Double-sideband modulation system as well as signal reception end, frequency domain balancing device and method thereof

A technology of modulation system and frequency domain equalization, which is applied in the direction of baseband system components, transmitter/receiver shaping network, etc., can solve the problem of not being able to maximize the collection of frequency diversity, so as to maximize the frequency diversity gain and reduce Probability of deep fading, effect of improving performance

Active Publication Date: 2015-05-27
曹明伟
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0009] In the SC-FDE system, each modulation symbol transmitted occupies the entire bandwidth, so for frequency selective channels, if figure 1 The shown frequency domain equalization can collect a certain frequency diversity, but it cannot maximize the collection of frequency diversity

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  • Double-sideband modulation system as well as signal reception end, frequency domain balancing device and method thereof
  • Double-sideband modulation system as well as signal reception end, frequency domain balancing device and method thereof
  • Double-sideband modulation system as well as signal reception end, frequency domain balancing device and method thereof

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Embodiment Construction

[0043] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0044] Considering a broadband wired communication, optical communication or wireless communication system, in order to combat multipath fading, adopt SC-FDE technology (such as point-to-point communication system), or adopt SC-FDMA technology (such as multipoint-to-point communication system). Since the essence of the SC-FDMA technology is exactly the same as that of the SC-FDE technology, except that the multiple access function is added, the present invention only uses the SC-FDE technology as an example for illustration. Firs...

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Abstract

The invention discloses a frequency domain balancing device for collecting maximum frequency diversity gain in a double-sideband modulation system. The device comprises a Fourier transformation module, a merging module, a balancing module and a Fourier inversion module, wherein the Fourier transformation module is used for transforming the reception signals after cyclic prefix removal into a frequency domain so as to generate frequency domain signals; the merging module is used for carrying maximal-ratio merging on the frequency domain signals to collect frequency diversity gains and output merging signals; the balancing module is used for carrying balancing calculation on the merging signals; the Fourier inversion module is used for transforming the output signals of the balancing module into a time domain so as to obtain estimated values of sending signals corresponding to the reception signals. The frequency domain balancing device provided by the invention can be used for collecting the frequency diversity gains in the system to the greatest extent. The invention further discloses a signal reception end with the frequency domain balancing device, the double-sideband modulation system with the signal reception end and a frequency domain balancing method for collecting maximum frequency diversity gain in the double-sideband modulation system.

Description

technical field [0001] The invention belongs to the technical field of broadband digital communication, and in particular relates to a frequency domain equalization device and a frequency domain equalization method for collecting the maximum frequency diversity gain in a double sideband modulation system, and a signal receiving end of a double sideband modulation system with the frequency domain equalization device and a double sideband modulation system with the signal receiving end. Background technique [0002] In a communication system, different systems use specific allocated frequency resources, so it is necessary to perform spectrum shifting on modulated signals, that is, carrier modulation technology. After carrier modulation, the baseband signal is moved to the carrier, and the frequency band is symmetrically distributed on both sides of the center frequency. Such a signal is called a double-sideband modulated signal. [0003] Currently, there are mainly two carrie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/03
Inventor 曹明伟
Owner 曹明伟
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