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Virtual subcarrier dynamic setting method, receiving method and device and system

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: 2016-12-28
HUAWEI TECH CO LTD
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  • 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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  • Virtual subcarrier dynamic setting method, receiving method and device and system
  • Virtual subcarrier dynamic setting method, receiving method and device and system
  • Virtual subcarrier dynamic setting method, receiving method and device and system

Examples

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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 present invention provides a virtual subcarrier dynamic setting method, receiving method, device and system. The setting method includes: the transmitter obtains the dynamic spectrum information of its own geographic location; according to the dynamic spectrum information, on the left and right edges of the transmitter's working spectrum, determine the left edge virtual subcarrier and the right edge virtual subcarrier of the multi-carrier transmission system. number, so that the sum of the number of virtual subcarriers at the left edge and the number of virtual subcarriers at the right edge is not less than the aliasing guard band of the baseband signal of the multi-carrier transmission system and is not greater than the discrete Fourier transform dimension of the baseband signal; according to the determined left edge virtual subcarrier The number of carriers and the number of virtual subcarriers at the right edge are used to set the virtual subcarriers of the multi-carrier transmission system. The invention dynamically sets the virtual sub-carrier so that the bandwidth and the occupied frequency spectrum of the baseband signal can be changed adaptively, expands the frequency spectrum dynamic range of the baseband signal, and reduces the software and hardware equipment needed to cover a given frequency spectrum.

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 (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 the multi-carrier transmission becomes the most potential physical la...

Claims

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Application Information

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Patent Type & Authority Patents(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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