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Signal processing method and signal processing device

A signal processing and symbol technology, applied in the field of communication, can solve the problems of ultra-wideband signal transmission power limitation, insufficient spectrum notch depth, failure to eliminate frequency band interference, etc., to reduce out-of-band leakage, deepen spectrum notch depth, and concentrate energy Effect

Active Publication Date: 2012-05-23
HUAWEI TECH CO LTD +1
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Problems solved by technology

[0025] The above-mentioned MB-OFDM UWB system uses the unlicensed spectrum of 3.1GHZ-10.6GHz allocated by international standards, while the available spectrum of China’s ultra-wideband standard is 4.2GHZ-4.8GHZ and 6.0GHZ-8.55GHZ, so the spectrum planning in China In some restricted areas, such as in the range of 3.6-6.0GHz, there are strict restrictions on the transmission power of UWB signals
[0026] In the process of implementing the present invention, the inventor found that the above-mentioned prior art technology for limiting transmission power is to directly turn off the corresponding subcarriers on the frequency bands where interference exists. purpose of interference

Method used

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  • Signal processing method and signal processing device
  • Signal processing method and signal processing device

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no. 1 example

[0062] figure 2 It is a flow chart of the signal processing method of the first embodiment of the present invention, including the following steps:

[0063] 101. Perform precoding on the data to be sent after interleaving and coding to generate precoded data;

[0064] Specifically, the data to be sent is generated through convolutional coding and interleaving coding to generate interleaved coded data a k , according to the following formula for the interleaved coded data a k Perform precoding to generate precoded data b k :

[0065] b k = a k ⊕ b k - 1 - - - ( 8 )

[0066] Among them, a k is the data to be sent at the kth moment after interleaving encoding, b k is the precoding data at the kth moment, b k-1 is the prec...

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Abstract

The invention discloses a signal processing method. Data to be transmitted after the trellis coding is pre-coded to generate a pre-coding data, the pre-coding data is mapped through a constellation diagram to generate a mapping data, the mapping data is coded to generate relevant coding data, and finally an OFDM symbol is generated by carrying out IFFT of the relevant coding data, and the OFDM symbol is transmitted after being processed. The invention also discloses a signal processing device. Attenuation outside a channel of a sub-carrier is accelerated through the pre-coding and relevant coding, and the leakage outside the channel of the sub-carrier sidelobe is reduced, so the energy of the sub-carrier main lobe is more concentrated so as to further deepen the concave depth of a frequency spectrum and to eliminate the interference on relevant frequency bands.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a signal processing method and a signal processing device. Background technique [0002] With the increasing demand for wireless communication in modern society and the rapid development of wireless communication technology, the number of wireless communication users has increased dramatically. On the other hand, with the improvement of people's living standards, people have higher and higher requirements for wireless communication. Some existing wireless communication technologies can no longer meet the needs of some emerging applications such as home theater, video-on-demand, and ultra-high-speed Internet access, which makes the spectrum resources suitable for wireless communication increasingly tight. Short-range wireless communication technology usually has low radiation, little interference to adjacent communication equipment, can reuse spectrum resource...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04L1/00
Inventor 刘培徐平平林旺德徐汉青
Owner HUAWEI TECH CO LTD
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