Method for transmitting data of multiple carrier wave

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 receivingend 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 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 multi-path resistance, 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 a 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, which w...

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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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