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Method, device and system for communication based on downlink channel adaptation

A communication system and adaptive technology, applied in the field of communication, can solve the problem of reducing the spectral efficiency of the system, and achieve the effect of minimizing interference and good BER

Active Publication Date: 2016-06-29
ALCATEL LUCENT SHANGHAI BELL CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this scheme is that the existing OFDMA system uses a sinc function that is sensitive to inter-carrier interference (ICI), and the additional CP length will reduce the system spectral efficiency

Method used

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  • Method, device and system for communication based on downlink channel adaptation
  • Method, device and system for communication based on downlink channel adaptation
  • Method, device and system for communication based on downlink channel adaptation

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0033] figure 1 It shows the topological diagram of the communication system in which the transmission signal is adaptively formed based on the downlink channel of the present invention. The communication system includes: user equipment 11 , user equipment 12 , . . . user equipment 1 n , and sending equipment 2 . Wherein, the user equipment 11 , the user equipment 12 , . . . the user equipment 1n may be any electronic equipment capable of communicating with the sending device 2, including but not limited to: mobile phones, PDAs, and the like. Moreover, the user equipment 11, the user equipment 12, . . . the user equipment 1n, and the sending device 2 all store the same prototype function set. Wherein, the prototype function set can be any real even function that exhibits better time-frequency localization (TFL) characteristics, including but not limited to:...

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Abstract

The invention provides a communication method, device and system based on downlink channel self-adaptation. Wherein, based on the channel information of each user equipment, the sending device selects prototype functions that match each channel information from the stored prototype functions, and performs shaping filtering on the communication information to be sent to the corresponding user equipment based on each prototype function. After the processing in the system, they are combined to form a transmission signal, and then the transmission signal and the relevant information of the matched prototype functions are transmitted; and each user equipment decodes the received signal based on the prototype function adopted by the sending equipment. to obtain the communication information carried in the signal. Compared with the prior art, the advantages of the present invention include: minimizing interference and achieving better BER.

Description

technical field [0001] The present invention relates to the communication field, in particular to a communication method, device and system based on downlink channel self-adaptation. Background technique [0002] In all schemes of OFDMA, the basic idea is to schedule different time-frequency resource grids for different user equipments to achieve multiple access. In order to obtain higher system capacity and better bit error rate (BER) performance, an existing practice is to use different cyclic prefix (CP) lengths for different degrees of intersymbol interference (ISI). The disadvantage of this solution is that the existing OFDMA system uses a sinc function sensitive to inter-carrier interference (ICI), and the additional CP length will reduce the system spectrum efficiency. Contents of the invention [0003] The purpose of the present invention is to provide a communication method, device and system based on downlink channel adaptation. [0004] According to one aspect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
Inventor 胡苏李腾武刚汪云华李亚麟侯志华
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD