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Transmitting and receiving device for multiple carrier system and transmitting, receiving method thereof

A technology of multi-carrier system and transmitting device, which is applied in the field of receiving device and transmitting, and can solve the problems of implementation complexity and difficult guarantee of synchronization accuracy

Inactive Publication Date: 2009-12-16
SHANGHAI RES CENT FOR WIRELESS COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the sub-band symbol rate is low, that is, the sampling frequency is low, and the sampling rate of the received signal (that is, the input data symbols for multi-sub-band demodulation) is high (usually greater than M times the sub-band symbol sampling frequency, M is The total number of sub-bands), so the low-sampling-rate information obtained after sub-band demodulation is used to complete the synchronization of high-sampling-rate input data symbols before multi-sub-band demodulation, and its implementation complexity and synchronization accuracy are difficult to guarantee

Method used

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  • Transmitting and receiving device for multiple carrier system and transmitting, receiving method thereof
  • Transmitting and receiving device for multiple carrier system and transmitting, receiving method thereof
  • Transmitting and receiving device for multiple carrier system and transmitting, receiving method thereof

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Embodiment Construction

[0023] like figure 1 As shown: the transmitting device of the multi-carrier system of the present invention includes sequentially connected: a serial / parallel converting device 11, a subband mapping device 12, a phase shifting device 13, an M-point IFFT transforming device 14, M upper Sampling device (for brevity, figure 1 Only three 150, 151 and 152 are shown in ), M polyphase filters (for brevity, figure 1 Only three 160, 161 and 162 are shown), a parallel / serial conversion device 17, a waveform synthesis device 18, a waveform truncation device 19 and a cyclic prefix adding device 20. Wherein, a phase shifting device 13, an M-point IFFT transforming device 14, M upsampling devices, M polyphase filters, parallel / serial conversion device 17, and waveform synthesis device 18 constitute a multi-subband filter , the multi-subband filter performs subband multinomial filtering processing on each subband parallel symbol data block sequence, and performs synthesis processing on the...

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Abstract

This invention provides one multi-load wave system emission, receive device and its emission method, wherein, emission device converts sequence number into multiple series sequence number through series and parallel conversion and then filter set modulates each sequence of multiple filter into different sub band relative sub load; then sub filter outputs multi-load wave signal for block operation; finally adding recycle prefix on each data block onto emission frequency; receive device removes recycle prefix of signal data and then balances each data block.

Description

technical field [0001] The present invention relates to a transmitting and receiving device and a transmitting and receiving method thereof in a wireless communication system, in particular to a transmitting and receiving device and a receiving device in a multi-subband filter bank-based multi-carrier frequency division multiple access system (MC-FDMA) Its transmission and reception methods. Background technique [0002] In recent years, wireless communication systems have developed rapidly towards broadband; along with this development trend, the bandwidth occupied by a single channel in wireless communication systems is getting higher and higher, the complexity of wireless receivers is also increasing continuously, and the implementation complexity is getting higher and higher. At the same time, according to research in recent years, in order to effectively improve the throughput of the system, the combined multiple access technology of frequency division multiple access t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
Inventor 张小东李明齐周志刚卜智勇
Owner SHANGHAI RES CENT FOR WIRELESS COMM