Channel estimation processing method, device and communication equipment thereof

A technology of channel estimation and processing method, which is applied in channel estimation, shaping network in transmitter/receiver, modulation carrier system, etc. It can solve the problems that phase noise and frequency offset cannot be effectively reduced

Active Publication Date: 2015-01-14
HUAWEI TECH CO LTD
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Problems solved by technology

In MIMO-OFDM systems, the antennas do not share a common source on one side, such as the common source of the transmitting antenna and the common source of the receiving antenna, or the communication scen

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  • Channel estimation processing method, device and communication equipment thereof
  • Channel estimation processing method, device and communication equipment thereof
  • Channel estimation processing method, device and communication equipment thereof

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Embodiment Construction

[0119] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0120] In view of the defects existing in the prior art, the embodiment of the present invention adopts corresponding methods to send the channel preamble sequence respectively for the two cases of Tx common source, Rx non-common source and Tx non-common source, Rx common source, and uses the corresponding channel The estimation method obtains the...

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Abstract

Provided in the present invention are a channel estimation processing method, apparatus and communication device, wherein a phase compensation processing method comprises: obtaining from various receiving antennae a reception signal of at least one first pilot frequency subcarrier in channel estimation preamble sequences transmitted simultaneously by a plurality of transmitting antennae; according to the reception signal of the at least one first pilot frequency subcarrier, obtaining the phase shift parameters of the various receiving antennae during the reception of the channel estimation preamble sequences, and obtaining a channel estimation matrix during the reception of data symbols; obtaining from the various receiving antennae a reception signal of at least one second pilot frequency subcarrier in the data symbols, the reception signal being obtained by calculation on the basis of non-common source phase noise factors of different receiving antennae, and obtaining the phase shift parameters of the various receiving antennae during the reception of the data symbols; and performing phase compensation on the received data subcarrier according to the phase shift parameters as well as the channel estimation matrix during the reception of the data symbols. The technical solution of the present invention can reduce the influence of phase noise and frequency offset effectively.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a channel estimation processing method, device and communication equipment. Background technique [0002] The future broadband wireless communication system needs to realize fast transmission of comprehensive service content on limited spectrum resources, so it is necessary to improve spectrum efficiency and transmission reliability. MIMO technology can fully develop space resources, use multiple antennas to achieve multiple transmissions and multiple receptions, and increase channel capacity exponentially without increasing spectrum resources and antenna transmission power. In addition, as a kind of multi-carrier technology, the subcarriers of the OFDM system are orthogonal to each other, which can efficiently use spectrum resources and overcome the adverse effects of multipath effects and frequency selective fading. The MIMO-OFDM technology combining the two effe...

Claims

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Application Information

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IPC IPC(8): H04L25/02H04L25/03H04L27/26
CPCH04L25/0204H04B7/0413H04L25/022H04L25/0224H04L27/2657H04L27/2663H04L27/2675
Inventor 黄煌林伟严茜
Owner HUAWEI TECH CO LTD
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