KR101721702B1 - Apparatus and method for transmission additional data using padding and removes of additional data - Google Patents

Abstract

In the present invention, in order to transmit additional data, which is additional information, in addition to main data, which is an original signal, in a transmitting apparatus of a wired / wireless communication and broadcasting communication system, additional data is padded so as not to affect main data, The present invention relates to an apparatus and method for transmitting / receiving additional data at a high speed at which the additional data does not affect the restoration of the main data of the receiving apparatus.

Description

[0001] APPARATUS AND METHOD FOR TRANSMISSION ADDITIONAL DATA USING PADDING AND REMOVES OF ADDITIONAL DATA [0002]

The present invention relates to an apparatus and method for transmitting / receiving additional data at high speed, and more particularly, to an apparatus and method for transmitting / receiving additional data at high speed by padding and transmitting additional data and removing padded additional data.

Currently broadcasting and communication technologies are evolving into various media. In this background, ATSC-based DTV using a single carrier and DVB-based DTV using a multicarrier have emerged. With the development of terminal technology, ATSC and DVB standards for mobile broadcasting have been redefined. Mobile wireless Internet service (WiBro) capable of high-speed communication using a multicarrier is being implemented.

Broadcasting and communication are evolving in various forms as fusion of each other. However, frequency resources are extremely scarce. In order to solve the frequency shortage problem and to use the efficient frequency, ultra wideband (UWB) and cognitive radio which is an overlay method are being actively studied. Therefore, a technique for maximizing transmission capacity under a given band is required.

Conventionally, a technique of watermarking a broadcast transmission signal has been used for the purpose of identifying a broadcast transmitter and improving an additional data transmission rate.

In a conventional additional data transmission technique, the transmitting apparatus amplitude modulates or phase-modulates the additional data as a primary modulation, and then performs secondary spread modulation using the long code for watermarking. The receiver then prepares a reference signal for the long code and restores the additional data after correlation processing. Conventional additional data transmission technology is mainly limited to the 8VSB based ATSC method, and transmission capacity of additional data information is less than several kbps, so that transmission of text information is not easy.

An embodiment of the present invention provides an apparatus and method for transmitting / receiving additional data at high speed using padding and cancellation of additional data.

The embodiment of the present invention may be configured to transmit the modulated signal of the additional data or the additional data generated in the transmitting apparatus to a frame of a conventional broadcast and communication system (e.g., VSB (Vestigial Side Band) based broadcasting system, Orthogonal Frequency Division Multiplexing ) Or a frame of a communication system based on SS (Spread Spectrum) and CDMA (Code Division Multiple Access)), and transmits the padded data (hereinafter referred to as main data , It is possible to additionally transmit and receive additional data without substantially affecting the data restoration performance of the padded system, thereby sharing the necessary frequency for transmission Thereby providing a new apparatus and method.

The present invention provides an apparatus and method for padding and transmitting additional data modulated by a modulation method different from main data in a transmitting apparatus and transmitting and receiving additional data at high speed by removing additional data from the receiving apparatus.

A transmitting apparatus for transmitting additional data at high speed according to an embodiment of the present invention includes a first modulator for modulating additional data, a second modulator for modulating main data in a modulation scheme different from that of the first modulator, And a padding unit for padding the modulated main data with the modulated additional data.

A receiving apparatus for receiving additional data at high speed according to an embodiment of the present invention includes a padding detection unit for extracting modulated additional data of a predetermined modulation scheme by using a characteristic of a modulation scheme in padded data, And a padding removing unit for removing the modulated additional data and extracting the modulated main data.

A transmitting apparatus for transmitting additional data at high speed according to an embodiment of the present invention includes a mapping unit for selecting a spreading code corresponding to additional data in a spreading code set and a transmitter for adjusting the amplitude of the selected spreading code to a predetermined size A scaling unit and a padding unit for padding the spreading code whose amplitude magnitude is adjusted to the modulated main data.

A receiving apparatus for receiving additional data at high speed according to an embodiment of the present invention includes a matched filter unit for calculating a correlation characteristic peak value by reversely converting padded data into a matched filter and a spreading code unit for determining a spreading code corresponding to the correlation characteristic peak value And a padding removal unit for removing the verified spreading code from the padded data and extracting main data.

