Efficient frequency division multiplexing transmission peak-to-average power ratio reduction method combining orthogonal transformation and non-orthogonal processing

A technology of peak-to-average ratio suppression and frequency division multiplexing, which is applied to orthogonal multiplexing systems, frequency division multiplexing system components, transmission systems, etc., to reduce equipment complexity and reduce equipment manufacturing costs , The effect of increasing the cost of hardware production

Active Publication Date: 2017-05-31
HARBIN INST OF TECH
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Problems solved by technology

[0005] The present invention is to solve the following problems of the traditional multi-carrier wireless communication system:

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  • Efficient frequency division multiplexing transmission peak-to-average power ratio reduction method combining orthogonal transformation and non-orthogonal processing
  • Efficient frequency division multiplexing transmission peak-to-average power ratio reduction method combining orthogonal transformation and non-orthogonal processing
  • Efficient frequency division multiplexing transmission peak-to-average power ratio reduction method combining orthogonal transformation and non-orthogonal processing

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specific Embodiment approach 1

[0033] Specific embodiments 1. Combined orthogonal transformation and non-orthogonal high-efficiency frequency division multiplexing transmission peak-to-average ratio suppression method. The main idea of ​​the present invention is: at the sending end, through symbol mapping, constellation mapping complex symbols are generated, and after normal The intersection processing is to orthogonalize the complex symbols of the constellation map, and use the frequency band compression algorithm to generate high-efficiency frequency division multiplexing symbols.

[0034] The specific steps are:

[0035] Step A, symbol mapping. The purpose of symbol mapping is to generate complex symbols for constellation mapping. From the 0,1 binary bit information of the transmitted information, through different modulation methods, several symbols are mapped into complex symbols as a group. Taking four-phase constellation mapping as an example, this stage The specific steps are:

[0036] Step A1, as...

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Abstract

The invention provides an efficient frequency division multiplexing transmission peak-to-average power ratio reduction method combining orthogonal transformation and non-orthogonal processing, relates to transmission systems and technologies in the technical field of wireless communication and aims to reduce the peak-to-average power ratio at a sending end of a system to a certain extent in a symbolic orthogonal transformation way to solve the problem that the sending end of the efficient frequency division multiplexing transmission system adopting a non-orthogonal carrier has a higher peak-to-average power ratio. According to the method, transmission symbols are generated firstly according to efficient frequency division multiplexing symbol generation principle, and then an orthogonal processing module is further added to the sending end of the system, so that the peak-to-average power ratio at the sending end of the system is reduced. The efficient frequency division multiplexing transmission peak-to-average power ratio reduction method can be applied to new-generation ground, no-load and satellite communications and can solve the problem of spectrum resource scarcity in the future to a great extent, and simulation results prove that the peak-to-average power ratio of the transmission system subjected to orthogonal transformation processing is lower than that of the traditional efficient frequency division multiplexing system.

Description

technical field [0001] The invention relates to a transmission system and technology in the technical field of wireless communication, in particular to a method for reducing peak-to-average ratio applied to a high-efficiency frequency division multiplexing transmission system. Background technique [0002] With the rapid development of wireless communication, high-bandwidth applications of mobile devices are increasing, and spectrum resources are increasingly scarce. Improving the utilization of limited spectrum resources has become a hot topic in current research. In the multi-carrier transmission system, OFDM has always been called a classic transmission method because of its high spectrum utilization rate and simple transceiver equipment, but researchers hope to have a transmission system with a higher spectrum utilization rate than OFDM. As early as 2003, I.Darwazeh et al. proposed a high-efficiency frequency division multiplexing technology——SEFDM (Spectrally Efficient ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04J1/06H04J11/00
CPCH04J1/06H04J11/0023H04L27/2604H04L27/2614H04L27/2627
Inventor 贾敏吴志颖尹志胜沈凌宇郭庆顾学迈张乃通
Owner HARBIN INST OF TECH
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