly on the other module or unit. connected or coupled to another module or unit, or intervening modules or units may be present. In contrast, when a module or unit is referred to as being "directl...

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Abstract

Signal transmitting / receiving electronic devices or terminals in the present disclosure are configured to conduct per-beam signal synchronization in massive MIMO communication with a signal receiving / transmitting device or base station. During the massive MIMO communication, the devices or terminals are configured to transmit / receive signals via a set of beams to or from the signal receiving / transmitting device or base station. For beam domain signal of each individual beam of the plurality beams, the devices or terminals are configured to determine target time adjustments based on time shiftsof the beam domain signals induced by multipath effect and target frequency adjustments based on frequency offsets of the beam domain signals induced by the Doppler effect; adjust time independent variables of the beam domain signals by the time adjustments; and adjust frequency independent variables of the beam domain signals by the frequency adjustments. Further, per-beam synchronized BDMA massive MIMO transmission method is disclosed, which provides a solution to efficient and reliable wireless communications with high mobility and / or high carrier frequency.

Description

technical field [0001] The present invention relates to a large-scale multiple-input multiple-output (Multiple-Input Multiple-Output, MIMO) wireless transmission method using multiple antennas, in particular to a beam-by-beam synchronization method suitable for wireless communication. Background technique [0002] Mobile communication systems can be designed to achieve higher communication efficiency within limited time-frequency resources through multiple access techniques. Currently, multiple access technologies are widely used in practical communication systems. Some typical multiple access technologies include: frequency division multiple access (Frequency Division Multiple Access, FDMA), time division multiple access (Time Division Multiple Access, TDMA), code division multiple access (Code Division Multiple Access, CDMA) and orthogonal frequency division multiple access address (Orthogonal Frequency Division Multiple Access, OFDMA), etc. [0003] Specifically, FDMA i...

Claims

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Application Information

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IPC IPC(8): H04B7/0408H04B7/0413H04W56/00
CPCH04B7/0408H04B7/0413H04W56/005H04B7/01H04B7/0617H04L5/0048H04L27/2655
Inventor 高西奇尤力王闻今
Owner SOUTHEAST UNIV