JPH1127236A - Radio modem system for high speed transmission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To more improve demodulation precision to C/N, the larger information quantity per symbol becomes and to make frequency use efficient and large capacity by lowering a symbol rate in plural M pieces of Walsh series. SOLUTION: A transmitter 1A selects r1 series among M Walsh series which are prepared by a Walsh series generating part 3 with a selector 4 and also selects r pieces of initial phases of M series which are outputted by a sending system M series generating part 5 in accordance with the state of a conversion output. An adder adds it to r1 Walsh series. In a receiver 21A, a phase detecting part 15 extracts r pieces of initial phases of M series which are selected in the transmitter 1A in response to a subtraction output, also, a diffusing part 16 performs M types of inverse diffusion, and a Walsh series extraction deciding part 17 extracts r1 pieces of Walsh series from the output. A data deciding part 18 decides a sent transmission data series, based on the result and an extraction result of the part 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-speed transmission wireless modulation / demodulation system for transmitting more information wirelessly in a narrower frequency band.

[0002]

2. Description of the Related Art As a conventional modulation / demodulation system for high-speed transmission for transmitting more information wirelessly in a narrower frequency band, there is a system using QPSK (Quadrature Phase Shift Keying).

FIG. 12 is a block diagram showing a conventional high-speed transmission wireless modulation / demodulation system. In FIG. 12, 1M is a transmitting device, 8 is a transmitting unit, 9 is an antenna, 10 is a receiving unit,
21M is a receiving device, 38 is a 2-bit serial / parallel conversion unit, 39 is a multiplier for transmission, 40 is a π / 2 phase shifter for transmission,
41 is a synthesizer, 42 is a local oscillator, 43 is a multiplier for reception, 44 is a distributor, 45 is a π / 2 phase shifter for reception, 46 is a carrier recovery unit, and 47 is a 2-bit parallel-serial conversion unit.

The operation of the high-speed transmission wireless modulation / demodulation system configured as described above will be described below.

In the transmitting apparatus 1M, the transmission data td is converted into parallel data by a 2-bit serial / parallel converter 38 in order to reduce the modulation speed to one half of the transmission data rate. Oscillator 42
Π / 2 phase shifter 4 for transmitting intermediate frequency carrier output from
After multiplying the phase-shifted one by 0 and the one not phase-shifted by the multiplier 40, they are combined by the combiner 41, placed on the high-frequency carrier by the transmitting unit 8, and transmitted from the antenna 9 to the air.

[0006] In the receiving device 21M, the incoming signal is received by the antenna 9, and the receiving unit 10 receives the incoming signal.
Converts the received high-frequency signal into an intermediate frequency signal.
Then, the converted output is multiplied by a multiplier 43 by a phase shifter of the reference carrier output from the carrier reproducer 46 by the π / 2 phase shifter 45 for reception and by a multiplier 43 without phase shift. The bit-parallel-to-serial converter 47 converts the data into serial data and outputs it as demodulated data rd.

In this case, since the modulation speed is reduced to one half of the transmission data rate, a normal BPSK
(Binary Phase Shift Keying) enables twice as fast transmission.

[0008]

However, in the above-mentioned conventional radio modulation / demodulation system for high-speed transmission, the demodulation accuracy has a probability that the inter-signal distance becomes 1/2 ^1/2 as compared with the case of BPSK. There are 2/3, and only that much,
The demodulation accuracy for C / N is worse than that for BPSK, and the demodulation accuracy for C / N is further deteriorated for 8-valued FSK or 16-valued FSK with an increased amount of information per symbol. However, there is a problem that the efficiency and the capacity of the frequency use are limited.

In this wireless modulation and demodulation system for high speed transmission,
As the amount of information per symbol becomes larger, C / N
There is a demand that the demodulation accuracy for the data be improved.

The present invention provides a radio modulation / demodulation system for high-speed transmission, in which the larger the amount of information per symbol is, the more the demodulation accuracy for C / N is improved, and the efficiency of frequency use and the capacity can be increased. The purpose is to do.

