CN102959891B - A signal processing method, a system, and a receiving terminal - Google Patents

A signal processing method, a system, and a receiving terminal Download PDF

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Publication number
CN102959891B
CN102959891B CN201280001019.7A CN201280001019A CN102959891B CN 102959891 B CN102959891 B CN 102959891B CN 201280001019 A CN201280001019 A CN 201280001019A CN 102959891 B CN102959891 B CN 102959891B
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data
receiving terminal
padding
signal
transmitting terminal
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CN102959891A (en
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孙方林
潘众
赵泉波
徐贵今
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

A signal processing method, a system, a transmitting terminal, and a receiving terminal are provide, wherein the method comprises: receiving signals passing through a channel; demodulating the signals; first filling data is replaced as second filling data in filling position of the signals; and carrying out correction decoding. The system comprises the receiving terminal and the transmitting terminal, wherein the receiving terminal comprises: a receiving module used for receiving the signals passing through the channel; a demodulating module used for demodulating the signals; a replacing module used for replacing the first filling data with the second filling data; and a decoding module used for carrying out correction decoding process. The method and system can replacing the errorable first filling data with the reliable second filling data without correction decoding before correction decoding the received signals, so correction decoding capacity is centered on useful data, and effective coding gain is improved.

Description

A kind of signal processing method, system and receiving terminal
Technical field
The present invention relates to communication technical field, be specifically related to a kind of signal processing method, system and transmitting terminal and receiving terminal.
Background technology
In existing communication system, owing to may be subject to the impact of various interference and other factors in signal communication process, receiving terminal receives and the information that demodulation obtains may occur mistake, and namely mistake has appearred in information in communication process.
For improving information transmission reliability, widely use the channel coding technology with certain error correcting capability in a communications system.Chnnel coding is to match with the statistical property of channel, and distinguish path and improve the reliability communicated, and on the basis of message sink coding, add the supervise code element that some are new according to certain rules, to realize the coding of error correction, as Reed-Solomon code (Read-Solomon), the error correction codings such as convolution code (Convolution codes).The basic implementation method of above-mentioned channel coding technology is, at transmitting terminal, information (information code element) to be sent is enclosed some supervise code elements, interrelated or the constraint with certain rule determined between supervise code element and information code element, receiving terminal is according to the relation between set regular check information code element and supervise code element, once transmission makes a mistake, then the relation of information code element and supervise code element is just damaged, thus receiving terminal can find mistake and even correct a mistake.
In addition, in point-to-point communication system (such as DSL etc.), the line speed of physical layer is all generally (being generally the maximum user rate of license) of comparatively fixing, and the speed of real data to be sent (also can be described as actual traffic data, namely user needs user data or the management data of transmission) might not be uniform speed.Match to make the fixed line speed of the speed of real data to be sent and physical layer, one of processing method the most frequently used at present carries out idle data to sent real data to fill process, namely be the padding data of filling certain byte number or bit number in real data, wherein padding data is generally idle data and dummy argument (dummy/idle), after being filled with padding data, real data and padding data together carry out error correction coding as information code element.
In prior art, common signal processing method is: the padding data of first real data being filled to certain byte number or bit number at transmitting terminal, and then error correction coding process is carried out to the information code element obtained after filling, modulate subsequently and send, wherein can also comprise the steps such as scrambler process; After transmission, carry out the process of solution mediation error correction decoding at receiving terminal to the information code element received, if wherein transmitting terminal includes scrambler process, so also need to carry out scramble process, processing method of the prior art has following shortcoming:
Real data (business or management data) and padding data (data as not busy in dummy/empty) is included, because real data and padding data all likely occur mistake in transmission process in information code element.Therefore the data of the real data that comprises the information code element obtained after demodulation of receiving terminal and filling all carry out error correction decoding process, but in fact only have real data to be the data that we finally need, and this just causes the waste of certain error correcting capability.
Summary of the invention
Embodiment of the present invention technical problem to be solved is to provide a kind of signal processing method, system and transmitting terminal and receiving terminal, for improving efficient coding gain.
The embodiment of the present invention provides a kind of signal processing method, comprising:
The signal through transmission that receiving terminal receiving end/sending end sends, the described signal through transmission comprises the first real data and the first padding data; Wherein, described first real data is that the second real data sent by described transmitting terminal changes and obtains in transmission process, and described first padding data is changed in transmission process by described transmitting terminal the second padding data inserted in described second real data to obtain;
The described signal through transmission is carried out signal receiving by described receiving terminal, to obtain the first data;
Described first padding data on filling position in described first data is replaced with described second padding data, to obtain the second data by described receiving terminal;
Described receiving terminal carries out error correction decoding process to described second data.
Accordingly, the embodiment of the present invention also provides a kind of signal processing system, comprises transmitting terminal and receiving terminal,
Described transmitting terminal is used for inserting described second padding data in the second real data to be sent;
Described transmitting terminal is also for carrying out error correction coding process to the data obtained after described second padding data of described insertion;
Described transmitting terminal is also for carrying out signal madulation to the data obtained after described error correction coding process;
Described transmitting terminal is also for being sent to described receiving terminal by the signal obtained after described signal madulation;
Described receiving terminal is used for the signal through transmission that receiving end/sending end sends;
Described receiving terminal also for the described signal through transmission is carried out signal receiving, to obtain the first data;
Described receiving terminal is also for replacing with described second padding data, to obtain the second data by described first padding data on the filling position in described first data;
Described receiving terminal is also for carrying out error correction decoding process to described second data.
Accordingly, the embodiment of the present invention also provides a kind of transmitting terminal, and described transmitting terminal comprises:
Packing module, for inserting described second padding data in the second real data to be sent;
Coding module, for carrying out error correction coding process to the data exported from described packing module;
Modulation module, for carrying out signal madulation to the data exported from described coding module;
Sending module, the signal for being exported by described modulation module is sent to described receiving terminal.
Accordingly, the embodiment of the present invention also provides a kind of receiving terminal, and described receiving terminal comprises:
Receiver module, for the signal through transmission that receiving end/sending end sends, the described signal through transmission comprises the first real data and the first padding data; Wherein, described first real data is that the second real data sent by described transmitting terminal changes and obtains in transmission process, and described first padding data is changed in transmission process by described transmitting terminal the second padding data inserted in described second real data to obtain;
Demodulation module, for carrying out signal receiving by the described signal through transmission;
Replacement module, described first padding data on the filling position in the data exported by described demodulation module replaces with described second padding data;
Decoder module, carries out error correction decoding process for the data exported described replacement module.