A transmission method for transmitting additional data at high speed according to an embodiment of the present invention includes the steps of modulating main data, modulating additional data by a modulation scheme different from the modulation scheme of modulating the main data, Adjusting the amplitude magnitude of the additional data to a predetermined magnitude, and padding the modulated additional data whose amplitude magnitude is adjusted to the modulated main data.

According to another aspect of the present invention, there is provided a receiving method for receiving additional data at a high speed, comprising the steps of: extracting additional data modulated by a predetermined modulation scheme using characteristics of a modulation scheme in padded data; Adjusting the amplitude magnitude of the modulated supplementary data to a predetermined amplitude magnitude corresponding to the reception intensity; extracting the modulated main data by removing the modulated supplementary data whose amplitude magnitude is adjusted in the padded data; And outputting the additional data by demodulating the modulated additional data.

The transmission method for transmitting additional data at high speed according to the embodiment of the present invention includes the steps of: selecting a spreading code corresponding to additional data in a spreading code set; adjusting an amplitude size of the selected spreading code to a predetermined size And padding the spreading code whose amplitude magnitude is adjusted to the modulated main data.

A receiving method for receiving additional data at high speed according to an embodiment of the present invention includes receiving padded data, calculating correlation characteristic peaks by inversely converting the padded data into a matched filter, Determining a spreading code corresponding to the peak value; adjusting an amplitude magnitude of the identified spreading code to a predetermined amplitude magnitude corresponding to a magnitude of a correlation characteristic peak; Extracting main data by removing an identified spreading code, and outputting predetermined data corresponding to the identified spreading code as additional data.

The present invention relates to a method and apparatus for padding a modulated signal of additional data or additional data generated by a transmitting apparatus in a frame of an existing broadcasting and communication system and transmitting the modulated signal to a receiving apparatus before demodulating main data which is data of a padded system The present invention relates to a new apparatus and method for sharing a frequency required for transmission by additionally transmitting / receiving additional data without substantially affecting the data restoration performance of the padded system by previously removing the padded additional data part. It is possible to increase the additional data transmission capability without using a new additional resource (frequency, time, code, etc.).

1 is a diagram showing the configuration of a transmitting apparatus for transmitting additional data by padding according to an embodiment of the present invention;
2 is a block diagram of a receiving apparatus for receiving padded data according to an embodiment of the present invention;
3 is a diagram showing a configuration of a transmitting apparatus for transmitting additional data by padding according to another embodiment of the present invention;
4 is a diagram illustrating a configuration of a receiving apparatus for receiving padded data according to another embodiment of the present invention;
5 is a flowchart illustrating a process of padding and transmitting additional data according to an embodiment of the present invention.
6 is a flowchart illustrating a process of receiving padded data according to an embodiment of the present invention.
7 is a flowchart illustrating a process of padding and transmitting additional data according to another embodiment of the present invention,
8 is a flowchart illustrating a process of receiving padded data according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to an apparatus and method for transmitting and receiving additional data at a high speed by padding additional data in a transmission apparatus and transmitting the additional data and removing additional data from the reception apparatus.

First, a transmitting apparatus for padding additional data using a spreading code and a receiving apparatus for removing padded additional data will be described below with reference to FIGS. 1 and 2. FIG.

1 is a diagram showing a configuration of a transmitting apparatus for padding additional data according to an embodiment of the present invention.

1, a transmitting apparatus for transmitting additional data at a high speed includes a coding unit 110, a modulating unit 112, a mapping unit 114, a scaling unit 116, a padding unit 118, a digital / (DAC) 120 and an RF processor 112.

The encoding unit 110 encodes the input main data at a corresponding encoding rate and outputs encoded main data (coded bits or symbols). At this time, the main data may be broadcast data.

The modulation unit 112 modulates the encoded main data received from the code unit 110 and outputs the modulated main data. The modulation unit 112 performs OFDM modulation if the transmission apparatus is a T-DMB broadcasting apparatus.

The modulator 112 modulates one of modulation schemes based on VSB (Vestigial Side Band), OFDM (Orthogonal Frequency Division Multiplexing), SS (Spread Spectrum) or CDMA (Code Division Multiple Access) Modulation method.

