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Downlink resource scheduling method based on ripplet transform in fourth generation (4G) cellular system

A resource scheduling and downlink technology, applied in multi-frequency code systems, wireless communications, electrical components, etc.

Active Publication Date: 2013-09-25
CHINA INFOMRAITON CONSULTING & DESIGNING INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Traditional signal theory is based on Fourier analysis. As a global transformation, Fourier transform has certain limitations.

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  • Downlink resource scheduling method based on ripplet transform in fourth generation (4G) cellular system
  • Downlink resource scheduling method based on ripplet transform in fourth generation (4G) cellular system
  • Downlink resource scheduling method based on ripplet transform in fourth generation (4G) cellular system

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Embodiment Construction

[0028] The invention is a downlink resource scheduling and allocation method based on small filter transformation, which is applied to the fourth generation cellular system. It includes small filter-based OFDM modulation, downlink resource scheduling, and small filter-based OFDM demodulation. Orthogonal frequency division multiplexing modulation based on small filter can obtain downlink signal time domain and frequency domain information, according to the time-frequency information and channel idle conditions, resource scheduling is carried out, and the scheduled signal is transmitted in the channel, and then through small filter-based normal Cross-frequency division multiplexing demodulation completes the entire downlink process.

[0029] Among them, the OFDM modulation process based on small filter is realized by 6 modules: serial / parallel converter, source encoder, discrete small filter inverse conversion device, parallel / serial converter, digital / analog converter, Up-conv...

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Abstract

The invention provides a downlink resource scheduling method based on ripplet transform in a fourth generation (4G) cellular system. The method comprises the following steps: orthogonal frequency division multiplexing (OFDM) modulation based on ripplet transform: processing a signal by a serial / parallel converter, a source encoder, an inverse discrete ripplet transformer (IDRT), a parallel / serialconverter, a digital / analog converter and upper frequency conversion equipment to realize ripplet transform based OFDM modulation so as to obtain time domain and frequency domain information of a downlink signal; downlink resource scheduling and allocation: scheduling and allocating time domain and frequency domain resources in a packet scheduler according to the time domain and frequency domain information and idle situation of channels; and OFDM demodulation based on ripplet transform: transmitting the scheduled signal in the channels, and then carrying out OFDM demodulation on the signal by lower frequency conversion equipment, an analog / digital converter, the serial / parallel converter, a DRT, a balancer, a decoding discriminator and the parallel / serial converter so as to finally complete the whole downlink resource scheduling process.

Description

technical field [0001] The present invention utilizes the small filter transform to obtain signal time domain and frequency domain characteristics at the same time, uses discrete small filter inverse transform to modulate the sub-channels to obtain the orthogonality among the sub-channels, and is applied to the downlink of the fourth generation cellular system Scheduling and allocation of road resources. Background technique [0002] The traditional signal theory is based on Fourier analysis. As a global transformation, Fourier transform has certain limitations. In practical applications, people make various improvements to the Fourier transform, and the wavelet transform is thus produced. Compared with the Fourier transform, the wavelet transform is a local transform in the time domain and frequency domain, so it can effectively extract information from the signal, and perform multi-scale refinement analysis on the function or signal through operations such as stretching a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04W72/12
Inventor 朱晓荣严伟邵世祥朱洪波
Owner CHINA INFOMRAITON CONSULTING & DESIGNING INST CO LTD