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Dynamic configuration method, device and system for virtual subcarriers and receiving method and device for dynamic virtual subcarriers

A technology of virtual sub-carrier and sub-carrier, applied in the field of receiving method, device and system, virtual sub-carrier dynamic setting method, can solve problems such as difficulty in applying dynamic spectrum, and achieve the effect of flexible and efficient dynamic spectrum utilization

Active Publication Date: 2013-12-18
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During system design and product implementation, the number and position of virtual subcarriers have been fixed, making it difficult to apply in dynamic spectrum scenarios

Method used

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  • Dynamic configuration method, device and system for virtual subcarriers and receiving method and device for dynamic virtual subcarriers

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Embodiment Construction

[0051] The method and device provided by the embodiments of the present invention can be applied to a multi-carrier transmission system. For example, OFDM system, FBMC system and MC-CDMA system, etc., can also be applied to a peer-to-peer network, such as two communication nodes in an Ad hoc network. The transmitter in the embodiment of the present invention can be located in the base station or in the terminal. Correspondingly, the receiver can be located in the terminal or in the base station. The transmitter and receiver are located on two communication nodes respectively.

[0052] Figure 2A It is a flow chart of a method for dynamically setting virtual subcarriers provided by an embodiment of the present invention. Such as Figure 2A As shown, the method provided in this embodiment includes:

[0053] Step 21: The transmitter obtains the dynamic spectrum information of its geographical location.

[0054] The transmitter obtains the dynamic spectrum information of its...

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Abstract

The invention provides a dynamic configuration method, device and system for virtual subcarriers and a receiving method and device for dynamic virtual subcarriers. The dynamic configuration method includes: a transmitter acquires dynamic spectral information of its geographic location; determining the amounts of left and right edge virtual subcarriers of a multicarrier transmission system at left and right edges of operating spectrum of the transmitter according to the dynamic spectral information, so that the sum of the amounts of the left and right edge virtual subcarriers is not smaller than aliasing guard bands of baseband signals of the multicarrier transmission system and not larger than discrete Fourier transform dimensionality of the baseband signals; setting virtual subcarriers of the multicarrier transmission system according to the determined amount of the left edge virtual subcarriers and the determined amount of the right edge virtual subcarriers. The virtual subcarriers are set dynamically so that bandwidth and occupied spectrum of the baseband signals can change adaptively; spectral dynamic range of the baseband signals is broadened; software and hardware equipment required to cover given spectrums is decreased.

Description

technical field [0001] The embodiments of the present invention relate to the field of communication technologies, and in particular, to a method for dynamically setting virtual subcarriers, a receiving method, a device, and a system. Background technique [0002] The multi-carrier transmission system can effectively suppress multipath fading, realize high-speed data transmission, and is simple to implement and high in spectrum efficiency. For example, Orthogonal frequency-division multiplexing (OFDM for short) technology. The multi-carrier system divides the frequency selective fading channel into several flat fading sub-carriers that are orthogonal to each other; according to the dynamic change of the spectrum, some sub-carriers are simply set to zero so that these sub-carriers do not transmit data. The multi-carrier system has a spectrum adaptive function, so multi-carrier transmission has become the most potential physical layer transmission technology for dynamic spect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/10H04W16/14H04L5/00
CPCH04L27/0006H04L5/0007H04L5/0042H04L5/0092H04L5/0096H04L27/2605H04L27/2602H04W16/10H04L27/26025H04L27/2627
Inventor 蒋伟
Owner HUAWEI TECH CO LTD
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