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Apparatus and method for reducing peak-to-average ratio of multi-carrier system based on multiband filter bank

A filter bank, multi-carrier technology, applied in the field of multi-carrier transmission, can solve the problem of high computational complexity and achieve the effect of reducing the peak-to-average ratio

Inactive Publication Date: 2011-09-07
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this method is that the computational complexity is very high

Method used

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  • Apparatus and method for reducing peak-to-average ratio of multi-carrier system based on multiband filter bank
  • Apparatus and method for reducing peak-to-average ratio of multi-carrier system based on multiband filter bank
  • Apparatus and method for reducing peak-to-average ratio of multi-carrier system based on multiband filter bank

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Embodiment Construction

[0021] The present invention will be described in detail below with reference to the drawings and in conjunction with specific embodiments. It should be understood that the present invention is not limited to specific embodiments.

[0022] figure 1 It is a block diagram of a multi-carrier wireless transmitter with a multi-band filter capable of reducing the peak-to-average ratio in a mobile communication network according to a specific embodiment of the present invention. It includes a channel coding device 11, a digital modulation device 12, a serial-to-parallel conversion device 13, a Fourier (DFT) transform device 14, a shaping filter bank device 15, an RF frequency conversion device 16 and a transmitting antenna 17.

[0023] It should be noted, figure 1 The channel coding device, digital modulation device, RF frequency conversion device, and transmitting antenna shown in the figure are not directly related to the purpose of the present invention. They are only a preferred embod...

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Abstract

The presented method comprises: on transmitter end, taking linear transformation, such as DFT or IDFT, to the serial-to-parallel data, and then letting the modulated signal on sub-carrier of multi-carrier transmission signal have some correlation, then reduces the peak-mean rate of multi-carrier transmitter based on MBFB.

Description

Technical field [0001] The present invention relates to multi-carrier transmission technology, and more specifically, to a device and method for reducing peak-to-average ratio in a multi-carrier transmitter based on a multi-band filter bank. Background technique [0002] In recent years, wireless communication systems have developed rapidly in the direction of broadband; along with this development trend, the bandwidth occupied by a single channel of the wireless communication system has become higher and higher, the complexity of wireless receivers has also continued to grow, and the implementation complexity has increased. At the same time, according to the research findings in recent years, in order to effectively improve the throughput of the system, the combined multiple access technology of frequency division multiple access technology (FDMA) and time division multiple access technology (TDMA) will become the main multiple access technology of future mobile communication tec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
Inventor 张小东李明齐卜智勇
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI