Method and device for diversity signal sending

A technology of diversity transmission and signal, applied in the field of communication, which can solve the problem that the low peak-to-average ratio cannot be guaranteed

Inactive Publication Date: 2007-02-07
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] 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-s OFDM combined with SFBC technology cannot guarantee low peak-to-average ratio

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  • Method and device for diversity signal sending
  • Method and device for diversity signal sending

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Embodiment Construction

[0040] The present invention proposes a method and device for transmitting signals with diversity. The principle is that, after a series of transformations and signal divisions are performed on the input signal, the encoding process is performed by means of space-frequency encoding, and the second signal of the two signals obtained by encoding is The parity positions of one signal are respectively composed of the data sequences of the two signals obtained by division; the parity positions of the second signal are respectively composed of the data conjugate sequences of the two signals obtained by division, and the odd or even positions of the signal are formed by the corresponding The data in the even or odd position of the first channel signal is conjugated and then negatively formed. Through simulation, it can be confirmed that the low peak-to-average ratio of the output signal is guaranteed in this way during signal transmission.

[0041] The method of the present invention ...

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Abstract

The invention relates to a method for sending signal grouped, which comprises: A, processing serial and parallel conversions and FFT conversion on the input signal; B, dividing the input signal into two same paths of signals, to be coded; the odd and even positions of first path are formed by the data sequence of two signals; the odd and even positions of second path are formed by the data conjugate sequences of two signals, while its odd or even positions are negated on the conjugated data at the odd or even position of first path; C, modulating two paths, to be sent by antenna. The invention also discloses a relative device. The invention can confirm the low-peak uniform bit of output signal.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for diversity sending signals. Background technique [0002] 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 between symbols to eliminate intersymbo...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04L1/06H04B7/26H04L27/26
Inventor 葛绍伟
Owner HUAWEI TECH CO LTD
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