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Method and system for sending and receiving signals

A technology for receiving and sending signals, which is applied in the field of signal processing, can solve the problems of high PAPR, achieve the effects of low calculation requirements, easy implementation, and improved efficiency and signal-to-noise ratio

Inactive Publication Date: 2017-11-07
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in order to solve this technical problem, people invented single-carrier OFDM technology, that is: single-carrier discrete Fourier transform OFDM (SC-DFT-OFDM, Single Carrier Discrete Fourier TransformOFDM) technology, but the SC-DFT-OFDM technology Discrete Fourier Transform (DFT, Discrete FourierTransform) encoding will bring additional processing power requirements to the baseband processor; in addition, although SC-DFT-OFDM technology can reduce PAPR by about 3db, there is still the problem of excessive PAPR

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  • Method and system for sending and receiving signals
  • Method and system for sending and receiving signals
  • Method and system for sending and receiving signals

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Embodiment Construction

[0051] The basic idea of ​​the present invention is: carry out square-law transformation processing on the transmission signal, then carry out digital-to-analog conversion processing on the signal after the square-law transformation processing, and send out; carry out square-law inverse transformation processing on the received signal after the analog-to-digital conversion processing, Afterwards, subsequent processing is performed on the signal processed by the inverse square law transform.

[0052] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0053] The method for sending signals in the present invention, such as figure 1 shown, including the following steps:

[0054] Step 101: Perform square-law transform processing on the transmitted signal;

[0055] Specifically, the absolute value of the transmitted signal is averaged;

[0056] dividing the transmitted signal by the average val...

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Abstract

The invention discloses a method for sending and receiving signals. The method comprises: performing square-law transform processing on the transmission signal; performing digital-to-analog conversion processing on the signal processed by the square-law transform and sending it out. The present invention also discloses a system for transmitting and receiving signals. By adopting the method and system of the present invention, the peak-to-average ratio (PAPR) of communication signals can be effectively reduced, thereby effectively improving the efficiency and signal-to-noise ratio of the power amplifier (PA) .

Description

technical field [0001] The present invention relates to signal processing technology, in particular to a method and system for sending and receiving signals. Background technique [0002] With the increasing communication needs of people, cellular mobile network technology has developed from 2G to 3G, and the current Long Term Evolution (LTE, Long Term Evolution) technology has appeared, and will develop to 4G in the future. [0003] In the wireless communication technology after 3G, Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) technology with excellent spectral efficiency and anti-multipath performance is adopted to transmit communication signals. OFDM technology is a multi-carrier technology, and there is an inherent problem that the peak-to-average power ratio (PAPR, Peak-to-Average Power Ratio) is too high. In this way, the linearity of the power amplifier (PA, Power Amplifier) ​​is highly required. Especially for portabl...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH04L27/2614
Inventor 黄旭胡云玩
Owner ZTE CORP