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Signal receiving end and signal processing method of adaptively adjustable soft information

A signal receiving end and signal processing technology, applied to electrical components, transmission systems, etc., can solve the problems of increased bit error rate and low bit error rate, and achieve the effect of increasing bit error rate

Inactive Publication Date: 2018-05-15
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the soft information S is adjusted by a fixed coefficient A I has its disadvantages, if when soft information s I When it is good enough (representing that the decoded data generated after quantization and decoding has a very low bit error rate (BER)), multiplying it by the fixed coefficient A may cause the bit error rate to increase

Method used

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  • Signal receiving end and signal processing method of adaptively adjustable soft information
  • Signal receiving end and signal processing method of adaptively adjustable soft information
  • Signal receiving end and signal processing method of adaptively adjustable soft information

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Embodiment Construction

[0045] The technical terms in the following explanations refer to the customary terms in this technical field. If some terms are explained or defined in this specification, the explanations of these terms shall be based on the descriptions or definitions in this specification.

[0046]The disclosed content of the present invention includes a signal receiving end capable of adaptively adjusting soft information and a signal processing method thereof, which can adaptively adjust soft information according to the distribution of soft information. Wherein, the device and method can be applied to a communication system using quadrature amplitude modulation (QAM).

[0047] see image 3 , which is a functional block diagram of the signal receiving end of the communication system of the present invention. The signal receiving end 310 of the present invention includes but is not limited to a channel estimation unit 131, an equalizer 132, a soft decision demodulation circuit 133, a sof...

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Abstract

The invention discloses a signal receiving end of a communication system capable of adaptively adjusting soft information and a signal processing method thereof. The signal receiving end of the communication system receives a modulated signal and includes: a demodulation circuit for demodulating the modulated signal signal to generate a plurality of packets, and generate a plurality of soft information corresponding to each packet; a soft information adjustment circuit, coupled to the demodulation circuit, used for according to a distribution of the soft information corresponding to each packet The soft information is adjusted; a quantizer, coupled to the soft information adjustment circuit, is used to quantize the adjusted soft information to generate a plurality of data; and a decoder, coupled to the quantizer, is used to decode the data.

Description

technical field [0001] The present invention relates to a signal receiving end of a communication system, in particular to a signal receiving end capable of adaptively adjusting soft information and a signal processing method thereof. Background technique [0002] see figure 1 , which is a functional block diagram of a signal receiving end of a known communication system. After the transmission signal S transmitted by the transmitting end (not shown) is transmitted through the channel 110 (with the channel effect H) and the noise N is added during the transmission (represented by the adder 120), the signal receiving end 130 receives the input signal Y =HS+N, the channel estimation unit 131 estimates the channel effect H' experienced by the input signal Y according to the input signal Y, and then the equalizer 132 can restore the input signal Y according to the channel effect H' to obtain the modulated signal S' =Y / H'=(HS+N) / H'. Assuming that H' is quite close to H, the mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/16
Inventor 苏裕哲黄姿璇童泰来
Owner MEDIATEK INC