[0011]

SUMMARY OF THE INVENTION In order to solve this problem, a high-speed transmission wireless modulation / demodulation system according to the present invention is a high-speed transmission wireless modulation / demodulation system comprising a transmission device and a reception device. A serial-parallel conversion unit that converts data from serial to parallel, and M Walsh
A Walsh sequence generator for generating a sequence, and M Wa
r1 (0 ≦ r1 ≦ M) sequences in the lsh sequence
Selector for selecting the number of sequences and the polarity, a transmission M-sequence generator for generating r M-sequences to be transmitted in parallel with the Walsh sequence, and an initial phase of the r M-sequences according to the combination of the transmission data. A phase selector for selecting a predetermined specific phase, an adder for transmitting in parallel the r M sequences whose initial phase is selected together with the Walsh sequence selected by the selector, and a high-frequency carrier wave for the output of the adder And a transmitting antenna for transmitting the output signal of the transmitting unit to the air, the receiving device receives the incoming signal, and receives the high-frequency signal received by the receiving antenna. A receiving unit that converts the signal into a baseband signal, a pseudo noise sequence synchronization unit that extracts the timing of r M sequences in the baseband signal, and a timing extraction unit that extracts the timing in the pseudo noise sequence synchronization unit. r pieces of M-sequence reception system generates the same M sequence and r pieces of M-sequence at the same timing as M
A sequence generator, a subtractor for removing r M sequences from the baseband signal, and M Walsh sequences as the reference side as a reference sequence, and M reference signals for the output signal of the subtractor A despreading unit that performs despreading on the sequences in parallel, a phase detection unit that detects the initial phases of the r M sequences from the output signal of the subtractor, and despreading for each reference sequence in the output signal of the despreading unit A Walsh sequence extraction determination unit that extracts r1 Walsh sequences selected from the M Walsh sequences based on the magnitude of the output, and a synchronization that extracts a clock timing from an output signal of the despreading unit and performs synchronization control. A control unit, a data determination unit that determines a data sequence from an output signal of the Walsh sequence extraction determination unit and an output signal of the phase detection unit, and a parallel-serial conversion unit that serially converts output data of the data determination unit. Have.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The first aspect of the present invention is a wireless modulation / demodulation system for high-speed transmission comprising a transmission device and a reception device, wherein the transmission device converts transmission data from serial to parallel. A serial-to-parallel converter,
A Walsh sequence generator that generates M Walsh sequences and r1 (0 ≦ r1 ≦ M) sequences in the M Walsh sequences corresponding to the combination of the serial-parallel-converted transmission data and r1 Selector for selecting the series and polarity of
A transmission M-sequence generator for generating r M-sequences to be transmitted in parallel with the lsh sequence, and a phase selector for selecting a specific phase determined according to a combination of transmission data for the initial phases of the r M-sequences And Wals selected by selector
an adder for parallel transmission of the r M sequences whose initial phase is selected together with the h sequence, a transmission unit for transmitting the output of the adder on a high-frequency carrier, and transmitting an output signal of the transmission unit to the air A receiving antenna that receives an incoming signal, a receiving unit that converts a high-frequency signal received by the receiving antenna into a baseband signal, and r reception signals in the baseband signal. A pseudo-noise sequence synchronizer for extracting the timing of the M-sequence, and a reception for generating the same M-sequence as the r-M-sequence at the same timing as the r-M-sequence based on the timing extraction in the pseudo-noise-sequence synchronizer System M-sequence generator and r from the baseband signal
A subtractor for removing M M sequences, and a despreading unit that uses the same M Walsh sequences as the transmitting side as reference sequences and despreads the output signal of the subtractor in parallel with M reference sequences respectively. Unit, a phase detection unit for detecting the initial phases of r M sequences from the output signal of the subtractor, and M number of M sequences based on the magnitude of the despread output for each reference sequence in the output signal of the despreading unit. Wa
Extract r1 Walsh sequences selected from lsh sequences
A Walsh sequence extraction determination unit, a synchronization control unit that extracts clock timing from the output signal of the despreading unit and performs synchronization control, and determines a data sequence from the output signal of the Walsh sequence extraction determination unit and the output signal of the phase detection unit A data determination unit and a parallel-serial conversion unit for converting output data of the data determination unit into serial data;
In this case, the symbol rate is reduced for each sequence, r1 Walsh sequences are extracted from each despread output of each of the M Walsh sequences, symbols are reproduced, and data is demodulated.