In the embodiment of the present invention before receiving terminal carries out error correction decoding to the information code element received, to may occur in transmission process in information code element that the first padding data of mistake replaces with the second padding data of transmitting terminal filling, thus without the need to carrying out error correction decoding to the first padding data, can the error correcting capability of error correction decoding be focused in really useful real data, improve the efficient coding gain of data.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described to the accompanying drawing used required in the embodiment of the present invention below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of signal processing method first embodiment of the present invention;
Fig. 2 is the flow chart of signal processing method second embodiment of the present invention;
Fig. 3 is the flow chart of signal processing method of the present invention 3rd embodiment;
Fig. 4 is the flow chart of signal processing method of the present invention 4th embodiment;
Fig. 5 is the flow chart of signal processing method of the present invention 5th embodiment;
Fig. 6 is the flow chart of signal processing method of the present invention 6th embodiment;
Fig. 7 is the flow chart of signal processing method of the present invention 7th embodiment;
Fig. 8 is the flow chart of signal processing method of the present invention 8th embodiment;
Fig. 9 is the flow chart of signal processing method of the present invention 9th embodiment;
Figure 10 is the flow chart of signal processing method of the present invention tenth embodiment;
Figure 11 is the structured flowchart of transmitting terminal first embodiment of the present invention;
Figure 12 is the detailed block diagram of transmitting terminal first embodiment of the present invention;
Figure 13 is the structured flowchart of transmitting terminal second embodiment of the present invention;
Figure 14 is the detailed block diagram of transmitting terminal second embodiment of the present invention;
Figure 15 is the structured flowchart of transmitting terminal of the present invention 3rd embodiment;
Figure 16 is the detailed block diagram of transmitting terminal of the present invention 3rd embodiment;
Figure 17 is the structured flowchart of transmitting terminal of the present invention 4th embodiment;
Figure 18 is the detailed block diagram of transmitting terminal of the present invention 4th embodiment;
Figure 19 is the structured flowchart of transmitting terminal of the present invention 5th embodiment;
Figure 20 is the detailed block diagram of transmitting terminal of the present invention 5th embodiment;
Figure 21 is the structured flowchart of receiving terminal first embodiment of the present invention;
Figure 22 is the detailed block diagram of receiving terminal first embodiment of the present invention;
Figure 23 is the structured flowchart of receiving terminal second embodiment of the present invention;
Figure 24 is the detailed block diagram of receiving terminal second embodiment of the present invention;
Figure 25 is the structured flowchart of receiving terminal of the present invention 3rd embodiment;
Figure 26 is the detailed block diagram of receiving terminal of the present invention 3rd embodiment;
Figure 27 is the structured flowchart of receiving terminal of the present invention 4th embodiment;
Figure 28 is the detailed block diagram of receiving terminal of the present invention 4th embodiment;
Figure 29 is the structured flowchart of receiving terminal of the present invention 5th embodiment;
Figure 30 is the detailed block diagram of receiving terminal of the present invention 5th embodiment;
Figure 31 is the structured flowchart of signal processing system embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing of the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
A kind of signal processing method is provided in the embodiment of the present invention, system and transmitting terminal and receiving terminal, its main thought is before receiving terminal carries out error correction decoding to the signal received, the padding data (the second padding data) of filling before first the padding data (the first padding data) may made mistakes in transmitting procedure on filling position in the signal of reception being replaced with Signal transmissions, therefore just error correction need not be carried out to padding data when carrying out error correction decoding to signal subsequently, error correcting capability can be concentrated in really useful real data, thus improve efficient coding gain.Below be described in detail respectively.
In following embodiment, byte of padding or the second padding data can be idle data or other specific data, such as, identify the repetition byte of filling position, the idle cell (idle cell) of ATM, 0016 or 7E16 etc.
Signal madulation/the demodulation mode adopted in following embodiment includes but not limited at least one with under type: OFDM (OFDM, Orthogonal Frequency Division Multiplexing), OFDM (OFDMA, Orthogonal Frequency Division Multiple Access), wavelet transform OFDM (DWT-OFDM, Discrete Wavelet Transform Orthogonal Frequency Division Multiplexing), differential phase-shift keying (DPSK) (DP SK, Differential Phase Shift Keying) or orthogonal amplitude keying (QAM, Quadrature Amplitude Modulation) etc.
The correction coding/decoding mode adopted in following embodiment includes but not limited at least one of following manner: low-density checksum (LDPC, Low Density Parity Check Code), Reed Solomon Coding (RS, Reed-Solomon code) or TURBO code etc.
In following embodiment, filling position (i.e. the position of the first or second padding data insertion) before or after real data, can certainly be positioned at the centre of real data.Concrete filling position, those skilled in the art can select according to actual conditions.
It should be noted that, in communication technical field, data can be called signal after ovennodulation, and signal can become data after demodulation.
Below signal processing method provided by the invention is described in detail:
With reference to figure 1, the inventive method first embodiment, provides a kind of signal processing method, comprises the following steps:
Step 101, receiving step, i.e. the signal through transmission of receiving terminal receiving end/sending end transmission; What receive includes the first real data and the first padding data in the signal of transmission, and the filling position of described first padding data can be before or after the first real data, can certainly be inserted in the first real data.Wherein, first real data is that the second real data sent by transmitting terminal obtains through possible change in transmission process, first padding data was obtained through possible change in transmission process the second padding data that the second real data is filled before sending signal by transmitting terminal, may affect the above-mentioned change causing the second real data and the second padding data in transmission process due to fading channel and noise etc.;
Step 102, demodulation step, namely the signal through transmission received is carried out signal receiving, to obtain the first data by above-mentioned receiving terminal;
Step 103, replacement step, namely the first padding data on filling position in above-mentioned first data is replaced with the second padding data by above-mentioned receiving terminal, to obtain the second data;
Step 104, decoding step, namely above-mentioned receiving terminal is to above-mentioned second correcting data error decoding process.
What describe in the present embodiment is the handling process of receiving terminal, and its core concept is, before receiving terminal carries out error correction decoding to the signal received, the first padding data on filling position to be replaced with the second padding data.Wherein the second padding data is transmitting terminal original padding data to the second real data filling before sending signal, second padding data is arranged on the filling position of the second real data, after transmission, mistake may be there is due to the signal attenuation in transmitting procedure and noise or other reasons, the signal possibility that the signal that receiving terminal receives may send with transmitting terminal is also inconsistent, wherein the first real data and the second real data may be inconsistent, first padding data and the second padding data also may be inconsistent, the way of prior art is that the first real data and the first padding data are all carried out error correction decoding, and in the present embodiment, the first padding data is replaced with the second padding data before error correction decoding, then just without the need to carrying out error correction decoding to the first padding data, and the ability of error correction decoding is concentrated in useful real data (the first real data), efficient coding gain can be improved.
Further, in method, also can comprise the corresponding handling process of transmitting terminal, ask for an interview the inventive method second embodiment below.
With reference to figure 2, the inventive method second embodiment, provides a kind of signal processing method, comprises the following steps:
Step 201, filling step, namely transmitting terminal inserts the second padding data in the second real data to be sent;
Step 202, coding step, namely above-mentioned transmitting terminal carries out error correction coding process to the data obtained after above-mentioned insertion second padding data;
Step 203, modulation step, namely above-mentioned transmitting terminal carries out signal madulation to the data obtained after above-mentioned error correction coding process;
Step 204, forwarding step, namely the signal obtained after above-mentioned signal madulation is sent to receiving terminal by above-mentioned transmitting terminal;
Step 205, receiving step, namely above-mentioned receiving terminal receives the signal through transmission that above-mentioned transmitting terminal sends;
Step 206, demodulation step, namely the above-mentioned signal through transmission is carried out signal receiving by above-mentioned receiving terminal, to obtain the first data;
Step 207, replacement step, namely the first padding data on filling position in above-mentioned first data is replaced with above-mentioned second padding data by above-mentioned receiving terminal, to obtain the second data;
Step 208, decoding step, namely above-mentioned receiving terminal is to above-mentioned second correcting data error decoding process.
In the present embodiment, step 201 is the treatment step of transmitting terminal to 204, and step 205 is the treatment step of receiving terminal to 208, and step 205 is to the step 101 in 208 and method first embodiment to 104 one_to_one corresponding.
It should be noted that, the signal that transmitting terminal sends receiving end after transmission receives, due to the error of transmission that may occur in transmission, the signal that receiving terminal receives and the signal that transmitting terminal sends may and inconsistent, the data wherein transmitted (comprise business, management and padding data) all likely there occurs change, and in the present embodiment before error correction decoding, first padding data of filling position in the signal received is replaced with the second padding data that transmitting terminal inserts on filling position, thus without the need to carrying out error correction decoding to padding data, and the ability of error correction decoding is concentrated in useful real data, efficient coding gain can be improved.
Preferably, transmitting terminal also can increase the scrambler process to data, and corresponding receiving terminal can increase the scramble process to data, and the method the 3rd below asked for an interview is to the 5th embodiment.
With reference to figure 3, the inventive method the 3rd embodiment, provides a kind of signal processing method, comprises the following steps:
Step 301, scrambler step, namely transmitting terminal carries out scrambler process to sent the second real data;
Step 302, filling step, namely above-mentioned transmitting terminal inserts the second padding data in the second real data after scrambler process;
Step 303, coding step, namely above-mentioned transmitting terminal carries out error correction coding process to the data obtained after above-mentioned insertion second padding data;
Step 304, modulation step, namely above-mentioned transmitting terminal carries out signal madulation to the data obtained after above-mentioned error correction coding process;
Step 305, forwarding step, namely the signal obtained after above-mentioned signal madulation is sent to receiving terminal by above-mentioned transmitting terminal;
Step 306, receiving step, namely above-mentioned receiving terminal receives the signal through transmission that above-mentioned transmitting terminal sends;
Step 307, demodulation step, namely the above-mentioned signal through transmission is carried out signal receiving by above-mentioned receiving terminal, to obtain the first data;
Step 308, replacement step, namely the first padding data on filling position in above-mentioned first data is replaced with above-mentioned second padding data by above-mentioned receiving terminal, to obtain the second data;
Step 309, decoding step, namely above-mentioned receiving terminal carries out error correction decoding process to above-mentioned second data, to obtain the 3rd data;
After error correction decoding process, the first real data is reduced into the second real data that transmitting terminal sends;
Step 310, descrambling step, namely above-mentioned receiving terminal carries out scramble process to the second real data comprised in above-mentioned 3rd data.Owing to only having carried out scrambler process to real data at transmitting terminal, therefore also only need to carry out scramble process to real data at receiving terminal.
The present embodiment, compared with method second embodiment, adds scrambler step at transmitting terminal respectively, adds descrambling step at receiving terminal, and scrambler process can make the needs of the more adaptation signal transmission of the signal spectrum after scrambling, also can increase the confidentiality of communication simultaneously; It should be noted that, the scrambler step in the present embodiment and descrambling step are optional step.
With reference to figure 4, the inventive method the 4th embodiment, provides a kind of signal processing method, comprises the following steps:
Step 401, filling step, namely transmitting terminal inserts the second padding data in the second real data to be sent;
Step 402, scrambler step, namely above-mentioned transmitting terminal carries out scrambler process to the data obtained after above-mentioned insertion second padding data;
Step 403, coding step, namely above-mentioned transmitting terminal carries out error correction coding process to the data obtained after above-mentioned scrambler process;
Step 404, modulation step, namely above-mentioned transmitting terminal carries out signal madulation to the data obtained after above-mentioned error correction coding process;
Step 405, forwarding step, namely the signal obtained after above-mentioned signal madulation is sent to receiving terminal by above-mentioned transmitting terminal;
Step 406, receiving step, namely above-mentioned receiving terminal receives the signal through transmission that above-mentioned transmitting terminal sends;
Step 407, demodulation step, namely the above-mentioned signal through transmission is carried out signal receiving by above-mentioned receiving terminal, to obtain the first data;
Step 408, replacement step, namely the first padding data on filling position in above-mentioned first data is replaced with above-mentioned second padding data by above-mentioned receiving terminal, to obtain the second data;
Step 409, decoding step, namely above-mentioned receiving terminal carries out error correction decoding process to above-mentioned second data, to obtain the 3rd data;
Step 410, scramble process, namely above-mentioned receiving terminal carries out scramble process to above-mentioned 3rd data.
The present embodiment is compared with method the 3rd embodiment, and the position on stream of scrambler step and descrambling step is different; It should be noted that, the scrambler step in the present embodiment and descrambling step are optional step.
With reference to figure 5, the inventive method the 5th embodiment, provides a kind of signal processing method, comprises the following steps:
Step 501, filling step, namely transmitting terminal inserts the second padding data in the second real data to be sent;
Step 502, coding step, namely above-mentioned transmitting terminal carries out error correction coding process to the data obtained after above-mentioned insertion second padding data;
Step 503, scrambler step, namely above-mentioned transmitting terminal carries out scrambler process to the data obtained after above-mentioned error correction coding process;
Step 504, modulation step, namely above-mentioned transmitting terminal carries out signal madulation to the data obtained after above-mentioned scrambler process;
Step 505, forwarding step, namely the signal obtained after above-mentioned signal madulation is sent to receiving terminal by above-mentioned transmitting terminal;
Step 506, receiving step, namely above-mentioned receiving terminal receives the signal through transmission that above-mentioned transmitting terminal sends;
Step 507, demodulation step, namely the above-mentioned signal through transmission is carried out signal receiving by above-mentioned receiving terminal, to obtain the first data;
Step 508, descrambling step, namely above-mentioned receiving terminal carries out scramble process to above-mentioned first data;
Step 509, replacement step, namely the first padding data on filling position in the data obtained after above-mentioned scramble process is replaced with above-mentioned second padding data by above-mentioned receiving terminal, to obtain the second data;
Step 510, decoding step, namely above-mentioned receiving terminal carries out error correction decoding process to above-mentioned second data.
Compared with third and fourth embodiment of the present embodiment and method, scrambler step and descrambling step are different on stream; It should be noted that, the scrambler step in the present embodiment and descrambling step are optional step.
Said method the 3rd is in the 5th embodiment, the scrambler treatment step at transmitting terminal and the scramble process step at receiving terminal are included, but scrambler treatment step and the position of descrambling treatment step in signal processing flow different, those of ordinary skill in the art can wherein one or more be implemented according to actual conditions selection, certainly also can increase respectively to interweave at transmitting terminal and receiving terminal and conciliate interleaving steps, the 6th embodiment is specifically described below.
With reference to figure 6, the inventive method the 6th embodiment, provides a kind of signal processing method, comprises the following steps:
Step 601, filling step, namely transmitting terminal inserts the second padding data in the second real data to be sent;
Step 602, coding step, namely above-mentioned transmitting terminal carries out error correction coding process to the data obtained after above-mentioned insertion second padding data;
Step 603, interleaving steps, namely above-mentioned transmitting terminal carries out interleaving treatment to the data obtained after above-mentioned error correction coding process;
Step 604, modulation step, namely above-mentioned transmitting terminal carries out signal madulation to the data obtained after above-mentioned interleaving treatment;
Step 605, forwarding step, namely the signal obtained after above-mentioned signal madulation is sent to receiving terminal by above-mentioned transmitting terminal;
Step 606, receiving step, namely above-mentioned receiving terminal receives the signal through transmission that above-mentioned transmitting terminal sends;
Step 607, demodulation step, namely the above-mentioned signal through transmission is carried out signal receiving by above-mentioned receiving terminal, to obtain the first data;
Step 608, deinterleaving step, namely above-mentioned receiving terminal carries out deinterleaving process to above-mentioned first data;
Step 609, replacement step, namely the first padding data on filling position in the data obtained after above-mentioned deinterleaving process is replaced with above-mentioned second padding data by above-mentioned receiving terminal, to obtain the second data;
Step 610, decoding step, namely above-mentioned receiving terminal carries out error correction decoding process to above-mentioned second data.
