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Single carrier frequency-division multi-address transmitting, receiving device based on multiple subband wave filter set and method thereof

A single-carrier frequency division and filter bank technology, applied in multi-frequency code systems, modulated carrier systems, digital transmission systems, etc., can solve problems such as rising interference between users, high synchronization accuracy requirements, and affecting overall communication performance. Reduce peak-to-average ratio, improve coverage, and strong robustness

Inactive Publication Date: 2007-03-07
SHANGHAI RES CENT FOR WIRELESS COMM
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Problems solved by technology

Of course, another implementation of SC-FDMA, that is, the IFDMA system, is completed in the time domain. It not only has the same advantages as the DFT-SOFDM system, but also has the same defects as the DFT-SOFDM system, that is, the synchronization accuracy requirement High, it is easy to increase the interference between users due to poor synchronization, and affect the overall performance of communication

Method used

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  • Single carrier frequency-division multi-address transmitting, receiving device based on multiple subband wave filter set and method thereof
  • Single carrier frequency-division multi-address transmitting, receiving device based on multiple subband wave filter set and method thereof
  • Single carrier frequency-division multi-address transmitting, receiving device based on multiple subband wave filter set and method thereof

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Embodiment Construction

[0025] Fig. 1 shows a block diagram of a transmitter of a single carrier-frequency division multiple access system implemented based on multi-subband filter banks according to a specific embodiment of the present invention. It includes a serial / parallel conversion device 10, a K-point FFT transform device 11, a subband mapping device 12, a phase shift device 13, an M-point IFFT transform device 14, M up-sampling devices (for brevity) , only three 150, 151 and 152 are shown in Fig. 1), M polyphase filter devices (for simplicity, only three 160, 161 and 162 are shown in Fig. , a waveform synthesis device 18, a waveform truncation device 19 and a cyclic prefix addition device 20.

[0026] It should be noted that the channel coding device, digital modulation device, RF frequency conversion device and a transmitting antenna, which are essential components of the digital communication system transmitter, are not directly related to the purpose of the present invention and are not de...

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Abstract

This invention provides one single load wave and frequency address system emission device, receive device and its method based on multiple sub filter set, which comprises the following steps: through multiple sub filter set, the whole system wide band is divided into several crossing thin band signal channel by use of signal load transmission pattern; each user can align one or more sub signal channels according to transmission speed; each user adopts several sub channel with continuous lining or discrete sequence.

Description

technical field [0001] The present invention relates to the field of broadband communication, more specifically, to a frequency division multiple access transmitter, receiver and method based on multi-subband filtering. Background technique [0002] SC-FDMA is a new type of frequency division multiple access communication system proposed in the world in recent years, which not only has the peak-to-average ratio of single-carrier communication power, but also has the characteristics of simple multi-carrier communication and flexible resource scheduling. It is mainly used in broadband mobile The communication uplink solution supports frequency domain extension technology, frequency domain equalization method and multi-user concurrent communication scenarios. At present, there are mainly two implementations of SC-FDMA, namely DFT-SOFDM implemented in the frequency domain disclosed in reference [1], and IFDMA implemented in the time domain disclosed in reference [2]. [0003] T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L27/00
Inventor 张小东李明齐周志刚卜智勇
Owner SHANGHAI RES CENT FOR WIRELESS COMM
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