According to a second aspect of the present invention, there is provided a wireless modulation / demodulation system for high-speed transmission comprising a transmitting device and a receiving device, wherein the transmitting device converts a serial-to-parallel transmission data from serial to parallel; A square-residue-sequence generation unit that generates a number of square-residue sequences is associated with r1 (0 ≦ r1 ≦ M) sequences of the M square-residue sequences according to a combination of serial-parallel-converted transmission data.
a selector for selecting r1 sequences and a polarity, a transmission M-sequence generator for generating r M-sequences to be transmitted in parallel with the quadratic residue sequence, and a combination of transmission data for the initial phases of the r M-sequences A phase selector for selecting a specific phase determined in accordance with the adder, an adder for transmitting, in parallel, r M-sequences whose initial phase is selected together with the quadratic residue sequence selected by the selector, and an output of the adder. A transmitting unit that transmits on a high-frequency carrier wave, and a transmitting antenna that transmits the output signal of the transmitting unit to the air, the receiving device receives the incoming signal, and the receiving antenna receives the signal. A receiving unit that converts a high-frequency signal into a baseband signal, a pseudo-noise sequence synchronization unit that extracts the timing of r M sequences in the baseband signal, and a timing extraction in the pseudo-noise sequence synchronization unit A reception system M-sequence generator for generating the r M-sequence and the same M-sequence at the same timing as the r M-sequence based, from among the baseband signal r pieces M
A subtractor for removing the sequence, and the same M remainder square sequences as those on the transmitting side are used as reference sequences, and M
A despreading unit that performs despreading in parallel with the reference sequences, a phase detection unit that detects initial phases of r M sequences from output signals of the subtracters, and each reference sequence in the output signal of the despreading unit A quadratic residue sequence extraction determination unit that extracts r1 square residue sequences selected from the M square residue sequences based on the magnitude of the despread output for, and a clock timing from the output signal of the despreading unit. A synchronization control unit that performs synchronization control, a data determination unit that determines a data sequence from the output signal of the square residue sequence extraction determination unit and the output signal of the phase detection unit,
And a parallel-serial conversion unit for converting output data of the data determination unit into serial data. The symbol rate is reduced by a plurality of M series, and r1 is obtained from each despread output by each of the M square residue series. This has the effect of extracting the quadratic residue sequences, reproducing the symbols, and demodulating the data.

According to a third aspect of the present invention, there is provided a wireless modulation / demodulation system for high-speed transmission including a transmission device and a reception device, wherein the transmission device converts a transmission data from serial to parallel, An M-sequence generation unit for generating M M-sequences, and r1 in M M-sequences according to a combination of serial-parallel-converted transmission data
A selector for selecting r1 sequences and polarity in correspondence with (0 ≦ r1 ≦ M) sequences, a transmission M-sequence generator for generating r M sequences to be transmitted in parallel with the M sequences, and r A phase selector for selecting a specific phase determined according to a combination of transmission data for the initial phases of the M sequences, and r M sequences whose initial phase is selected together with the M sequences selected by the selector are transmitted in parallel An adder for performing, a transmitting unit that transmits the output of the adder on a high-frequency carrier, and a transmitting antenna that transmits an output signal of the transmitting unit to the air,
The receiving apparatus includes: a receiving antenna that receives an incoming signal; a receiving unit that converts a high-frequency signal received by the receiving antenna into a baseband signal; and a pseudo noise that extracts timing of r M sequences in the baseband signal. A sequence synchronizing unit, a receiving M-sequence generating unit that generates the same M sequences as the r M sequences at the same timing as the r M sequences based on the timing extraction in the pseudo noise sequence synchronizing unit, A subtractor for removing r M sequences from the signal;
A despreading unit that uses the same M M sequences as those on the transmission side as reference sequences, and performs despreading on the output signals of the subtracters in parallel with the M reference sequences, respectively, and r M sequences from the output signals of the subtractors. Extraction of r1 M-sequences selected from M M-sequences based on the magnitude of the despread output for each reference sequence in the output signal of the despreading unit and the phase detection unit for detecting the initial phase of the sequence M-sequence extraction judging unit, a synchronization control unit that extracts the clock timing from the output signal of the despreading unit and performs synchronization control, and judges the data sequence from the output signal of the M-sequence extraction judging unit and the output signal of the phase detection unit And a parallel-serial conversion unit that converts the output data of the data determination unit into serial data. The symbol rate is reduced by a plurality of M sequences, and each of the M M sequences is used. Despread output from r Number of M-sequence been extracted, the symbol is reproduced, it has the effect that the data is demodulated.

According to a fourth aspect of the present invention, in the third aspect, a cross-correlation component between r1 M sequences is compensated from a despread output for each reference sequence in an output signal of the despreading unit. M that extracts r1 M-sequences selected from M M-sequences based on the magnitude of the despread output for each reference sequence in the output signal of the despreading unit. R1 selected from M M sequences based on the output signal of the cross-correlation compensator instead of the sequence extraction determiner
A plurality of M sequences, the symbol rate of which is reduced, and M despread outputs by the M M sequences are used for each of the M M sequences. The cross-correlation component between the M sequences is compensated, r1 M sequences are extracted from the output, symbols are reproduced, and data is demodulated.