Needs illustrate, the interleaving steps of transmitting terminal and the deinterleaving step of receiving terminal are not limited to the order described in the present embodiment, before interleaving steps also can be positioned at filling step or coding step, accordingly, after deinterleaving step also can be positioned at replacement step or decoding step, those of ordinary skill in the art can do suitable setting according to actual conditions.
It should be noted that, it is optional step that the interleaving steps in the present embodiment conciliates interleaving steps.
Further, filling step can specifically comprise rate adapted step and inserting step, and replacement step can comprise detecting step and displacement step accordingly, below method the 7th carried out concrete description to the tenth embodiment.
With reference to figure 7, the inventive method the 7th embodiment, provides a kind of signal processing method, comprises the following steps:
Step 701, rate adapted step, namely transmitting terminal obtains the speed of the second real data to be sent and the fixed line speed of physical layer, according to the above-mentioned speed of the second real data to be sent and the fixed line speed of above-mentioned physical layer, determine the length needing padding data;
Step 702, inserting step, namely above-mentioned transmitting terminal inserts the second padding data of designated length in above-mentioned second real data to be sent, suitable with the fixed line speed of the speed of the information code element (comprising above-mentioned the second real data to be sent and the second padding data) obtained after making insertion second padding data and physical layer; Wherein, above-mentioned designated length is the above-mentioned length needing padding data;
Step 703, coding step, namely above-mentioned transmitting terminal carries out error correction coding process to the data obtained after the second padding data of above-mentioned insertion designated length;
Step 704, modulation step, namely above-mentioned transmitting terminal carries out signal madulation to the data obtained after above-mentioned error correction coding process;
Step 705, forwarding step, namely the signal obtained after above-mentioned signal madulation is sent to receiving terminal by above-mentioned transmitting terminal;
Step 706, receiving step, i.e. the signal through transmission of above-mentioned receiving terminal receiving end/sending end transmission;
Step 707, demodulation step, namely the signal through transmission received is carried out signal receiving, to obtain the first data by above-mentioned transmitting terminal;
Step 708, detecting step, namely above-mentioned receiving terminal detects the filling position in above-mentioned first data;
Step 709, displacement step, namely the first padding data on filling position in above-mentioned first data is replaced with above-mentioned second padding data by above-mentioned receiving terminal, to obtain the second data;
Step 710, decoding step, namely above-mentioned receiving terminal carries out error correction decoding process to above-mentioned second data.
This enforcement, compared with method second embodiment, specifically further describes filling step and replacement step.
With reference to figure 8, the inventive method the 8th embodiment, provides a kind of signal processing method, comprises the following steps:
Step 801, rate adapted step, namely transmitting terminal obtains the speed of the second real data to be sent and the fixed line speed of physical layer, according to the above-mentioned speed of the second real data to be sent and the fixed line speed of above-mentioned physical layer, determine the length needing padding data;
Step 802, scrambler step, namely above-mentioned transmitting terminal carries out scrambler process to sent the second real data;
Step 803, inserting step, namely the second padding data of designated length is inserted in second real data to be sent of above-mentioned transmitting terminal after above-mentioned scrambler process, suitable with the fixed line speed of the speed of the information code element (comprising above-mentioned real data to be sent and the second padding data) obtained after making insertion second padding data and physical layer; Wherein above-mentioned designated length is the above-mentioned length needing padding data;
Step 804, coding step, namely above-mentioned transmitting terminal carries out error correction coding process to the data obtained after the second padding data of above-mentioned insertion designated length;
Step 805, modulation step, namely above-mentioned transmitting terminal carries out signal madulation to the data obtained after above-mentioned error correction coding process;
Step 806, forwarding step, namely the signal obtained after above-mentioned signal madulation is sent to receiving terminal by above-mentioned transmitting terminal;
Step 807, receiving step, namely above-mentioned receiving terminal receives the signal through transmission that above-mentioned transmitting terminal sends;
Step 808, demodulation step, namely the signal through transmission received is carried out signal receiving, to obtain the first data by above-mentioned receiving terminal;
Step 809, detecting step, namely above-mentioned receiving terminal detects the filling position in above-mentioned first data;
Step 810, displacement step, namely the first padding data on filling position in above-mentioned first data is replaced with above-mentioned second padding data by above-mentioned receiving terminal, to obtain the second data;
Step 811, decoding step, namely above-mentioned receiving terminal carries out error correction decoding process to above-mentioned second data, to obtain the 3rd data;
Step 812, descrambling step, namely above-mentioned receiving terminal carries out scramble process to the second real data comprised in above-mentioned 3rd data.
It should be noted that, the scrambler step in the present embodiment and descrambling step are optional step.
This enforcement, compared with method the 3rd embodiment, specifically further describes filling step and replacement step.
With reference to figure 9, the inventive method the 9th embodiment, provides a kind of signal processing method, comprises the following steps:
Step 901, rate adapted step, namely transmitting terminal obtains through the speed of the second real data to be sent and the fixed line speed of physical layer, according to the above-mentioned speed of the second real data to be sent and the fixed line speed of above-mentioned physical layer, determine the length needing padding data;
Step 902, inserting step, namely above-mentioned transmitting terminal inserts the second padding data of designated length in above-mentioned second real data to be sent, suitable with the fixed line speed of the speed of the information code element (comprising above-mentioned the second real data to be sent and the second padding data) obtained after making insertion second padding data and physical layer; Wherein above-mentioned designated length is the above-mentioned length needing padding data;
Step 903, scrambler step, namely above-mentioned transmitting terminal carries out scrambler process to the data obtained after the second padding data of above-mentioned insertion designated length;
Step 904, coding step, namely above-mentioned transmitting terminal carries out error correction coding process to the data obtained after above-mentioned scrambler process;
Step 905, modulation step, namely above-mentioned transmitting terminal carries out signal madulation to the data obtained after above-mentioned error correction coding process;
Step 906, forwarding step, namely the signal obtained after above-mentioned signal madulation is sent to receiving terminal by above-mentioned transmitting terminal;
Step 907, receiving step, i.e. the signal through transmission of above-mentioned receiving terminal receiving end/sending end transmission;
Step 908, demodulation step, namely the signal through transmission received is carried out signal receiving, to obtain the first data by above-mentioned receiving terminal;
Step 909, detecting step, namely above-mentioned receiving terminal detects the filling position in above-mentioned first data;
Step 910, displacement step, namely the first padding data on filling position in above-mentioned first data is replaced with above-mentioned second padding data by above-mentioned receiving terminal, to obtain the second data;
Step 911, decoding step, namely above-mentioned receiving terminal carries out error correction decoding process to above-mentioned second data, to obtain the 3rd data;
Step 912, descrambling step, namely above-mentioned receiving terminal carries out scramble process to above-mentioned 3rd data.
It should be noted that, the scrambler step in the present embodiment and descrambling step are optional step.
This enforcement, compared with method the 4th embodiment, specifically further describes filling step and replacement step.
