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A Compressed Sensing Ofdm Frame Synchronization Method

A technology of compressed sensing and frame synchronization, applied in the direction of multi-frequency code system, etc., can solve the problems of multi-processor resource overhead and related operation processing occupation, and achieve the effect of reducing processor resource overhead and reducing the number of related operation processing times

Active Publication Date: 2016-12-28
XIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the traditional TDS-OFDM frame synchronization method is feasible to a certain extent, the related operations of the frame synchronization process take up a lot of processor resource overhead

Method used

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  • A Compressed Sensing Ofdm Frame Synchronization Method
  • A Compressed Sensing Ofdm Frame Synchronization Method
  • A Compressed Sensing Ofdm Frame Synchronization Method

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Embodiment Construction

[0022] In order to further explain the technical means and effects that the present invention adopts to achieve the intended purpose of the invention, below in conjunction with the accompanying drawings and preferred embodiments, the specific implementation, structure, features and effects of the present invention will be described in detail as follows: rear. In the following description, different "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

[0023] In one embodiment of the present invention, the schematic diagram of the signal frame format of the TDS-OFDM system is as follows figure 1 shown. When performing frame synchronization, it is implemented based on training sequences (pseudo-random sequences filled in the guard interval), and the training sequences come from the frame header.

[0024] The rece...

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Abstract

The invention discloses a method for sensing OFDM frame synchronization in a compressed mode. The method comprises the steps that a compressed sensing matrix A is constructed; signal frames transmitted by a transmitting end are received by a receiving end, and a received signal vector r is formed; related operation processing is achieved through the compressed sensing matrix A and the received signal vector r to obtain a frame synchronization point d in a compressed domain of the signal frames; a frame synchronization point d0 in an uncompressed domain of the signal frames is determined according to the frame synchronization point d in the compressed domain; the frame synchronization point d0 in the uncompressed domain is used for carrying out the frame synchronization between the receiving end and the transmitting end. The method greatly saves processor resources.

Description

technical field [0001] The invention relates to a frame synchronization technology in a TDS-OFDM communication system, in particular to a compressed sensing OFDM frame synchronization method. Background technique [0002] Orthogonal Frequency-Division Multiplexing (OFDM) technology has excellent anti-multipath interference capability, so it is widely used in wireless communication systems such as cellular communication, digital broadcasting and television. According to the filling method of the guard interval of OFDM symbols, there are currently three types of OFDM systems: CP-OFDM system based on cyclic prefix (Cyclic Prefix, CP), ZP-OFDM system based on zero padding (Zero Padding, ZP) in the guard interval and A time domain synchronous (Time Domain Synchronous, TDS) TDS-OFDM system filled with pseudo-random sequences in the guard interval. Among these three types of OFDM systems, the reception processing algorithm of the ZP-OFDM system is complex. Compared with the CP-OF...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
Inventor 卿朝进王海滨董秀成张岷涛
Owner XIHUA UNIV
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