According to a fifth aspect of the present invention, there is provided a wireless modulation / demodulation system for high-speed transmission comprising a transmitting device and a receiving device, wherein the transmitting device comprises: a serial / parallel converter for converting transmission data from serial to parallel; A Walsh sequence generator that generates Walsh sequences and M Walsh sequences according to a combination of serial-to-parallel converted transmission data
A selector for selecting the r1 sequences and the polarity by associating r1 (0 ≦ r1 ≦ M) sequences in the sequence, and a transmission system Gold sequence generation for generating r Gold sequences to be transmitted in parallel with the Walsh sequence Part, a phase selector for selecting a specific phase determined according to a combination of transmission data with respect to the initial phases of r Gold sequences, and r Gold sequences whose initial phases are selected together with the Walsh sequence selected by the selector. An adder for transmitting the sequence in parallel, a transmitting unit that transmits the output of the adder on a high-frequency carrier, and a transmitting antenna that transmits an output signal of the transmitting unit to the air, the receiving device includes: A receiving antenna that receives an incoming signal, a receiving unit that converts a high-frequency signal received by the receiving antenna into a baseband signal, and a pseudo-noise sequence synchronization unit that extracts the timing of r Gold sequences in the baseband signal ,pseudo A receiving system Gold sequence generation unit that generates the same Gold sequence as the r Gold sequences at the same timing as the r Gold sequences based on the timing extraction in the sound sequence synchronization unit; A subtractor for removing the Gold sequence; a despreading unit for performing despreading on the output signals of the subtractor in parallel with the M reference sequences, respectively, using the same M Walsh sequences as the transmitting side as reference sequences. , A phase detector for detecting the initial phases of the r Gold sequences from the output signal of the subtractor, and M
A Walsh sequence extraction judging unit that extracts r1 Walsh sequences selected from the Walsh sequences, a synchronization control unit that extracts a clock timing from an output signal of the despreading unit and performs synchronization control, and a Walsh sequence extraction judging unit A data determination unit that determines a data sequence from the output signal of
And a parallel-serial conversion unit for converting output data of the data determination unit into serial data. The symbol rate is reduced by a plurality of M series, and each of M M Wales
r1 Walsh sequences are extracted from each despread output by the h sequence, symbols are reproduced, and data is demodulated.

According to a sixth aspect of the present invention, there is provided a high-speed transmission wireless modulation / demodulation system comprising a transmission device and a reception device, wherein the transmission device converts a transmission data from serial to parallel, A Gold sequence generator for generating M Gold sequences and r1 (0 ≦ r1 ≦ M) sequences in the M Gold sequences according to the combination of the serial-parallel-converted transmission data and r1 A selector for selecting a sequence and a polarity of a transmission sequence, a transmission system M sequence generation unit for generating r M sequences to be transmitted in parallel with the Gold sequence,
A phase selector for selecting a specific phase determined according to a combination of transmission data for the initial phases of the M sequences, and r M sequences for which the initial phase is selected together with the Gold sequence selected by the selector in parallel And an adder to
A transmitting unit that transmits the output of the adder on a high-frequency carrier wave, and a transmitting antenna that transmits an output signal of the transmitting unit to the air, the receiving device includes a receiving antenna that receives an incoming signal, A receiving unit that converts a high-frequency signal received by the side antenna into a baseband signal, a pseudo-noise sequence synchronization unit that extracts timing of r M sequences in the baseband signal, and a timing extraction in the pseudo-noise sequence synchronization unit. Based on the same timing as the r M sequences, r M
A receiving M-sequence generator for generating the same M-sequence as the sequence, a subtractor for removing r M-sequences from the baseband signal, and the same M Gold sequences as the transmitting side as reference sequences, A despreading unit that performs despreading on the output signal of the subtractor in parallel with M reference sequences, a phase detection unit that detects an initial phase of r M sequences from the output signal of the subtractor, R1 selected from the M Gold sequences based on the magnitude of the despread output for each reference sequence in the output signal of the unit
Gold sequence extraction determination unit that extracts Gold sequences, a synchronization control unit that performs synchronization control by extracting clock timing from the output signal of the despreading unit, an output signal of the Walsh sequence extraction determination unit, and an output of the phase detection unit A data determination unit for determining a data sequence from a signal; and a parallel-serial conversion unit for converting output data of the data determination unit into serial data. R1 from each despread output by each Gold sequence of
It has the effect that a Gold sequence is extracted, symbols are reproduced, and data is demodulated.