With reference to Figure 10, the inventive method the tenth embodiment, provides a kind of signal processing method, comprises the following steps:
Step 1001, rate adapted step, namely transmitting terminal obtains the speed of the second real data to be sent and the fixed line speed of physical layer, according to the above-mentioned speed of the second real data to be sent and the fixed line speed of above-mentioned physical layer, calculate the length needing padding data;
Step 1002, inserting step, namely above-mentioned transmitting terminal inserts the second padding data of designated length in above-mentioned second real data to be sent, suitable with the fixed line speed of the speed of the information code element (comprising above-mentioned the second real data to be sent and the second padding data) obtained after making insertion second padding data and physical layer; Above-mentioned designated length is the above-mentioned length needing padding data;
Step 1003, coding step, namely above-mentioned transmitting terminal carries out error correction coding process to the data obtained after above-mentioned insertion second padding data;
Step 1004, scrambler step, namely above-mentioned transmitting terminal carries out scrambler process to the data obtained after above-mentioned error correction coding process;
Step 1005, modulation step, namely above-mentioned transmitting terminal carries out signal madulation to the data obtained after above-mentioned scrambler process;
Step 1006, forwarding step, namely the signal obtained after above-mentioned signal madulation is sent to receiving terminal by above-mentioned transmitting terminal;
Step 1007, receiving step, namely above-mentioned receiving terminal receives the signal through transmission that above-mentioned transmitting terminal sends;
Step 1008, demodulation step, namely above-mentioned receiving terminal carries out signal receiving to the above-mentioned signal through transmission, to obtain the first data;
Step 1009, descrambling step, namely above-mentioned receiving terminal carries out scramble process to above-mentioned first data;
Step 1010, detecting step, the filling position namely in the data that obtain after detecting above-mentioned scramble process of above-mentioned receiving terminal;
Step 1011, displacement step, namely the first padding data on filling position in the data obtained after above-mentioned scramble process is replaced with above-mentioned second padding data by above-mentioned receiving terminal, to obtain the second data;
Step 1010, decoding step, namely above-mentioned receiving terminal carries out error correction decoding process to above-mentioned second data.
It should be noted that, the scrambler step in the present embodiment and descrambling step are optional step.
The present embodiment, compared with method the 5th embodiment, specifically further describes filling step and replacement step.
Said method the 7th to the tenth embodiment, compared with the said method second to the 5th embodiment, further refinement filling step and replacement step, wherein, filling step comprises:
Rate adapted step, namely transmitting terminal obtains the speed of the second real data to be sent and the fixed line speed of physical layer, according to the above-mentioned speed of the second real data to be sent and the fixed line speed of above-mentioned physical layer, calculate the length needing padding data;
Inserting step, namely above-mentioned transmitting terminal inserts the second padding data of designated length in above-mentioned second real data to be sent, suitable with the fixed line speed of the speed of the information code element (comprising the second real data to be sent and the second padding data) obtained after making insertion second padding data and physical layer; Above-mentioned designated length is the above-mentioned length needing padding data.
Replacement step comprises:
Detecting step, namely above-mentioned receiving terminal detects the filling position in the above-mentioned data obtained after signal receiving;
Displacement step, namely the first padding data on filling position in the above-mentioned data obtained after signal receiving is replaced with above-mentioned second padding data by above-mentioned receiving terminal, to obtain the second data.
Below to signal processing system provided by the invention and comprising transmitting terminal and receiving terminal be described in detail:
It should be noted that, in Figure 11 to Figure 30, k-i represents the second real data to be sent, then i represents the data (the second padding data) of filling at transmitting terminal needs, k represents information code element (comprising the second real data to be sent and byte of padding), n represents the data obtained after error correction coding through information code element, that is to say the signal (or data) that transmitting terminal sends, n ' represents the signal (or data) that receiving terminal receives after transmission, n '-i ' represents the first real data that the signal (or data) that receiving terminal receives comprises, i ' represents the data (the first padding data) in the signal (or data) that receiving terminal receives on filling position.
With reference to Figure 11, transmitting terminal first embodiment of the present invention, provides a kind of transmitting terminal, and this transmitting terminal 1 comprises:
Packing module 11, for inserting the second padding data (i) in the second real data (k-i) to be sent;
Coding module 12, for carrying out error correction coding process to the data (k) exported from packing module 11;
Modulation module 13, for carrying out signal madulation to the data (n) exported from coding module 12;
Sending module 14, sends for the signal (n) exported by modulation module 13.
With reference to Figure 12, further, packing module 11 can comprise:
Rate Adapter Unit 111, for obtaining the speed of the second real data (k-i) to be sent and the fixed line speed of physical layer, according to the speed of the second real data (k-i) to be sent and the fixed line speed of physical layer, determine the length needing padding data; And
Plug-in unit 112, for inserting the second padding data of designated length (i) in the second real data (k-i) to be sent, with make insertion second padding data (i) after the fixed line speed of the speed of information code element (comprise the second real data (k-i) to be sent and the second padding data (i)) that obtains and physical layer suitable; Above-mentioned designated length is the above-mentioned length needing padding data; The filling position of the second padding data can pre-set, can before or after the second real data, also can in the second real data.
Further, in aforesaid transmitting terminal, in order to make signal spectrum more adaptation signal transmission needs, also in order to increase the confidentiality of communication, transmitting terminal can comprise scrambler module to carry out scrambler process to signal (data) before signal sends, and is below described in detail.
Needs illustrate, the scrambler module in following embodiment is optional module.
With reference to Figure 13, transmitting terminal second embodiment of the present invention, provides a kind of transmitting terminal, and this transmitting terminal 1 comprises:
Scrambler module 15, for carrying out scrambler process to sent the second real data (k-i);
Packing module 11, inserts the second padding data (i) in the data that scrambler module 15 exported;
Coding module 12, for carrying out error correction coding process to the data (k) exported from packing module 11;
Modulation module 13, for carrying out signal madulation to the data (n) exported from coding module 12;
Sending module 14, sends for the signal (n) exported by modulation module 13.
With reference to Figure 14, further, packing module 11 can comprise:
Rate Adapter Unit 111, for the speed of the second real data (k-i) to be sent and the fixed line speed of physical layer, according to the speed of the second real data (k-i) to be sent and the fixed line speed of physical layer, determine the length needing padding data; And
Plug-in unit 112, for inserting the second padding data of designated length (i) in the data (k-i) that export in scrambler module 15, with make insertion second padding data (i) after the fixed line speed of the speed of information code element (comprise data (k-i) that scrambler module 15 exports with the second padding data (i)) that obtains and physical layer suitable; Above-mentioned designated length is the above-mentioned length needing padding data.
With reference to Figure 15, transmitting terminal of the present invention 3rd embodiment, provides a kind of transmitting terminal, and this transmitting terminal 1 comprises:
Packing module 11, for inserting the second padding data (i) in the second real data (k-i);
Scrambler module 15, carries out scrambler process for the data (k) exported packing module 11;
Coding module 12, for carrying out error correction coding process to the data (k) exported from scrambler module 15;
Modulation module 13, for carrying out signal madulation to the data (n) exported from coding module 12;
Sending module 14, sends for the signal (n) exported by modulation module 13.
With reference to Figure 16, further, packing module 11 can comprise:
Rate Adapter Unit 111, for obtaining the speed of the second real data (k-i) to be sent and the fixed line speed of physical layer, according to the speed of the second real data (k-i) to be sent and the fixed line speed of physical layer, determine the length needing padding data; And
Plug-in unit 112, for inserting the second padding data of designated length (i) in the second real data (k-i) to be sent, with make insertion second padding data (i) after the fixed line speed of the speed of information code element (comprise real data (k-i) to be sent and the second padding data (i)) that obtains and physical layer suitable; Above-mentioned designated length is the above-mentioned length needing padding data.
With reference to Figure 17, transmitting terminal of the present invention 4th embodiment, provides a kind of transmitting terminal, and this transmitting terminal 1 comprises:
Packing module 11, for inserting byte of padding (i) in the second real data (k-i);
Coding module 12, carries out error correction coding process for the data (k) exported packing module 11;
Scrambler module 15, carries out scrambler process for the data (n) exported coding module 12;
Modulation module 13, for carrying out signal madulation to the data (n) exported from scrambler module 15;
Sending module 14, sends for the signal (n) exported by modulation module 13.