The mapping unit 114 receives additional data of a predetermined size and selects a spreading code corresponding to the additional data in a predetermined spreading code set. Zero Correlation Duration (ZCD) codes and LCD (Low Correlation Duration) codes are available as spreading codes. The additional data may include identification information of the transmission apparatus, disaster information, traffic information, and geographical information.

The mapping unit 114 may use a different spreading code set according to the channel state in consideration of the channel state. In this case, the mapping unit 114 may first select the spreading code set corresponding to the channel state in the variable spreading code set set composed of the plurality of spreading code sets before selecting the spreading code.

The scaling unit 116 adjusts the amplitude magnitude of the selected spreading code to a predetermined magnitude to increase the transmission sensitivity in the receiving apparatus. In this case, the predetermined size is set so that the amplitude magnitude of the padded data generated by padding the spreading code whose amplitude magnitude is adjusted to the modulated main data is lower than the reference power allowed by the transmitting apparatus and the receiving apparatus. The present invention does not affect the original signal because it removes the padded signal in the receiving apparatus before the original signal demodulation. Thus, the magnitude of the amplitude of the padded signal can be increased as much as the power of the transmitting apparatus and the receiving apparatus is allowed.

The padding unit 118 outputs padded data by padding the spreading code whose amplitude magnitude is adjusted to the modulated main data.

The digital-to-analog converter (DAC) 120 converts the padded data into an analog signal and outputs it. The RF processor 112 includes a filter and a front end unit. The RF processor 112 RF-processes the signal output from the DAC 120 and transmits the signal through a Tx antenna And transmits it over a wireless channel.

2 is a diagram illustrating a configuration of a receiving apparatus for receiving padded data according to an embodiment of the present invention.

2, a receiving apparatus for receiving additional data at a high speed includes an RF processor 210, an analog / digital converter (ADC) 212, a distributor 214, a matched filter 216, a padding detector 218, A demapping unit 220, a scaling unit 222, a padding removal unit 224, a demodulation unit 226, and a decoding unit 228.

The RF processor 210 includes a front end unit and a filter. The RF processor 210 converts the padded data of the high frequency band passed through the wireless channel into padded data of the baseband and outputs the padded data.

The analog-to-digital converter (ADC) 212 converts padded data of the baseband of the analog behavior from the RF processor 210 into digital padded data and outputs it.

The distribution unit 214 outputs the padded data from the ADC 212 to the matched filter unit 216 and the padding removal unit 224.

The matched filter unit 216 despreads the padded data from the distribution unit 214 with a matched filter to calculate a correlation characteristic peak value.

The padding detection unit 218 identifies a spreading code corresponding to the correlation characteristic peak value.

Meanwhile, when a variable spreading code set is used in the transmitting apparatus, the matched filter unit 216 includes a predetermined number of matched filters according to the channel state, and inversely converts the padded data for each of the matched filters to calculate correlation characteristic peaks do. The padding detection unit 218 identifies the spreading code corresponding to the largest correlation characteristic peak among the correlation characteristic peaks calculated by the matched filter unit 216. [

The demapping unit 220 outputs predetermined data corresponding to the identified spreading code as additional data.

The scaling unit 222 adjusts the amplitude magnitude of the spreading code identified with a predetermined amplitude magnitude corresponding to the magnitude of the correlation characteristic peak.

The padding removal unit 224 extracts the modulated main data by removing the identified spreading code whose amplitude magnitude is adjusted from the scaling unit 222 in the padded data.

The demodulator 226 demodulates the modulated main data from the padding removal unit 224 and outputs the encoded main data.

The decoding unit 228 decodes the encoded main data from the demodulation unit 226 and outputs main data.

The receiving apparatus of FIG. 2 extracts the spreading code corresponding to the additional data and removes it from the padding data. Alternatively, the receiving apparatus may extract the modulated main data from the padding data and extract the additional data by removing the modulated main data from the padded data.

Next, a transmitting apparatus for padding the additional data modulated by the modulation scheme different from the main data and a receiving apparatus for removing the padded additional data will be described with reference to FIGS. 3 and 4 below.

3 is a diagram showing a configuration of a transmitting apparatus for transmitting additional data by padding according to another embodiment of the present invention.