According to a seventh aspect of the present invention, in the invention according to the sixth aspect, the cross-correlation component between r1 M sequences is compensated from the despread output for each reference sequence in the output signal of the despreading unit. And extracting r1 Gold sequences selected from the M Gold sequences based on the magnitude of the despread output for each reference sequence in the output signal of the despreading unit. In place of the sequence extraction determination unit, a Gold sequence extraction determination unit that extracts r1 Gold sequences selected from the M Gold sequences based on the output signal of the cross-correlation compensation unit, The symbol rate is reduced by a plurality of M sequences, and the cross-correlation component between the M Gold sequences is compensated for each despread output by the M Gold sequences, and r1 Gold sequences are extracted from the output. The symbol is recovered and the data is demodulated. It has the effect of that.

According to an eighth aspect of the present invention, in the first aspect of the present invention, the output of the adder is replaced by a T-phase PSK instead of the transmitting section for transmitting the output of the adder on a high-frequency carrier wave.
A T-phase PSK modulation unit that modulates and transmits the signal on a high-frequency carrier is provided. A T-phase PSK demodulation unit for converting to a band signal and performing T-phase PSK demodulation is provided. The symbol rate is reduced by a plurality of M sequences, and after T-phase PSK demodulation, each of M M Walsh sequences is used. R1 Walsh sequences are extracted from each despread output, symbols are reproduced, and data is demodulated.

According to a ninth aspect of the present invention, in the first aspect of the present invention, the output of the adder is replaced by a T-value FSK instead of the transmitting section for transmitting the output of the adder on a high-frequency carrier wave.
A T-value FSK modulator for modulating and transmitting the signal on a high-frequency carrier is provided. A T-value FSK demodulation unit for converting to a band signal and performing T-value FSD demodulation is provided. The symbol rate is reduced by a plurality of M sequences, and after T-value FSK demodulation, each of M M Walsh sequences is used. R1 Walsh sequences are extracted from each despread output, symbols are reproduced, and data is demodulated.

According to a tenth aspect of the present invention, in the first aspect of the present invention, a Walsh sequence is transmitted in parallel with the Walsh sequence, and instead of the transmitting M-sequence generating unit for generating r M-sequences, Wals sequences are replaced by Wals sequences.
The transmission M-sequence generation unit that generates r M-sequences having a sequence length longer than the Walsh sequence length and transmitted in parallel with the h-sequence is provided, and the symbol rate is reduced for a plurality of M-sequences. R1 Walsh sequences are extracted from each despread output of each of the M Walsh sequences, symbols are reproduced, and data is demodulated.

According to an eleventh aspect of the present invention, there is provided a wireless modulation / demodulation system for high-speed transmission including a transmission device and a reception device, wherein the transmission device converts a serial-to-parallel transmission data from serial to parallel; A Walsh sequence generator that generates Walsh sequences, and M Walsh sequences according to a combination of serial-to-parallel converted transmission data.
A selector for selecting r1 (0 ≦ r1 ≦ M) sequences in the sequence and selecting the r1 sequences and polarity, a transmission unit for transmitting the output of the selector on a high-frequency carrier, and an output of the transmission unit A transmitting antenna for transmitting a signal into the air, the receiving device receives a arriving signal, a receiving unit that converts a high-frequency signal received by the receiving antenna into a baseband signal, and a transmitting unit. A despreading unit that uses the same M Walsh sequences as reference sequences and performs despreading on the output signal of the receiving unit in parallel with the M reference sequences, and a despreading unit for each reference sequence in the output signal of the despreading unit. R1 Walsh selected from M Walsh sequences based on the magnitude of the spread output
A Walsh sequence extraction judging unit that extracts a sequence, a synchronization control unit that extracts the clock timing from the output signal of the despreading unit and performs synchronization control, and a data judgment unit that judges a data sequence from the output signal of the Walsh sequence extraction judging unit And a parallel-to-serial conversion unit that converts output data of the data determination unit into serial data. The symbol rate is reduced by a plurality of M sequences, and each despread output by each of the M Walsh sequences is used. It has an effect that r1 Walsh sequences are extracted, symbols are reproduced, and data is demodulated.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. (Embodiment 1) FIG. 1 is a block diagram showing a wireless modem system for high-speed transmission according to Embodiment 1 of the present invention.
In FIG. 1, 1A is a transmitting device, 2 is a serial-parallel converter, 3 is a Walsh sequence generator that generates M Walsh sequences (Walsh sequences), 4 is a selector, 5 is a transmitting M-sequence generator, 6 is Phase selector, 7 is an adder, 8 is a transmitting unit, 9a is a transmitting antenna, 9b is a receiving antenna,
10 is a receiving unit, 11 is a pseudo noise sequence synchronizing unit, 12 is a receiving M-sequence generating unit that generates r1 M sequences for reference,
13 and 14 are subtractors, 15 is a phase detector, 16 is a despreader that performs M despreads using the above M Walsh sequences as reference sequences, 17 is a Walsh sequence extraction determiner, and 18 is a data determiner. Unit, 19 is a synchronization control unit, 20 is a parallel-serial conversion unit, and 21A is a receiving device.