With reference to Figure 18, further, packing module 11 can comprise:
Rate Adapter Unit 111, for obtaining the speed of the second real data (k-i) to be sent and the fixed line speed of physical layer, according to the speed of the second real data (k-i) to be sent and the fixed line speed of physical layer, determine the length needing padding data; And
Plug-in unit 112, for inserting the second padding data of designated length (i) in the second real data (k-i) to be sent, with make insertion second padding data (i) after the fixed line speed of the speed of information code element (comprise real data (k-i) to be sent and the second padding data (i)) that obtains and physical layer suitable; Above-mentioned designated length is the above-mentioned length needing padding data.
Above transmitting terminal second has included scrambler module 15 to the transmitting terminal in the 5th embodiment, its difference is that the position of scrambler module 15 in the handling process of transmitting terminal 1 pair of signal (or data) is different, and those of ordinary skill in the art can wherein one or more be implemented according to actual conditions selection.
Further, transmitting terminal also can comprise interleaving block, to realize, to the interleaving treatment of signal, being below specifically described.
With reference to Figure 19, transmitting terminal of the present invention 5th embodiment, provides a kind of transmitting terminal, and this transmitting terminal 1 comprises:
Packing module 11, for inserting byte of padding (i) in the second real data (k-i);
Coding module 12, carries out error correction coding process for the data (k) exported packing module 11;
Interleaving block 16, carries out interleaving treatment for the data (n) exported coding module 12;
Modulation module 13, for carrying out signal madulation to the data (n) exported from interleaving block 16;
Sending module 14, sends for the signal (n) exported by modulation module 13.
With reference to Figure 20, further, packing module 11 specifically comprises:
Rate Adapter Unit 111, for obtaining the speed of the second real data (k-i) to be sent and the fixed line speed of physical layer, according to the speed of the second real data (k-i) to be sent and the fixed line speed of physical layer, determine the length needing padding data; And
Plug-in unit 112, for inserting the second padding data of designated length (i) in the second real data (k-i) to be sent, with make insertion second padding data (i) after the fixed line speed of the speed of information code element (comprise the second real data (k-i) to be sent and the second padding data (i)) that obtains and physical layer suitable; Above-mentioned designated length is the above-mentioned length needing padding data.
It should be noted that, the interleaving block of transmitting terminal is not limited to the order described in the present embodiment to the position in the handling process of signal (or data) in transmitting terminal, as interleaving block also can be positioned at packing module or coding module before signal (or data) is processed, those of ordinary skill in the art can do suitable setting according to actual conditions.
It should be noted that, the interleaving block in the present embodiment is optional module.
Below the receiving terminal 2 corresponding with above-mentioned transmitting terminal 1 is described in detail:
With reference to Figure 21, receiving terminal first embodiment of the present invention, provides a kind of receiving terminal, and corresponding with the transmitting terminal provided in aforesaid transmitting terminal first embodiment, this receiving terminal 2 comprises:
Receiver module 21, for the signal through transmission (n ') that receiving end/sending end sends; The signal through transmission that wherein receiving terminal receives comprises the first real data (n '-i '), and filling position in the first real data includes the first padding data (i '); Before transmission signal, the filling position of transmitting terminal in the second real data (k-i) inserts the second padding data (i), through transmitting terminal to the transmission process of receiving terminal, second real data becomes the first real data (n '-i ') through possible change, and the second padding data (i) becomes the first padding data (i ') through possible change;
Demodulation module 22, carries out signal receiving for the signal through transmission (n ') received by receiver module 21;
Replacement module 23, for replacing with the second padding data (i) by the first padding data (i ') on filling position in the data exported from demodulation module 22 (n '); Due to the second padding data (i) in transmitting procedure due to signal disturbing or other reasons, the first padding data that possible receiving terminal receives (i ') and transmitting terminal second padding data of filling (i) and inconsistent, therefore, the second padding data is used (i) to replace the first padding data (i '), to correct the mistake that may occur in transmission process before the decoding;
Decoder module 24, for the data exported from replacement module 23 (n '-i ', i) carry out error correction decoding process, thus obtain need the second real data (k-i).Because the first padding data (i ') is replaced with the second padding data (i) by replacement module 23 before carrying out error correction decoding at decoder module 24, therefore error correction decoding ability can to concentrate in useful real data (only need carry out error correction decoding to the first real data (n '-i ')) by decoder module, improves efficient coding gain.
With reference to Figure 22, further, replacement module 23 can comprise:
Detecting unit 231, for detecting the filling position the data (n ') that export from demodulation module 22; And,
Permute unit 232, and the first padding data on the filling position for the data (n ') exported above-mentioned from demodulation module 22 (i ') replace with the second padding data (i).
In the present embodiment, the signal through transmission (n ') that receiver module 21 receiving end/sending end sends, by demodulation module 21, the signal received is carried out signal receiving, then the filling position (i.e. the position of the first padding data) in detecting unit 231 detection signal (data), the first padding data (i ') on filling position is replaced with the second padding data (i) by permute unit 232, again by decoder module 24 pairs of data (n '-i ', i) carry out error correction decoding and obtain real data (k-i), because namely the second padding data is (i) the padding data that transmitting terminal inserts in the second real data, therefore decoder module 24 in error-correction-decoding process just without the need to carrying out error correction to it, and the ability of error correction decoding can be concentrated in useful the first real data (n '-i '), thus improve efficient coding gain.
Further, corresponding with the scrambler module in transmitting terminal, receiving terminal can comprise descrambling module to carry out scramble process to the signal (data) received, and the following examples will be specifically described.
Needs illustrate, the descrambling module in following embodiment is optional module.
With reference to Figure 23, receiving terminal second embodiment of the present invention, provides a kind of receiving terminal, and corresponding with the transmitting terminal provided in aforesaid transmitting terminal second embodiment, this receiving terminal 2 comprises:
Receiver module 21, for the signal through transmission (n ') that receiving end/sending end sends;
Demodulation module 22, carries out signal receiving for the signal through transmission (n ') received by receiver module 21;
Replacement module 23, for replacing with the second padding data (i) by the first padding data (i ') on filling position in the data exported from demodulation module 22 (n ');
Decoder module 24, for the data exported from replacement module 23 (n '-i ', i) carry out error correction decoding process;
Descrambling module 25, the second real data (k-i) that the packet for exporting decoder module 24 contains carries out scramble process, thus obtains original the second real data (k-i).It should be noted that, because the scrambler module 15 of transmitting terminal 2 only carries out scrambler process to the second real data, therefore descrambling module 25 also only needs to carry out scramble process to the second real data accordingly.
With reference to Figure 24, further, replacement module 23 can comprise:
Detecting unit 231, for detecting the filling position the data (n ') that export from demodulation module 22;
Permute unit 232, and the first padding data on the filling position for the data (n ') exported above-mentioned from demodulation module 22 (i ') replace with the second padding data (i).
With reference to Figure 25, receiving terminal of the present invention 3rd embodiment, provides a kind of receiving terminal, and corresponding with the transmitting terminal provided in aforesaid transmitting terminal the 3rd embodiment, this receiving terminal 2 comprises:
Receiver module 21, for the signal through transmission (n ') that receiving end/sending end 2 sends;
Demodulation module 22, carries out signal receiving for the signal through transmission (n ') received by receiver module 21;
Replacement module 23, for replacing with the second padding data (i) by the first padding data (i ') on filling position in the data exported from demodulation module 22 (n ');
Decoder module 24, for the data exported from replacement module 23 (n '-i ', i) carry out error correction decoding process;
Descrambling module 25, carries out scramble process for the data (k-i, i) exported decoder module 24, thus obtains second real data (k-i) of needs.