3, a transmitting apparatus for transmitting additional data at a high speed includes a second coding unit 310, a second modulating unit 312, a first coding unit 313, a first modulating unit 314, a scaling unit 316, a padding unit 318, a digital / analog converter (DAC) 320, and an RF processor 312.

The second coding unit 310 codes the input main data at a corresponding coding rate and outputs encoded main data (coded bits or symbols). At this time, the main data may be broadcast data.

The second modulating unit 312 modulates the encoded main data received from the second coding unit 310 and outputs the modulated main data. At this time, the second modulator 312 modulates a modulation scheme based on VSB (Vestigial Side Band), OFDM (Orthogonal Frequency Division Multiplexing), SS (Spread Spectrum) or CDMA (Code Division Multiple Access) It is possible.

The first coding unit 313 codes the additional data to be input at a corresponding coding rate and outputs the encoded additional data.

The first modulating unit 314 modulates the encoded additional data received from the first coding unit 313 and outputs the modulated additional data.

At this time, the first modulator 314 and the second modulator modulate using different modulation schemes.

Then, the first modulator 314 can modulate the additional data using at least one of spreading modulation, phase modulation, amplitude modulation, or frequency modulation by a spreading code.

Alternatively, the first modulator 314 may use a modulation scheme based on VSB (Vestigial Side Band), OFDM (Orthogonal Frequency Division Multiplexing), SS (Spread Spectrum) or CDMA (Code Division Multiple Access) The additional data may be modulated.

The scaling unit 316 adjusts the amplitude magnitude of the modulated additional data to a predetermined magnitude to increase the transmission sensitivity in the receiving apparatus. In this case, the predetermined size is set so that the amplitude magnitude of the padded data generated by padding the additional data modulated to the modulated main data is lower than the reference power allowed by the transmitting apparatus and the receiving apparatus. The present invention does not affect the original signal because it removes the padded signal in the receiving apparatus before the original signal demodulation. Thus, the magnitude of the amplitude of the padded signal can be increased as much as the power of the transmitting apparatus and the receiving apparatus is allowed.

The padding unit 318 outputs padded data by padding the modulated additional data whose amplitude magnitude is adjusted to the modulated main data.

A digital / analog converter (DAC) 320 converts the padded data into an analog signal and outputs it. The RF processor 312 includes a filter and a front end unit. The RF processor 312 RF-processes the signal output from the DAC 320 and transmits the RF signal through a Tx antenna And transmits it over a wireless channel.

4 is a diagram illustrating a configuration of a receiving apparatus for receiving padded data according to another embodiment of the present invention.

4, a receiving apparatus for receiving additional data at a high speed includes an RF processor 410, an analog / digital converter (ADC) 412, a distributor 414, a padding detector 416, a second demodulator A second decoding unit 420, a scaling unit 422, a padding removal unit 424, a second demodulation unit 426, and a second decoding unit 428.

The RF processor 410 includes components such as a front end unit and a filter and converts the padded data of the high frequency band that has passed through the wireless channel into padded data of the baseband and outputs the padded data.

The analog-to-digital converter (ADC) 412 converts padded data of the baseband of the analog behavior from the RF processor 410 into digital padded data and outputs it.

The distribution unit 414 outputs the padded data from the ADC 412 to the padding detection unit 416 and the padding removal unit 424. [

The padding detection unit 416 extracts the modulated additional data of the predetermined modulation scheme using the characteristics of the modulation scheme from the padded data from the distribution unit 414, and outputs the modulated additional data.

The first demodulating unit 418 demodulates the modulated additional data from the padding detecting unit 416 and outputs the encoded additional data.

The first decoding unit 420 decodes the encoded additional data from the first demodulation unit 418 and outputs the additional data.

The scaling unit 422 adjusts the amplitude magnitude of the additional data modulated with a predetermined amplitude magnitude corresponding to the reception intensity of the padded data.

The padding removal unit 424 extracts the modulated main data by removing the modulated additional data whose amplitude magnitude is adjusted from the scaling unit 422 in the padded data from the distribution unit 414. [

The second demodulation section 426 demodulates the modulated main data from the padding removal section 424 and outputs the encoded main data.