The operation of the high-speed transmission modulation / demodulation system configured as described above will be described below.

In the transmitting apparatus 1A, the transmission data td is converted into parallel data by the serial / parallel converter 2 in order to reduce the modulation speed. Then, according to the state of the converted output, r1 is selected from the M Walsh sequences prepared by the Walsh sequence generating unit 3 by the selector 4 (in this case, r1 ranges from 0 to M depending on the state of the parallel conversion output). Are selected) and the initial phases of the r M sequences output from the transmission M sequence generator 5 are selected according to the state of the conversion output. This is added to the above r1 Walsh sequences by the adder 7, and the output is placed on a high-frequency carrier by the transmitting unit 8, and the transmitting antenna 9
a.

In the receiving device 21A, the incoming signal is received by the receiving antenna 9b, and the receiving unit 10 converts the high-frequency signal received by the receiving antenna 9b into a baseband signal. From this output, the pseudo noise sequence synchronization unit 1
In 1, the timing of r M sequences in the baseband signal is extracted, and the same reference M sequence as the M sequence is extracted at the same timing as the r M sequences in the baseband signal based on the extracted timing. The M-sequence component is generated by the receiving M-sequence generation unit 12 and subtracted from the baseband signal by the subtractor 13 and the subtractor 14, thereby removing the component of the M-sequence from the baseband signal. For the output of the subtracter, the phase detector 15 first extracts the initial phases of the r M sequences selected by the transmitting device 1A, and the despreading unit 16 generates the same M Walsh sequences as the transmitting device 1A. Are used as reference sequences, and M kinds of despreading are performed. The Walsh sequence extraction determination unit 17 identifies r1 despread outputs, and extracts r1 Walsh sequences selected by the transmitting apparatus 1A. Then, based on the extraction result of the phase detection unit 15 together with the extraction result, the data determination unit 18 determines the transmission data sequence transmitted by the transmission device 1A. Then, based on the timing extracted by the synchronization control unit 19 from the output of the despreading unit 16, the transmission data sequence is serially converted by the parallel-serial conversion unit 20 and output as demodulated data rd.

In this case, the ratio R of the transmission data rate to the modulation speed is calculated by (Equation 1).

[0028]

(Equation 1) It can be seen from the equation (1) that the ratio R can take a value of 1 or more in spite of the spread spectrum method, and increases as M increases. That is, more information can be transmitted in a narrower frequency band, and the efficiency of frequency use and the capacity can be further increased. Furthermore, as the Walsh sequence length increases, the Walsh sequence extraction determination unit 17 wants to extract a threshold when identifying r1 despread outputs having a large output from among the despread outputs for each reference sequence. The r1 despread output levels are higher. In other words, the demodulation accuracy for C / N is further improved.

