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Synchronization and channel estimation method and apparatus

A channel estimation and sequence technology, applied in channel estimation, radio transmission systems, electrical components, etc., can solve the problem of large error in results, and achieve the effect of saving preamble overhead

Active Publication Date: 2017-12-05
HONOR DEVICE CO LTD
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Problems solved by technology

[0003] With the development of communication technology, it is necessary to apply the training sequence of signal synchronization and channel estimation to multiple input multiple output (Multiple Input Multiple Output, referred to as MIMO) scenarios. If the existing sequence is continued to be used, the result error will be caused. Larger, so new training sequences need to be studied

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  • Synchronization and channel estimation method and apparatus
  • Synchronization and channel estimation method and apparatus
  • Synchronization and channel estimation method and apparatus

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Embodiment Construction

[0022] figure 1 It is a schematic diagram of the application scenario of the sequence-based channel estimation method provided by the present invention. The embodiment of the present invention can be applied to channel estimation under MIMO multi-channel conditions, and can also be applied to channel estimation under single-channel conditions.

[0023] figure 1 The shown MIMO system includes a sending end and a receiving end, and the sending end and the receiving end each include 2 antennas as an example. figure 1 , the sending end includes: sending antenna M-1T and sending antenna M-2T, and the receiving end includes: receiving antenna M-1R and receiving antenna M-2R.

[0024] There are four channels between the 2 transmitting antennas and the 2 receiving antennas, which are 1-1 (the channel between M-1T and M-1R), 1-2 (the channel between M-1T and M-2R ), 2-1 (channel between M-2T and M-1R) and 2-2 (channel between M-2T and M-2R).

[0025] In a MIMO system, the target sig...

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Abstract

The embodiments of the present invention provide a synchronization and channel estimation method and apparatus. According to the method, a transmitting end generates NT synchronization and channel estimation combined sequence packets and transmits the NT synchronization and channel estimation combined sequence packets to a receiving end by using NT transmitting antennas, and therefore, the plurality of antennas can synchronously transmit the synchronization and channel estimation combined sequence packets, and the combination of signal synchronization sequences and channel estimation sequences is realized, preamble overhead is saved, and synchronization and channel estimation combined sequences are not limited by delay spread anymore, so that requirements for greater delay can be satisfied; the synchronization and channel estimation combined sequences are not limited by the number of antennas and the number of channels; and therefore, conditions such as a single-antenna condition and a single-channel condition as well as a multi-antenna condition and a multi-channel condition can be supported.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a synchronization and channel estimation method and device. Background technique [0002] Currently, in the Wireless-Fidelity (WI-FI) standard, there are special training sequences for signal synchronization and channel estimation, for example, the Short Training Field (STF) sequence, which is specially used to support Signal synchronization; Channel Estimate Field (CEF for short) sequence, which is specially used to support channel estimation. Each training sequence has its own preamble, and the STF and CEF sequences in the prior art only support scenarios of Single Input Single Output (SISO for short) and 72 nanosecond (ns) delay. [0003] With the development of communication technology, it is necessary to apply the training sequence of signal synchronization and channel estimation to multiple input multiple output (Multiple Input Multiple Output, referred to as MI...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02H04B7/0413
CPCH04B7/0413H04L25/0204
Inventor 原頔陈庆春颜敏
Owner HONOR DEVICE CO LTD