ADC data fine synchronization method, system and related device
A fine synchronization and data technology, applied in the field of computer-readable storage media, can solve the problems of anti-false multipath ability decline, difficult to deal with false multipath, shorten effective length, etc.
Inactive Publication Date: 2019-09-10
HUNAN KEAYSHARE COMM TECH CO LTD
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Problems solved by technology
[0003] At present, it is difficult to deal with the pseudo-multipath problem in related technologies, and the synchronization error caused by the pseudo-multipath can only be controlled within the CP (CyclicPrefix, cyclic prefix) range of the OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) symbol
This is equivalent to shortening the effective length of the CP, resulting in a decline in the ability to resist false multipath
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[0040] The core of the present application is to provide a method for precise synchronization of ADC data, which can overcome the influence of pseudo-multipath on fine synchronization of ADC data. Another core of the present application is to provide an ADC data fine synchronization system, a receiver and a computer-readable storage medium.
[0041] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0042] ...
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An ADC data fine synchronization method provided by the invention comprises the following steps: receiving ADC data and preprocessing the ADC data to obtain ADC preprocessed data; performing sliding correlation operation on the ADC preprocessing data and a preset first long training sequence and a preset second long training sequence to obtain a corresponding first operation result and a corresponding second operation result; and performing judgment processing on the first operation result and the second operation result to determine the position of the synchronization point so as to realize fine synchronization of the ADC data. By respectively carrying out sliding correlation operation on ADC preprocessing data and a preset first long training sequence and a preset second long training sequence, that is to say, adopting a double-sliding-window mode to perform sliding correlation operation, judgment processing is performed based on a first operation result and a second operation resultto determine the position of a synchronization point, and the position is not influenced by pseudo multipath, so that the influence of the pseudo multipath on fine synchronization of ADC data can beovercome. The invention further provides an ADC data fine synchronization system, a receiver and a computer readable storage medium which all have the above beneficial effects.
Description
technical field [0001] The present application relates to the field of fine synchronization of ADC data, in particular to a method, system, receiver and computer-readable storage medium for fine synchronization of ADC data. Background technique [0002] In the 802.11n standard, the receiver uses the preamble to perform frame synchronization, and the frame synchronization is divided into two parts: coarse synchronization and fine synchronization. In a SISO (Single-input Single-output, single-antenna system) system, fine synchronization is accomplished through a sliding correlation operation between the local long training sequence and received data. In a MIMO (Multi-input Multi-output, multi-antenna system) system, in order to avoid the beamforming effect between different transmitting antennas, the preambles transmitted by the two transmitting antennas need to be differentiated by cyclic shifting. After passing through the MIMO channel, the data received by any antenna at t...
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IPC IPC(8): H04L27/26
CPCH04L27/2665
Inventor 赵超群王德刚向良军李焱明喻明孙捷敏
Owner HUNAN KEAYSHARE COMM TECH CO LTD