With reference to Figure 26, further, replacement module 23 can comprise:
Detecting unit 231, for detecting the filling position the data (n ') that export from demodulation module 22;
Permute unit 232, and the first padding data on the filling position for the data (n ') exported above-mentioned from demodulation module 22 (i ') replace with the second padding data (i).
With reference to Figure 27, receiving terminal of the present invention 4th embodiment, provides a kind of receiving terminal, and corresponding with the transmitting terminal provided in aforesaid transmitting terminal the 4th embodiment, this receiving terminal 2 comprises:
Receiver module 21, for the signal through transmission (n ') that receiving end/sending end sends;
Demodulation module 22, carries out signal receiving for the signal through transmission (n ') received by receiver module 21;
Descrambling module 25, carries out scramble process for the data (n ') exported by demodulation module 22;
Replacement module 23, for replacing with the second padding data (i) by the first padding data (i ') on filling position in the data exported from descrambling module 25 (n ');
Decoder module 24, for replacement module 23 is exported data (n '-i ', i) carry out error correction decoding process, with obtain need the second real data (k-i).
With reference to Figure 28, further, replacement module 23 can comprise:
Detecting unit 231, for detecting the filling position the data (n ') that export from descrambling module 25;
Permute unit 232, on the filling position for the data (n ') exported above-mentioned from descrambling module 25 first fills word (i ') joint replaces with the second padding data (i).
Above receiving terminal the 3rd is in the 5th embodiment, receiving terminal 2 has included descrambling module 25, its difference is, corresponding with the scrambler module in transmitting terminal, the position of descrambling module 25 in the handling process of receiving terminal 2 pairs of signals (or data) is also different, and those of ordinary skill in the art can wherein one or more be implemented according to actual conditions selection.
Corresponding with the interleaving block that transmitting terminal comprises, receiving terminal also can comprise de-interleaving block, is below specifically described.
With reference to Figure 29, receiving terminal of the present invention 5th embodiment, provides a kind of receiving terminal, and corresponding with the transmitting terminal provided in aforesaid transmitting terminal the 5th embodiment, this receiving terminal 2 comprises:
Receiver module 21, for the signal through transmission (n ') that receiving end/sending end sends;
Demodulation module 22, carries out signal receiving for the signal through transmission (n ') received by receiver module 21;
De-interleaving block 26, carries out deinterleaving process for the data (n ') exported by demodulation module 22;
Replacement module 23, for replacing with the second padding data (i) by the first padding data (i ') on filling position in the data exported from de-interleaving block 26 (n ');
Decoder module 24, for replacement module 23 is exported data (n '-i ', i) carry out error correction decoding process, with obtain need the second real data (k-i).
With reference to Figure 30, further, replacement module 23 can comprise:
Detecting unit 231, for detecting the filling position the data (n ') that export from de-interleaving block 26;
Permute unit 232, on the filling position for the data (n ') exported above-mentioned from de-interleaving block 26 first fills word (i ') joint replaces with the second padding data (i).
It should be noted that, the de-interleaving block of receiving terminal is not limited to the order described in the present embodiment, also corresponding before can being positioned at packing module or coding module with the interleaving block of transmitting terminal, de-interleaving block processes signal (or data) after also can being positioned at replacement module or decoder module, and those of ordinary skill in the art can do suitable setting according to actual conditions.
Needs illustrate, the de-interleaving block in the present embodiment is optional module.
Be described below by the application of concrete example to signal processing system provided by the invention.
Application example one:
Second padding data is 0016 or 7E16, error correction coding/decoding mode adopts RS(256,252), modulating/demodulating mode adopts OFDM, the real data (the second real data) will transmitted in unit interval is 149 bytes, in unit interval, physical layer can bearing capacity (the fixed line speed of physical layer) be 252 bytes, the signal processing system of the transmitting terminal adopting transmitting terminal the 4th embodiment and receiving terminal the 4th embodiment to provide respectively and receiving terminal composition processes, and concrete handling process is as follows:
Step S1, the Rate Adapter Unit 111 fixed line speed (252) according to physical layer and the data volume (149) of the second real data, determine the length (103) needing padding data;
Step S2, plug-in unit 112 insert byte of padding 0016 or 7E16(i.e. second padding data of 103 byte numbers in the second real data);
Step S3, the second padding data and the second real data, together as information code element, carry out RS(256,252 by coding module 12) coding;
The data that step S4, scrambler module 15 pairs of coding modules 12 export carry out scrambler process;
The data that step S5, modulation module 13 pairs of scrambler modules 15 export carry out OFDM modulation;
The signal obtained after OFDM modulation is sent to receiving terminal 2 by step S6, sending module 14;
The signal that step S7, receiver module 21 receiving end/sending end 1 send, this signal receiving end after transmission receives;
The signal that step S8, demodulation module 22 pairs of receiver modules 21 receive carries out OFDM demodulation;
The data that step S9, descrambling module 25 pairs of demodulation modules 22 export carry out scramble process;
Filling position is detected in the data that step S10, detecting unit 231 export at descrambling module 25;
The first padding data that filling position may be made mistakes, according to the testing result of detecting unit 231, is replaced with completely reliable second padding data (0016 or 7E16 byte) by step S11, permute unit 232;
The second padding data after replacement and the first real data are together carried out RS(256,252 by step S12, decoder module 24) decoding processes, thus original the second real data (149 bytes) can be obtained.
Application example two:
Second padding data is the repetition byte of mark filling position, error correction coding/decoding mode adopts RS(256,252), modulating/demodulating mode adopts OFDMA, the real data (the second real data) will transmitted in unit interval is 149 bytes, in unit interval, physical layer can bearing capacity (the fixed line speed of physical layer) be 252 bytes, the signal processing system of the transmitting terminal adopting transmitting terminal second embodiment and receiving terminal second embodiment to provide respectively and receiving terminal composition processes, and concrete handling process is as follows:
Step S1, the Rate Adapter Unit 111 fixed line speed (252) according to physical layer and the data volume (149) of the second real data, determine the length (103) needing padding data;
Step S2, scrambler module 15 carry out scrambler process to the second real data;
The repetition byte (i.e. the second padding data) of the mark filling position of 103 byte numbers is inserted in step S3, plug-in unit 112 the second real data after scrambler process;
Step S4, the second padding data and the second real data, together as information code element, carry out RS(256,252 by coding module 12) coding;
The data that coding module 12 exports by step S5, modulation module 13 carry out OFDMA modulation;
The signal that step S6, sending module 14 obtain after being modulated by OFDMA is sent to receiving terminal 2;
The signal that step S7, receiver module 21 receiving end/sending end 1 send, this signal receiving end after transmission receives;
The signal that step S8, demodulation module 22 pairs of receiver modules 21 receive carries out OFDMA demodulation;
Judge in the data that step S9, detecting unit 231 export at demodulation module 22 that the repetition byte of mark filling position detects filling position;
The first padding data that filling position may be made mistakes, according to the testing result of detecting unit 231, is replaced with completely reliable second padding data by step S10, permute unit 232;
The second padding data after replacement and the first real data are together carried out RS(256,252 by step S11, decoder module 24) decoding processes, thus second real data (149 bytes) of non-descrambling can be obtained.
Second real data (149 bytes) of the non-descrambling that step S12, descrambling module 25 pairs of decoder modules 24 export carries out scramble process, obtains original the second real data (149 bytes).