As described above, according to the present embodiment, transmitting apparatus 1A includes serial-parallel conversion section 2 for converting transmission data td from serial to parallel, and Walsh sequence generating section 3 for generating M Walsh sequences. A selector 4 for selecting r1 sequences and polarity by associating r1 (0 ≦ r1 ≦ M) sequences in the M Walsh sequences in accordance with a combination of serial-parallel-converted transmission data td; Transmission system M for generating r M sequences to be transmitted in parallel with Walsh sequences
The sequence generator 5, a phase selector 6 for selecting a specific phase determined according to a combination of the transmission data td for the r initial phases of the M sequences, and a phase selector 6 for selecting
An adder 7 for parallel transmission of r M sequences whose initial phase is selected together with a Walsh sequence, a transmitting unit 8 for transmitting the output of the adder 7 on a high-frequency carrier, and an output signal of the transmitting unit. A receiving antenna 21a for transmitting an incoming signal; and a transmitting antenna 9a for transmitting to the air.
b, a receiving unit 10 for converting a high-frequency signal received by the receiving antenna 9b into a baseband signal, a pseudo-noise sequence synchronization unit 11 for extracting the timing of r M sequences in the baseband signal, and a pseudo-noise sequence A receiving system M-sequence generating unit 12 for generating the same M sequence as the r M sequences at the same timing as the r M sequences based on the timing extraction in the synchronization unit 11; M
Subtractors 13 and 14 for removing sequences, and M Walsh sequences same as those on the transmitting side are used as reference sequences, and M output sequences of subtractors 13 and 14 are despread in parallel with M reference sequences, respectively. A despreading unit 16 and a phase detection unit 15 for detecting the initial phases of r M sequences from the output signals of the subtractors 13 and 14
A Walsh sequence extraction determination unit 17 that extracts r1 Walsh sequences selected from the M Walsh sequences based on the magnitude of the despread output for each reference sequence in the output signal of the despreading unit 16; A synchronization control unit 19 that extracts a clock timing from an output signal of the despreading unit 16 and performs synchronization control;
Output signal of Walsh sequence extraction determining section 17 and phase detecting section 15
Data judging section 18 for judging a data series from the output signal of
And a parallel-to-serial conversion unit 20 for converting output data of the data determination unit 18 into serial data, so that the symbol rate can be reduced for a plurality of M Walsh sequences, and the M Walsh sequences are used. Since r1 Walsh sequences can be extracted from each despread output and symbols can be reproduced and data can be demodulated, 1
As the amount of information per symbol becomes larger, the demodulation accuracy for C / N is further improved, and the efficiency of frequency use and the increase in capacity become possible.

(Embodiment 2) FIG. 2 is a block diagram showing a high-speed transmission wireless modulation / demodulation system according to Embodiment 2 of the present invention. 2, a serial / parallel conversion unit 2, a selector 4, a transmission system M sequence generation unit 5, a phase selector 6, an adder 7, a transmission unit 8, a transmission antenna 9a, a reception antenna 9b, a reception unit 10, a pseudo noise sequence Synchronization unit 11,
Receiving-system M-sequence generator 12 for generating r1 M-sequences for reference, subtractors 13 and 14, phase detector 15, despreader 16, data determiner 18, synchronization controller 19, parallel-serial converter 20 Are the same as those in FIG. 1B is a transmitting device, 21B is a receiving device, 22 is a square-residue sequence generating unit that generates M square-residue sequences, and 23 is a square-residue sequence extraction determination unit.

The operation of the high-speed transmission wireless modulation / demodulation system configured as described above will be described below.

In the transmitting apparatus 1B, the transmission data td is converted into parallel data by the serial / parallel converter 2 in order to reduce the modulation speed. Then, according to the state of the converted output, the selector 4 selects r1 (in this case, r1 from 0 in accordance with the state of the parallel conversion output) from the M squared residue sequences prepared by the squared residue sequence generator 22. In addition to selecting the sequences (which can take values up to M), the initial phases of the r M sequences output from the transmission M sequence generator 5 are selected according to the state of the conversion output. Then, this is added to the above-mentioned r1 square residue sequences by the adder 7, and the output is placed on a high-frequency carrier wave by the transmitting section 8 and transmitted from the transmitting antenna 9a to the air.

In the receiving device 21B, the incoming signal is received by the receiving antenna 9b, and the receiving unit 10 converts the high-frequency signal received by the receiving antenna 9b into a baseband signal. From this output, the pseudo noise sequence synchronization unit 1
In 1, the timing of r M sequences in the baseband signal is extracted, and the same reference M sequence as the M sequence is extracted at the same timing as the r M sequences in the baseband signal based on the extracted timing. The M-sequence component is generated by the receiving M-sequence generation unit 12 and subtracted from the baseband signal by the subtractor 13 and the subtractor 14, thereby removing the component of the M-sequence from the baseband signal. From the output of the subtracter, the phase detector 15 first extracts the initial phases of the r M sequences selected by the transmitter 1B, and the despreader 16 outputs the same M square residues as the transmitter 1B. M types of despreading are performed using the sequence as a reference sequence. Then, the output is given by the square residue series extraction determination unit 23 as r
By identifying one despread output, r1 square-residue sequences selected by the transmitting apparatus 1B are extracted. Then, based on the extraction result of the phase detection unit 15 together with the extraction result, the data determination unit 18 determines the transmission data sequence transmitted by the transmission device 1B. Then, based on the timing extracted from the output of the despreading unit 16 by the synchronization control unit 19, the transmission data sequence is converted to serial by the parallel / serial conversion unit 20, and the demodulated data r
Output as d.

