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System and method for processing signals

A signal processing and signal technology, applied in transmission systems, digital transmission systems, modulated carrier systems, etc., can solve problems such as unresolved phase errors and difficult signal processing by signal processing systems

Inactive Publication Date: 2014-04-16
MSTAR SOFTWARE R&D (SHENZHEN) LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing technology only incorporates the channel frequency response into the soft-output demapper, and does not solve the phase error still existing in the system, which will make it difficult for the signal processing system 10 to handle correctly Signal

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  • System and method for processing signals
  • System and method for processing signals

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Embodiment Construction

[0024] image 3 It is a functional block diagram of the signal processing system 30 according to the first embodiment of the present invention, including: a computing device 320 , a signal adjustment and corresponding device 340 and a decoder 380 .

[0025] The calculation device 320 calculates the phase error θ and generates the phase correction value e according to a part of the signal, such as the pilot signal jθ . The computing device 320 obtains a weight f(θ) according to a function f(x). For example, the weight f(θ) is inversely proportional to the phase error θ. The function f(x) is, for example, f(x)=k1 / ( k2+x i ), where k1 and k2 are real numbers and i is a positive number, generating a weight f(θ). The signal includes an in-phase signal (I signal) and a quadrature signal (Q signal), and the phase error includes sampling time offset, carrier frequency offset, phase noise, and sampling clock offset.

[0026] The signal adjustment and correspondence device 340 recei...

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Abstract

The invention provides a system and method for processing signals. The system provided by the invention comprises a computing device, a signal regulating and corresponding device and a decoder, wherein the computing device is used for receiving a signal and computing one phase error of the signal to generate a weight according to the phase error; the signal regulating and corresponding device coupled to the computing device is used for receiving the signal to generate multiple soft numerical values according the weight and the signal; and the decoder coupled to the signal regulating and corresponding device is used for decoding the soft numerical values to generate data.

Description

technical field [0001] The present invention relates to a signal processing system and method, in particular to a signal processing system and method for adjusting a signal according to a phase error of the signal to improve decoding performance. Background technique [0002] figure 1 It is a functional block diagram of the existing signal processing system 10 , including: a computing device 120 , a demapper (demapper) 140 and a decoder (decoder) 180 . The calculation device 120 calculates the phase error θ (phase error) according to a part of the signal, such as the pilot signal (pilot), and further generates a phase correction value e jθ . The inverse mapper 140 receives the signal and corrects the value e according to the phase of the computing device 120 jθ , after correcting the phase of the signal, it is inversely mapped to a plurality of soft values. Decoder 180 decodes these soft values ​​back into data output. [0003] figure 2 It is a functional block diagra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/00H04L1/00
Inventor 魏骏恺林永欣
Owner MSTAR SOFTWARE R&D (SHENZHEN) LTD