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A Balanced Modulation System for Amplitude of Pulse Position Modulation Signal

A pulse position modulation and signal technology, applied in the transmission system, electrical components, etc., can solve the problems of high communication bit error rate and insufficient communication stability, and achieve the effect of ensuring communication efficiency and small calculation amount

Active Publication Date: 2021-07-27
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of high communication bit error rate and insufficient communication stability due to signal fading in pulse position modulation communication

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  • A Balanced Modulation System for Amplitude of Pulse Position Modulation Signal
  • A Balanced Modulation System for Amplitude of Pulse Position Modulation Signal
  • A Balanced Modulation System for Amplitude of Pulse Position Modulation Signal

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Embodiment Construction

[0023] The present invention is described here in the encoding method as an example. One problem in this communication method is: In the transmission process, the signal is influenced, and the signal is fading, making the envelope of the signal. This problem causes it to determine the position of the pulse during the decoding process, which causes great difficulties to the signal decoding, which increases the communication error rate, and the communication stability is lowered. Currently solved this problem common method is an equalization algorithm, but the general equilibrium algorithm is large, and it is difficult to implement real-time processing of signals. Based on this problem, the present invention proposes a small amount of time-normalized amplitude modulated signal amplitude equalization system with small calculation, no training sequence.

[0024] figure 1 In the middle 1 is the received communication signal; 2 is a sensor for receiving a signal; 3 is a filter for filt...

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Abstract

The invention provides a system for equalizing and modulating the amplitude of the pulse position modulation signal, including a sensor, a filter, and a random access memory; the system also includes a control unit for short-time normalizing the amplitude of the pulse position modulation signal. The control unit processes the filtered signal s(n) generated by the filter according to the following steps: the control unit controls the buffering of the filtered signal s(n) into the random access memory; reads the filtered signal from the random access memory, and obtains the short-term window w n (m); calculate the maximum value M(n) of the signal contained in each short time window; respectively normalize each sampling point with the maximum value M(n) as a reference value, and obtain a short-time normalized signal; The invention effectively guarantees the communication efficiency; the signal is processed in real time.

Description

Technical field [0001] The present invention belongs to the hardware device of the pulse signal position modulated in the field of communication signal processing, and more particularly to a balanced modulation system for the amplitude of the pulse modulation signal. Background technique [0002] In the field of wireless communications, there are many commonly used modulation methods, with pulse moderation is a very common method. The modulation signals in the pulse position modulation change only the time generated by each pulse in the carrier pulse sequence, and does not change its shape and amplitude, and the amount of change in each pulse generation time ratio is in the amplitude of the modulated signal voltage, and the modulated signal The frequency is independent. Briefly, the time interval between the pulses represents the magnitude of the voltage of the modulation signal, and the shape and amplitude of each pulse are both. [0003] There is a problem in the communication ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B14/02
CPCH04B14/026
Inventor 蒋佳佳徐俊宇王宪全李春月孙中波
Owner TIANJIN UNIV