The second decoding unit 428 decodes the encoded main data from the second demodulating unit 426 and outputs main data.

The receiving apparatus of FIG. 4 first extracts the modulated supplementary data using the modulation scheme corresponding to the supplementary data and removes it from the padding data. Alternatively, the receiving apparatus may first extract the modulated main data from the padding data and extract the additional data by removing the modulated main data from the padded data.

Hereinafter, a method for transmitting / receiving additional data at high speed using the padding and cancellation of additional data according to the present invention will be described below with reference to the drawings.

5 is a flowchart illustrating a process of padding and transmitting additional data according to an embodiment of the present invention.

Referring to FIG. 5, a transmitter according to an embodiment of the present invention receives additional data to be transmitted in step 510, and selects a spreading code corresponding to additional data in a spreading code set.

In step 514, the transmitting apparatus adjusts the amplitude magnitude of the selected spreading code to a predetermined size to increase the transmission sensitivity.

Then, the transmitting apparatus pads the spreading code whose amplitude magnitude is adjusted in the main data modulated in step 516, and transmits the padding data to the receiving apparatus in step 518.

6 is a flowchart illustrating a process of receiving padded data according to an embodiment of the present invention.

Referring to FIG. 6, upon receiving padding data in step 610, the receiving apparatus according to an embodiment of the present invention converts padding data into digital data in step 612. In step 614, the receiving apparatus calculates correlation characteristic peaks by inversely converting the padded data into a matched filter.

In step 616, the receiving apparatus confirms the spreading code corresponding to the correlation characteristic peak value. The receiving apparatus outputs predetermined data corresponding to the spreading code identified in step 618 as additional data.

In step 620, the receiving apparatus adjusts the amplitude magnitude of the spreading code identified by the predetermined amplitude magnitude corresponding to the magnitude of the correlation characteristic peak. In step 622, the receiving apparatus extracts the modulated main data by removing the identified spreading code whose amplitude magnitude is adjusted in the padded data. Then, the receiving apparatus demodulates and decodes the main data modulated in step 624, and outputs main data.

7 is a flowchart illustrating a process of padding and transmitting additional data according to another embodiment of the present invention.

Referring to FIG. 7, in step 710, a transmitting apparatus according to an embodiment of the present invention encodes supplementary data and modulates the supplementary data in a predetermined modulation scheme in step 712. FIG. At this time, the predetermined modulation method of modulating the additional data is a modulation method different from the modulation method of modulating the main data.

In step 714, the transmitter adjusts the magnitude of the amplitude of the modulated additional data to a predetermined magnitude to increase the transmission sensitivity.

Then, the transmitting apparatus paddes the modulated additional data to the main data modulated in step 716. [ In step 718, the transmitting apparatus transmits padded data to the receiving apparatus.

8 is a flowchart illustrating a process of receiving padded data according to another embodiment of the present invention.

Referring to FIG. 8, when receiving data padded in step 810, the receiving apparatus according to an embodiment of the present invention converts padded data into digital data in step 812.

In step 814, the receiving apparatus extracts the additional data modulated by the predetermined modulation scheme using the characteristic of the predetermined modulation scheme in the padded data.

The receiving apparatus demodulates and decodes the additional data modulated in step 816, and outputs the additional data.

In step 818, the receiving apparatus adjusts amplitude magnitudes of the additional data modulated with predetermined amplitude magnitudes corresponding to the reception intensity of padded data. In step 820, the receiving apparatus extracts the modulated main data by removing the modulated additional data whose amplitude magnitude is adjusted in the padded data. Then, the receiving apparatus demodulates and decodes the main data modulated in step 822, and outputs the main data.

