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Method for transmitting data of multiple carrier wave

A data transmission method and multi-carrier technology, applied in the multi-carrier field, can solve problems such as ineffective PAPR, multiple hardware resources or time resources, and large amount of calculation

Inactive Publication Date: 2008-01-23
UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
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  • Abstract
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Problems solved by technology

It can be seen from the above-mentioned phase factor sequence that in the existing multi-carrier data transmission method based on PTS, the cross-correlation of adjacent groups of phase factor sequences is relatively large, and the effect of reducing PAPR is not obvious. Therefore, in order to determine the actually used selected phase The amount of calculation required by the factor sequence is large, which will consume more hardware resources or time resources and reduce the efficiency of the system

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  • Method for transmitting data of multiple carrier wave
  • Method for transmitting data of multiple carrier wave
  • Method for transmitting data of multiple carrier wave

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Embodiment Construction

[0046] In order to make the objectives and technical solutions of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the drawings and embodiments.

[0047] The present invention is a multi-carrier data transmission method. The basic idea is: according to the number of groups of data to be transmitted, the candidate phase factor sequence is determined in advance within the range of the unit circle of the coordinate space, and the data to be transmitted is used before data transmission. And candidate phase factor sequence to determine the selected phase factor sequence.

[0048] Fig. 1 shows an exemplary flow chart of the multi-carrier data transmission method of the present invention, in which candidate phase factor sequences with small cross-correlation have been selected from the unit circle in advance and stored at the transmitting end and the receiving end. Referring to Figure 1, the method includes:

[0...

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Abstract

The present invention discloses a multicarrier data transmission method. A candidate phase factor sequence with small cross correlation is chosen from the unit circle of a coordinate space in advance. The method comprises that, A. the data waiting for transmitting in the transmitting end are processed by using all candidate phase factor sequences, the PAPR values of processing results are computed and compared, the candidate phase factor sequence corresponding to the PAPR minimum value is determined for the phase factor sequence selected; B. the processing result corresponding to the PAPR minimum value is considered as the main information, and the master information and the group numbers of the phase factor sequence selected are transmitted to the receiving end together; C. the receiving end determines the phase factor sequence selected according to the group numbers received, and makes the main information received be restored to the data waiting for transmitting.

Description

Technical field [0001] The present invention relates to multi-carrier technology in wireless communication, in particular to a multi-carrier data transmission method. Background technique [0002] In recent years, with the continuous development and maturity of wireless communication technology, multi-carrier technologies such as Orthogonal Frequency Division Multiplexing (OFDM) have the advantages of strong anti-multipath capability, high data transmission rate, and flexible resource allocation. It has received widespread attention and will become another core technology after Code Division Multiple Access (CDMA). [0003] The core idea of ​​multi-carrier technology is to divide a given channel into several independent sub-channels in the frequency domain, use one sub-carrier for modulation on each sub-channel, and transmit each sub-carrier in parallel. It can be seen that the multi-carrier signal is superimposed by a series of sub-channel signals accumulated in the time domain....

Claims

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Application Information

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IPC IPC(8): H04L27/32H04L5/02
Inventor 雷霞肖悦李少谦严春林张战加山英俊
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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