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Communication signal receptor and signal processing method thereof

A communication signal and receiver technology, applied in the shaping network of the transmitter/receiver, baseband system components, etc., can solve the problems that the Viterbi decoder cannot obtain coding gain, complexity increase, and complex processing, etc.

Active Publication Date: 2011-01-26
REALTEK SEMICON CORP
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Problems solved by technology

Although this method can reduce the influence of error diffusion, using the Viterbi decoder to make decisions together with the feedback equalizer will greatly increase the complexity of the system, and the Viterbi decoder cannot get the best encoding. Gain (that is, the best solution to the maximum likelihood sequence estimation (MLSE))
In U.S. Patent No. 7,453,935, only one feedback equalizer is used, which can reduce the cost of a feedback equalizer, but makes the back-end processing more complicated

Method used

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  • Communication signal receptor and signal processing method thereof
  • Communication signal receptor and signal processing method thereof
  • Communication signal receptor and signal processing method thereof

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Embodiment Construction

[0022] Please refer to figure 1 , figure 1 It is a schematic diagram of the first embodiment of the communication signal receiver 100 of the present invention. Such as figure 1 As shown, the communication signal receiver 100 includes an adaptive processing circuit 110 and a decoder 180 . In this embodiment, the adaptive processing circuit 110 can be a decision feedback equalizer (decision feedback equalizer, DFE), but this is not a limitation of the present invention, and can also be other types of processing circuits. The adaptive processing circuit 110 includes (but not limited to) a feedforward equalizer 120, a first adder 130, a data slicer (slicer) 140, an infinite impulse response (infinite impulse response, IIR) filter 150 and a second adder 160.

[0023] Feedforward equalizer 120 receives an input signal S IN , and according to the input signal S IN Generate the first signal S1, for example: eliminate the input signal S IN The pre-cursor (pre-cursor) components ...

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Abstract

The invention discloses a communication signal receptor which comprises a summator, a data slicer and an infinite impulse response filter, wherein the summator carries out add operation on a first signal and a filtered signal so as to generate an output signal; the data slicer carries out a strict decision on the output signal so as to generate a detection result; the infinite impulse response filter is coupled with the data slicer and the summator, and is used for processing the output signal to generate the filtered signal; the communication signal receptor also comprises a decoder which isused for receiving and decoding the output signal so as to generate a decoded output signal; and the decoder is a Vitebi decoder.

Description

technical field [0001] The present invention relates to a communication signal receiver and its signal processing method, especially to a device and method that uses an infinite impulse response filter instead of a feedback equalizer to reduce the complexity of the back-end decoder and improve the overall system performance . Background technique [0002] A general communication signal receiver usually includes the following blocks: a matched filter, a timing recovery, an equalizer, an interference canceller and a decoder. In order for these blocks to find the correct parameters to operate, it is usually necessary to transmit known data through the other party, and find the appropriate parameters in a data-aided way. However, in the standard specification of IEEE 802.3, these blocks are not adjusted by transmitting known data, so a decision-directed method must be used to adjust parameters. [0003] Common equalizers currently include a linear feedforward equalizer (LE) an...

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Application Information

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IPC IPC(8): H04L25/03H04L25/02
Inventor 黄亮维徐子瀚郭协星
Owner REALTEK SEMICON CORP
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