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Method for transmitting signal of offset orthogonal amplitude modulation system

A technology of quadrature amplitude modulation and signal transmission, which is applied in the field of signal transmission of OQAM system, can solve the problems that it is difficult to ensure the accuracy of the propagation channel, the overall performance of the OQAM system is not ideal, and the reception quality of the OQAM system is affected.

Inactive Publication Date: 2006-10-18
HUAWEI TECH CO LTD
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Problems solved by technology

Due to the low signal-to-interference-noise ratio of the pilot symbol signal, it is difficult to ensure the accuracy of the propagation channel estimation, which will directly affect the receiving quality of the OQAM system, making the overall performance of the OQAM system not ideal

Method used

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  • Method for transmitting signal of offset orthogonal amplitude modulation system
  • Method for transmitting signal of offset orthogonal amplitude modulation system
  • Method for transmitting signal of offset orthogonal amplitude modulation system

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Embodiment Construction

[0109] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0110] The main processing idea of ​​the method of the present invention is as follows: firstly, the real part interference signal forming interference to the real part signal of the pilot symbol and the imaginary part interference signal forming interference to the imaginary part signal of the pilot symbol are configured, and then from the real part interference signal and any data signal in the imaginary part interference signal; configure the transmission value of other data signals except the selected data signal in the real part interference signal and the imaginary part interference signal, and be the pilot symbol real part signal and the pilot signal Configure the emission value with the same absolute value for the imaginary part signal of the frequency symbol; then, determine the emission value condition for the interference ge...

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Abstract

A method for emitting signal of offset orthogonal amplitude modulation system includes configuring real part interference signal and virtual part interference signal, selecting any one of data signal from two said interference signals, configuring emission value with the same absolute value for pilot frequency symbol real part and virtual part signal and configuring emission value of each other data signal in addition to selected signal on two said interference signals, confirming emission value condition to counterbalance interference generated by two said interference signals and confirming emission value of selected data signal.

Description

technical field [0001] The invention relates to a transmitting end processing technology of an offset quadrature amplitude modulation (OQAM) system, in particular to a signal transmitting method of the OQAM system. Background technique [0002] At present, with the rapid development of high-speed data services such as: digital audio broadcasting (DAB), digital television broadcasting (DVB), high-speed downlink data packet data transmission (HSDPA), etc., the use of larger spectral bandwidth combined with high-order modulation technology To transmit high-speed data has become an inevitable choice. Among them, the commonly used technology is multi-carrier transmission. Orthogonal Frequency Division Multiplexing (OFDM) system is a multi-carrier transmission system with high spectrum efficiency. [0003] In order to remove or reduce the length of the guard interval and the number of virtual subcarriers in the traditional OFDM system, and further improve the spectrum efficiency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/36
Inventor 吴和兵王吉滨
Owner HUAWEI TECH CO LTD
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