With reference to Figure 31, the embodiment of the present invention also provides a kind of signal processing system, comprises transmitting terminal 1 and receiving terminal 2, wherein,
Transmitting terminal 1 for inserting above-mentioned second padding data in the second real data to be sent;
Transmitting terminal 1 is also for carrying out error correction coding process to the data obtained after above-mentioned second padding data of above-mentioned insertion;
Transmitting terminal 1 is also for carrying out signal madulation to the data obtained after above-mentioned error correction coding process;
Transmitting terminal 1 is also for being sent to receiving terminal 2 by the signal obtained after above-mentioned signal madulation;
The signal through transmission that receiving terminal 2 sends for receiving end/sending end 1, the above-mentioned signal through transmission comprises the first real data and the first padding data; Wherein, above-mentioned first real data generates after the second real data sent by above-mentioned transmitting terminal changes in transmission process, and above-mentioned first padding data generates after being changed in transmission process by above-mentioned transmitting terminal the second padding data be inserted in above-mentioned second real data;
Receiving terminal 2 also for the above-mentioned signal through transmission is carried out signal receiving, to obtain the first data;
Receiving terminal 2 is also for replacing with above-mentioned second padding data, to obtain the second data by above-mentioned first padding data on the filling position in above-mentioned first data;
Receiving terminal 2 is also for carrying out error correction decoding process to above-mentioned second data.
Wherein transmitting terminal 1 and receiving terminal 2 can carry out signal transacting according to the mode in all embodiments above, and detailed process does not just repeat at this.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is that the hardware that can carry out instruction relevant by program has come, this program can be stored in a computer-readable recording medium, storage medium can comprise: flash disk, read-only memory (Read-Only Memory, ROM), random access device (Random Access Memory, RAM), disk or CD etc.
The signal processing method, system and the transmitting terminal that there is provided the embodiment of the present invention above and receiving terminal are described in detail, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, to sum up above-mentioned, this description should not be construed as limitation of the present invention.

Claims (14)

1. a signal processing method, is characterized in that, comprising:
The signal through transmission that receiving terminal receiving end/sending end sends, the described signal through transmission comprises the first real data and the first padding data; Wherein, described first real data is that the second real data sent by described transmitting terminal changes and obtains in transmission process, and described first padding data is changed in transmission process by described transmitting terminal the second padding data inserted in described second real data to obtain;
The described signal through transmission is carried out signal receiving by described receiving terminal, to obtain the first data;
Described first padding data on filling position in described first data is replaced with described second padding data, to obtain the second data by described receiving terminal;
Described receiving terminal carries out error correction decoding process to described second data, to obtain described second real data.
2. method according to claim 1, is characterized in that, described method also comprises:
Be inserted with the second padding data in described second real data, and described second real data is sent to receiving terminal after continuing error correction coding process and signal madulation by transmitting terminal.
3. method according to claim 1, is characterized in that, described method also comprises:
Described second real data is the second real data after scrambler process, be inserted with the second padding data in described the second real data after scrambler process, and described the second real data after scrambler process is sent to receiving terminal after continuing error correction coding process and signal madulation by transmitting terminal;
After described receiving terminal carries out error correction decoding process to described second data, described method also comprises:
Described receiving terminal carries out scramble process to the second real data that the data obtained after described error correction decoding process comprise.
4. method according to claim 1, is characterized in that, described method also comprises:
Be inserted with the second padding data in described second real data, and described second real data is sent to receiving terminal after continuing error correction coding process, interleaving treatment and signal madulation by transmitting terminal;
At described receiving terminal, described first padding data on the filling position in described first data is replaced with described second padding data, before obtaining the second data, also comprises:
Described receiving terminal carries out deinterleaving process to described first data;
Described first padding data on filling position in described first data is replaced with described second padding data by described receiving terminal, to obtain the second data be: described receiving terminal replaces with described second padding data, to obtain the second data to described first padding data on filling position in the data obtained after described deinterleaving process.
5. the method according to claim 2 ~ 4 any one, is characterized in that, described transmitting terminal inserts described second padding data and specifically comprises in the second real data to be sent:
The length of described second padding data determined by the speed of described second real data and the fixed line speed of physical layer, and the speed of information code element of described second padding data and described second real data composition and the fixed line speed of described physical layer match.
6. the method according to Claims 1 to 4 any one, is characterized in that, described first padding data on the filling position in described first data is replaced with described second padding data by described receiving terminal, specifically comprises to obtain the second data:
Described receiving terminal detects the described filling position in described first data;
Described first padding data on filling position described in first data is replaced with described second padding data, to obtain the second data by described receiving terminal.
7. the method according to Claims 1 to 4 any one, is characterized in that, described second padding data comprises idle data.
8. a signal processing system, comprises transmitting terminal and receiving terminal, it is characterized in that,
Described transmitting terminal is used for inserting the second padding data in the second real data to be sent;
Described transmitting terminal is also for carrying out error correction coding process to the data obtained after described second padding data of described insertion;
Described transmitting terminal is also for carrying out signal madulation to the data obtained after described error correction coding process;
Described transmitting terminal is also for being sent to described receiving terminal by the signal obtained after described signal madulation;
Described receiving terminal is used for the signal through transmission that receiving end/sending end sends;
Described receiving terminal also for the described signal through transmission is carried out signal receiving, to obtain the first data;
Described receiving terminal also for the first padding data on the filling position in described first data is replaced with described second padding data, to obtain the second data;
Described receiving terminal also for carrying out error correction decoding process to described second data, to obtain described second real data.
9. system according to claim 8, is characterized in that,
Described transmitting terminal is also for carrying out scrambler process to described second real data;
Described transmitting terminal also for inserting described second padding data in the second real data after described scrambler process;
Second real data of described receiving terminal also for comprising the data obtained after described error correction decoding process carries out scramble process.
10. system according to claim 8, is characterized in that,
Described transmitting terminal is also for carrying out interleaving treatment to the data obtained after described error correction coding process;
The data of described transmitting terminal also for obtaining after described interleaving treatment carry out signal madulation;
Described receiving terminal is also for carrying out deinterleaving process to described first data;
Described receiving terminal is also for replacing with described second padding data, to obtain the second data to described first padding data on filling position in the data obtained after described deinterleaving process.
11. 1 kinds of receiving terminals, is characterized in that, described receiving terminal comprises:
Receiver module, for the signal through transmission that receiving end/sending end sends, the described signal through transmission comprises the first real data and the first padding data; Wherein, described first real data is that the second real data sent by described transmitting terminal changes and obtains in transmission process, and described first padding data is changed in transmission process by described transmitting terminal the second padding data inserted in described second real data to obtain;
Demodulation module, for carrying out signal receiving by the described signal through transmission;
Replacement module, described first padding data on the filling position in the data exported by described demodulation module replaces with described second padding data;
Decoder module, carries out error correction decoding process for the data exported described replacement module, to obtain described second real data.
12. receiving terminals according to claim 11, is characterized in that, described receiving terminal also comprises:
Descrambling module, carries out scramble process for the second real data through scrambler process comprised the data exported from described decoder module.
13. receiving terminals according to claim 11, is characterized in that, described receiving terminal also comprises:
De-interleaving block, for carrying out deinterleaving process to the data through interleaving treatment exported from described demodulation module;
Described first padding data of described replacement module in the data exported from described de-interleaving block on filling position replaces with described second padding data.
14. receiving terminals according to claim 11-13 any one, it is characterized in that, described replacement module comprises:
Detecting unit, for detecting the described filling position the data that export from described demodulation module;
Permute unit, for replacing with described second padding data by described described first padding data from the data that described demodulation module exports on filling position.
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