Method and device for diversity signal sending

Abstract

The invention relates to a method for grouped sending signal, which comprises: A, serially and parallel converting the input signal; B, dividing the converted signal into two paths with same length, then treating them with FFT; C, processing idle-frequency coding on the transformed signals; D, modulating the signals to be sent out via two antennas. The invention also provides a device for groupedsending signal. The invention, via FFT transforming and coding two paths of signals, can confirm the low-peak property of output signal.

Description

Method and device for sending signals in diversity technical field The present invention relates to the field of communication technology, in particular to a method and device for diversity sending signals. Background technique The Orthogonal Frequency Division Multiplexing (OFDM) technology in the communication field is to parallel-modulate the transmitted data symbols on multiple sub-carriers that are overlapped and orthogonal to each other. On the one hand, the serial-to-parallel conversion of data symbols will increase the symbol period on each subcarrier relatively, which can minimize the impact of time dispersion on the system caused by the multipath delay extension of the wireless channel, and avoid frequency selection. On the other hand, the orthogonality between subcarriers can effectively utilize the bandwidth and improve the system capacity. At the same time, in order to avoid symbol interference between symbols, a cyclic prefix or guard interval is inserted be...

AI Technical Summary

Problems solved by technology

The present invention provides a method and device for sending signals in diversity, which is used to solve the problem in the prior art that DFT-sOFDM combined with SFBC technology cannot guarantee low peak-to-average ratio

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