Zero padding mode-based CI-OFDM communication method

A technology of CI-OFDM and communication method, applied in the direction of digital transmission system, electrical components, error prevention, etc., can solve the problems of system bit error rate performance reduction, received information loss, etc., and achieve the effect of improving system bit error rate performance

Inactive Publication Date: 2013-06-12
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0005] The traditional CI-OFDM system uses a cyclic prefix (Cyclic Prefix, CP) method to eliminate inter-symbol interference when adding a guard interval, and removes the data of the cyclic prefix at the receiving end, but this processing method will lead to the loss of part of the received information. loss, which reduces the performance of the system bit error rate

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  • Zero padding mode-based CI-OFDM communication method
  • Zero padding mode-based CI-OFDM communication method
  • Zero padding mode-based CI-OFDM communication method

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[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. It should be understood that the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] The present invention provides a CI-OFDM communication method based on the zero-adding method, adopts the ZP method as the guard interval in the data transmission process, and performs detection in conjunction with the data symbols of the guard interval in the data reception process, thereby making full use of frequency diversity Gain, improving the system bit error rate performance. Compared with the traditional ca...

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Abstract

The invention discloses a zero padding mode-based carrier interferometry orthogonal frequency division multiplexing (CI-OFDM) communication method, and belongs to the field of communication technology. The conventional CI-OFDM system eliminates intersymbol interference by using a cyclic prefix (CP) mode when adding a guard interval so as to remove the data of the cyclic prefix at a receiving end; but the processing method causes loss of part of received information so as to reduce the bit error rate of the system. The zero padding mode is adopted as the guard interval during the data transmission and detection is performed by combining the data symbol of the guard interval in the data receiving process, so the frequency diversity gain is fully utilized and the bit error rate of the system is improved.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a carrier interference OFDM (Carrier Interferometry Orthogonal Frequency Division Multiplexing, CI-OFDM) communication method. Background technique [0002] Orthogonal Frequency Division Multiplexing (OFDM) has been widely used in various WLANs, new generation cellular mobile communication systems, digital broadcasting and TV, etc. in high-speed data transmission systems. [0003] The main reason why OFDM can become the core technology of various mainstream standards is that it can convert frequency-selective fading channels into parallel flat-fading sub-channels by rationally designing system parameters, thus effectively combating inter-symbol interference (Inter-symbol interference). Symbol Interference, ISI) at the same time, reduce the complexity of equalization processing at the receiving end. However, OFDM also loses the frequency multipath diversity gain. Therefore,...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L27/26
Inventor 高培王军李少谦
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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