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Multi-bandwidth cell PDSCH (Physical Downlink Shared Channel) demodulation and decoding processing system and method

A channel demodulation and processing system technology, which is applied in the field of PDSCH channel demodulation and decoding processing systems in multi-bandwidth cells, can solve problems such as increased development costs, expensive design costs, and increased difficulty in interface design and development, and achieve channel estimation results Accurate and good application prospects

Active Publication Date: 2019-04-02
WUHAN HONGXU INFORMATION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Base station or terminal manufacturers basically set up independent teams to develop and design 1536-point FFT modules, which is expensive to design
[0004] To sum up, the traditional mode of dynamically adjusting the sampling rate not only increases the difficulty of interface design and development, increases the complexity of the system, but also inadvertently increases the development cost, and what is more, it will affect the stability of the system. unknown risk, it is urgent to provide an improved demodulation method to overcome the above defects

Method used

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  • Multi-bandwidth cell PDSCH (Physical Downlink Shared Channel) demodulation and decoding processing system and method

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Embodiment Construction

[0049] The following will be described in detail in conjunction with the accompanying drawings and embodiments.

[0050] 1. System

[0051] 1. Overall

[0052] Such as figure 1 , the system includes sequentially interactive radio frequency front-end receiving module 101, AD sampling module 102, synchronous search module 103, FFT transformation module 104, channel estimation module 105, PCFICH access decoding module 106, PDCCH access decoding module 107 and PDSCH access decoding module 108 .

[0053] 2. Functional modules

[0054] 1) RF front-end receiving module 101

[0055] The radio frequency front-end receiving module 101 is a module for wireless signal collection;

[0056] Its function is to collect radio frequency signals of various frequency points and bandwidths of 4G LTE FDD or TDD, and convert the radio frequency signals into intermediate frequency signals.

[0057] 2) AD sampling module 102

[0058] AD sampling module 102 is a module that converts intermediate...

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Abstract

The invention discloses a multi-bandwidth cell PDSCH (Physical Downlink Shared Channel) demodulation and decoding processing system and method, and relates to the technical field of wireless communication. The system comprises a radio frequency front-end receiving module (101), an AD sampling module (102), a synchronous searching module (103), an FFT (Fast Fourier Transformation) module (104), a channel estimation module (105), a PCFICH (Physical Control Format Indicator Channel) data access and demodulation module (107) and PDSCH data access and demodulation module (108) which are sequentially interacted. The multi-bandwidth cell PDSCH demodulation and decoding processing system adopts the same sampling rate and the same set of transmission interfaces, saves hardware resources, reduces the complexity of software design and has very good application prospects in some intelligent search and rescue fields.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a multi-bandwidth cell PDSCH channel demodulation and decoding processing system and method thereof. Background technique [0002] With the popularization and maturity of LTE, the base stations on the market, regardless of TDD or FDD standard, have extremely flexible cell bandwidth configuration, ranging from 20M to 1.4M. At the same physical location, there may be a combination of multiple frequency points. Different frequency points can be in the same frequency band, but different frequency points can adopt different bandwidth configurations. At two frequency points with different bandwidths on the same frequency band, if the sampling rate of the traditional mode is used, two ADs are required for sampling, but if the same sampling rate is used, then one AD is enough. [0003] At present, for the channel demodulation of LTE PDSCH, the mainstream search and rescue...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26
CPCH04L27/2649H04L27/265H04L27/2656
Inventor 彭迪单风云叶猛陈艳余
Owner WUHAN HONGXU INFORMATION TECH
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