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A Guided Interleaving Method for Reducing the Peak-to-Average Power Ratio of Mimo-ofdm Systems

A technology of MIMO-OFDM and peak-to-average power ratio, which is applied in the field of guided interleaving to reduce the peak-to-average power ratio of MIMO-OFDM systems, can solve the problems of reducing system PAPR performance optimization efficiency, large computational complexity, and lack of solutions, etc., to achieve Avoid redundant complexity, improve optimization efficiency, and achieve good PAPR performance

Active Publication Date: 2019-06-14
UNIV OF JINAN
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  • Application Information

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Problems solved by technology

However, simply applying the interleaving method to each transmit antenna of the MIMO-OFDM system, that is, generating the same number of candidate signals on each antenna, will lead to a large computational complexity, and the optimization efficiency for the system PAPR is not high
[0015] In summary, the interleaving method is directly applied to each transmitting antenna of the MIMO-OFDM system, and the number of OFDM candidate signals obtained by interleaving processing on each transmitting antenna is the same, which greatly reduces the optimization efficiency of the system PAPR performance. not ideal
For this shortcoming of existing interleaving methods, there is still a lack of effective solutions

Method used

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  • A Guided Interleaving Method for Reducing the Peak-to-Average Power Ratio of Mimo-ofdm Systems
  • A Guided Interleaving Method for Reducing the Peak-to-Average Power Ratio of Mimo-ofdm Systems
  • A Guided Interleaving Method for Reducing the Peak-to-Average Power Ratio of Mimo-ofdm Systems

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[0041] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0042] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0043] As introduced in the background technology, in the prior art, each transmit antenna in the MIMO-OFDM syst...

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Abstract

The present invention discloses a guiding interleaving method for reduction of an MIMO-OFDM system peak-to-average power ratio (PAPR). The method comprises the steps of: obtaining original OFDM candidate signal on each emission antenna in an MIMO (Multiple Input Multiple Output)-OFDM system, and calculating the PAPR value of each candidate signal; prior to each interleaving processing, comparing the PAPR values of the candidate signals on each emission antenna, and performing interleaving processing of the antennas where the candidate signal with the maximum PAPR value is located to generate anew OFDM candidate signal; and comparing the PM of the PAPR value of the new OFDM candidate signal in the emission antenna with a PAm of the PAPR value of the OFDM candidate signal existed on the antenna, if PM<PAm, allowing the PM to be equal to PAm and replacing the OFDM candidate signal existed on the antenna with the new OFDM candidate signal obtained on the emission antenna until the total number of the OFDM candidate signals generated by each emission antenna can reach a set quantity. The guiding interleaving method for reduction of the MIMO-OFDM system peak-to-average power ratio can greatly improve the system PAPR optimization efficiency, and can obtain better PAPR performances in a condition of the same computing complexity compared to a traditional interleaving method.

Description

technical field [0001] The present disclosure relates to the technical field of digital communication, in particular to a steered interleaving method for reducing the peak-to-average power ratio of a MIMO-OFDM system. Background technique [0002] As a representative of multi-carrier modulation technology, OFDM has been applied to many fields of wireless communication because of its high-speed data transmission rate and its ability to resist frequency selective fading. Although OFDM technology has many advantages, it also has obvious defects. Excessive peak-to-average power ratio (Peak-to-Average Power Ratio, PAPR) has always been one of the main shortcomings of this technology, which will lead to deterioration of OFDM system performance. Combining the Multiple Input Multiple Output (Multiple Input Multiple Output, MIMO) technology with OFDM can greatly improve system capacity and spectrum utilization. However, the MIMO-OFDM system also belongs to the multi-carrier structur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04L1/00H04B7/0413
CPCH04B7/0413H04L1/0071H04L27/2614Y02D30/70
Inventor 王灵垠杨晓晖杨星海
Owner UNIV OF JINAN
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