The methods according to embodiments of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the medium may be those specially designed and configured for the present invention or may be available to those skilled in the art of computer software.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

210; RF processor
212; ADC
214; Distributor
216; The matched filter portion
218; The padding detection unit
220; The demapping unit
222; The scaling unit
224; Padding removal
226; Demodulator
228; The decoding unit

Claims (26)

A first modulator for modulating the additional data;
A second modulator for modulating the main data by a modulation scheme different from that of the first modulator;
A scaling unit for adjusting amplitude magnitudes of the modulated additional data within a reference power allowed by the transmitting apparatus and the receiving apparatus so as to be greater than a predetermined magnitude in order to increase the transmission sensitivity of the receiving apparatus with respect to the modulated additional data; And
And a padding unit for padding the modulated additional data whose amplitude magnitude is adjusted to the modulated main data
A transmitting apparatus for transmitting additional data at high speed.
delete delete The method according to claim 1,
Wherein the first modulator comprises:
Modulates the additional data using at least one of spreading modulation, phase modulation, amplitude modulation, or frequency modulation by a spreading code
A transmitting apparatus for transmitting additional data at high speed.
The method according to claim 1,
Wherein the first modulator comprises:
Wherein the additional data is modulated using one of a modulation scheme based on VSB (Vestigial Side Band), OFDM (Orthogonal Frequency Division Multiplexing), SS (Spread Spectrum) or CDMA (Code Division Multiple Access)
A transmitting apparatus for transmitting additional data at high speed.
The method according to claim 1,
Wherein the second modulator comprises:
Wherein the main data is modulated by using a modulation scheme based on a VSB (Vestigial Side Band), an OFDM (Orthogonal Frequency Division Multiplexing), SS (Spread Spectrum) or a CDMA (Code Division Multiple Access)
A transmitting apparatus for transmitting additional data at high speed.
A padding detection unit for extracting modulated additional data of a predetermined modulation scheme using characteristics of a modulation scheme in padded data;
A scaling unit for adjusting an amplitude magnitude of the modulated additional data; And
And a padding removal unit for removing the modulated additional data whose amplitude magnitude is adjusted in the padded data and extracting the modulated main data
A receiving apparatus for receiving additional data at high speed.
8. The method of claim 7,
Wherein the modulated main data includes:
And modulated by a different modulation scheme from the modulated additional data
A receiving apparatus for receiving additional data at high speed.
delete 8. The method of claim 7,
Wherein the scaling unit comprises:
And adjusting an amplitude magnitude of the modulated additional data to a predetermined amplitude magnitude corresponding to a reception intensity of the padded data
A receiving apparatus for receiving additional data at high speed.
8. The method of claim 7,
And a demodulating unit for demodulating the modulated additional data and outputting the additional data
A receiving apparatus for receiving additional data at high speed.
A mapping unit for selecting a spreading code corresponding to the additional data in the spreading code set;
A scaling unit for adjusting amplitude magnitudes of the selected spreading codes to a predetermined magnitude or more within a reference power allowed by the transmitting apparatus and the receiving apparatus to increase the transmitting sensitivity of the receiving apparatus with respect to the additional data; And
And a padding unit for padding the spreading code whose amplitude magnitude is adjusted to the modulated main data
A transmitting apparatus for transmitting additional data at high speed.
delete 13. The method of claim 12,
Wherein the mapping unit comprises:
Characterized in that the spreading code set corresponding to the channel state is selected in a set of variable spreading codes composed of a plurality of spreading code sets
A transmitting apparatus for transmitting additional data at high speed.
A matched filter unit for calculating a correlation characteristic peak value by reversely converting the padded data into a matched filter;
A padding detection unit for identifying a spreading code corresponding to the correlation characteristic peak value;
A scaling unit for adjusting amplitude magnitudes of the identified spreading codes; And
And a padding removal unit for removing the identified spreading code whose amplitude magnitude is adjusted in the padded data to extract main data
A receiving apparatus for receiving additional data at high speed.
delete 16. The method of claim 15,
Wherein the scaling unit comprises:
And adjusting the amplitude magnitude of the identified spreading code to a predetermined amplitude magnitude corresponding to the magnitude of the correlation characteristic peak
A receiving apparatus for receiving additional data at high speed.
16. The method of claim 15,
And a demapping unit for outputting predetermined data corresponding to the identified spreading code as additional data
A receiving apparatus for receiving additional data at high speed.
16. The method of claim 15,
Wherein the matched filter unit includes a predetermined number of matched filters according to a channel state and calculates correlation characteristic peaks by inversely converting the padded data for each of the matched filters,
Wherein the padding detection unit identifies a spreading code corresponding to a largest correlation characteristic peak value among the correlation characteristic peaks
A receiving apparatus for receiving additional data at high speed.
delete delete delete delete delete delete delete

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