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A data receiving method for a receiving end of a single-carrier frequency domain equalization system

A data receiving method and single-carrier frequency domain technology, applied in modulation carrier system, multi-frequency code system, shaping network in transmitter/receiver, etc. Improve accuracy and improve the effect of signal-to-noise ratio

Active Publication Date: 2021-08-31
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, this method makes the unique word still suffer from the intersymbol interference brought by the previous data when performing channel estimation

Method used

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  • A data receiving method for a receiving end of a single-carrier frequency domain equalization system
  • A data receiving method for a receiving end of a single-carrier frequency domain equalization system
  • A data receiving method for a receiving end of a single-carrier frequency domain equalization system

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Embodiment Construction

[0052] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0053] refer to figure 1 , a data receiving method for a receiving end of a single-carrier frequency domain equalization system, comprising the following steps:

[0054] Step 1: Radio waves are combined by antenna and radio frequency transceiver to generate intermediate frequency analog signal;

[0055] Step 2: After the intermediate frequency analog signal in step 1 is converted and filtered by A / D, a digital signal r(n) is generated;

[0056] Step 3: Capture the digital signal in step 2 to obtain the starting position of the next physical layer channel frame and the decimal frequency offset value; refer to figure 2 and Figure 4 , the specific way of this step is:

[0057] (1) Perform differential operation on the received digital signal

[0058] Delay the digital signal r(n) through the memory, and the delay ...

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Abstract

The invention discloses a data receiving method for a receiving end of a single-carrier frequency domain equalization system, belonging to the technical field of radio transmission and communication. In this method, the radio wave is combined with antenna and radio frequency transceiver, A / D conversion, and filtered to generate a digital signal; then the digital signal is captured, and it is compensated by using the starting position of the next frame and the estimated value of the decimal frequency offset , to obtain a synchronous digital signal; then perform tracking processing to obtain a block signal, and then use the integer frequency offset estimate and the tracking synchronization position estimate to compensate the block signal; then perform channel estimation and equalization to obtain an equalized digital signal; then pass Demodulation, channel decoding and deinterleaving to obtain information frame data. The invention can flexibly select parameters of the receiving end, and can evenly adjust indicators such as capture time and frequency offset estimation range according to system requirements, and its channel estimation is no longer subject to the problem of intersymbol interference caused by other data, thereby improving system performance.

Description

technical field [0001] The invention relates to the technical field of radio transmission and communication, in particular to a data receiving method for a receiving end of a single-carrier frequency domain equalization system. Background technique [0002] Single-carrier frequency domain equalization effectively combines the advantages of OFDM and single-carrier transmission, has a strong ability to resist frequency selective fading, and overcomes the shortage of high peak-to-average ratio in OFDM systems. The traditional single-carrier frequency domain equalization system uses the unique word as the cyclic prefix to change the linear convolution of the transmission signal and the channel function into a circular convolution, and uses the unique word as the training sequence to estimate the channel transmission parameters, thus using simple frequency domain equalization Instead of time-domain equalization with high complexity. [0003] However, this method makes the unique...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04L25/03H04L1/00
CPCH04L1/0071H04L25/03159H04L27/2649
Inventor 扈鹏杜明马鹏飞汪沛陈远友张望成
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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