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LTE cell search system and method based on fpga platform

A cell search and platform technology, applied in the direction of orthogonal multiplexing system, electrical components, multiplex communication, etc., can solve the problems of poor search performance of adjacent cells of the same frequency and high hardware resource overhead, and achieve on-chip resources The effect of reducing demand, improving competitiveness, and controlling chip costs

Active Publication Date: 2020-06-09
WUHAN HONGXU INFORMATION TECH
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of excessive hardware resource overhead of FPGA and poor search performance of adjacent cells of the same frequency in the cell search process of LTE system, and provide a LTE cell search system and method based on FPGA platform

Method used

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  • LTE cell search system and method based on fpga platform
  • LTE cell search system and method based on fpga platform
  • LTE cell search system and method based on fpga platform

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Embodiment Construction

[0060] The following will be described in detail in conjunction with the accompanying drawings and embodiments.

[0061] 1. System

[0062] 1. Overall

[0063] like figure 1 , the system includes a wireless signal receiver 00 , a baseband data generator 10 , a primary synchronization signal searcher 20 , a secondary synchronization signal searcher 30 , a cell search result determiner 40 and a cell search parameter configurator 50 .

[0064] Wireless signal receiver 00, baseband data generator 10, primary synchronization signal searcher 20, secondary synchronization signal searcher 30 and cell search result determiner 40 are connected in sequence; cell search result determiner 40, cell search parameter configuration device 50 and baseband The data generators 10 are connected sequentially.

[0065] 2. Working mechanism:

[0066] The wireless signal receiver 00 receives the air interface LTE downlink signal, converts it into intermediate frequency baseband data and sends it t...

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Abstract

The invention discloses an LTE cell search system and method based on an FPGA platform, and relates to the digital signal processing technology in the field of mobile communication. The system comprises a wireless signal receiver (00), a baseband data generator (10), a primary synchronization signal searcher (20), a secondary synchronization signal searcher (30), a cell search result decider (40)and a cell search parameter configurator (50); the wireless signal receiver (00), the baseband data generator (10), the primary synchronization signal searcher (20), the secondary synchronization signal searcher (30) and the cell search result decider (40) are sequentially connected; and the cell search result decider (40), the cell search parameter configurator (50) and the baseband data generator (10) are sequentially connected. The LTE cell search system disclosed by the invention has the following advantages and positive effects: 1. the LTE cell search mode is flexible; 2. the FPGA resource utilization rate is high; 3. the FPGA chip cost is reduced; and 4. the LTE cell search system is suitable for application to miniaturized and low-cost LTE wireless cell search analysis products.

Description

technical field [0001] The invention relates to software radio technology in the field of mobile communication, in particular to an FPGA platform-based LTE cell search system and method thereof. Background technique [0002] The LTE system introduces key technologies such as OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) and MIMO (Multi-Input&Multi-Output, Multiple Input Multiple Output), which significantly increases spectrum efficiency and data transmission rate. At present, the transmission rate of 30.72Mchips / s is adopted in China, and various bandwidth allocations are supported: 5MHz, 10MHz, 15MHz and 20MHz. Regardless of the bandwidth standard, the primary synchronization channel and the secondary synchronization channel have a bandwidth of 1.08MHz at the frequency center, 6 RBs, and 72 subcarriers. In the LTE cell search, it is necessary to perform a sliding window search on the complete wireless frame, calculate the ene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J11/00
CPCH04J11/0069H04J11/0093
Inventor 余磊叶猛
Owner WUHAN HONGXU INFORMATION TECH
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