In this case, the ratio R of the transmission data rate to the modulation speed is calculated by the above (Equation 1). (Equation 1) shows that the ratio R can take a value of 1 or more, and increases as M increases, even in the spread spectrum method. That is, more information can be transmitted in a narrower frequency band, and the efficiency of frequency use and the capacity can be further increased. Further, by increasing the square residue sequence length, the square residue sequence extraction determination unit 2
In 3, the r1 despread output level to be extracted is larger than the threshold for identifying r1 despread outputs having a large output from among the despread outputs for each reference sequence. In other words, the demodulation accuracy for C / N is further improved.

As described above, according to the present embodiment, the square residue sequence generator 22 for generating M square residue sequences is provided in the transmitter 1B, and the square residue sequence extraction determiner 23 is provided in the receiver 21B. As a result, the symbol rate can be reduced with a plurality of M square-remainder sequences, and r1 square-remainder sequences can be extracted from each despread output of each of the M square-remainder sequences to reproduce symbols. Since the data amount can be demodulated, as the amount of information per symbol becomes larger, the demodulation accuracy for C / N is further improved, and the efficiency of frequency use and the capacity increase can be achieved.

(Embodiment 3) FIG. 3 is a block diagram showing a wireless modulation / demodulation system for high-speed transmission according to Embodiment 3 of the present invention. 3, a serial / parallel conversion unit 2, a selector 4, a transmission M-sequence generation unit 5, a phase selector 6, an adder 7, a transmission unit 8, a transmission antenna 9a, a reception antenna 9b, a reception unit 10, a pseudo noise sequence Synchronization unit 11,
Receiving-system M-sequence generator 12 for generating r1 M-sequences for reference, subtractors 13 and 14, phase detector 15, despreader 16, data determiner 18, synchronization controller 19, parallel-serial converter 20 Are the same as those in FIG. 1C is a transmitting device, 21C is a receiving device, 24 is an M-sequence generating unit that generates M M sequences, and 25 is an M-sequence extraction determining unit.

The operation of the high-speed transmission wireless modulation / demodulation system configured as described above will be described below.

In the transmitting apparatus 1C, the transmission data td is converted into parallel data by the serial / parallel converter 2 in order to reduce the modulation speed. Then, according to the state of the converted output, the selector 4 selects r1 from the M M sequences prepared by the M sequence generator 24 (in this case, r1 ranges from 0 to M depending on the state of the parallel conversion output). Are selected), and the initial phase of another r M sequences output from the transmission M sequence generator 5 is selected according to the state of the conversion output. And this is r
One M-sequence is added to an adder 7 and the output is sent to a transmitting unit 8
And transmits the signal to the air from the transmitting antenna 9a.

In the receiving device 21C, the incoming signal is received by the receiving antenna 9b, and the receiving unit 10 converts the high-frequency signal received by the receiving antenna 9b into a baseband signal. From this output, the pseudo noise sequence synchronization unit 1
In 1, the timing of r M sequences in the baseband signal is extracted, and the same reference M sequence as the M sequence is extracted at the same timing as the r M sequences in the baseband signal based on the extracted timing. The M-sequence component is generated by the receiving M-sequence generation unit 12 and subtracted from the baseband signal by the subtractor 13 and the subtractor 14, thereby removing the component of the M-sequence from the baseband signal. With respect to the output of the subtracter, first, the phase detector 15 extracts the initial phases of the r M sequences selected by the transmitting device 1C, and the despreading unit 16 outputs the same M M sequences as those of the transmitting device 1C. Are used as reference sequences, and M kinds of despreading are performed. Then, the output is identified by the M-sequence extraction determination unit 25 to identify r1 despread outputs, thereby obtaining r1 selected by the transmitting apparatus 1C.
Extract M sequences. Then, based on the extraction result of the phase detection unit 15 together with the extraction result, the data determination unit 18 determines the transmission data sequence transmitted by the transmission device 1C. Then, based on the timing extracted from the output of the despreading unit 16 by the synchronization control unit 19,
The transmission data sequence is converted to serial data by the parallel-serial conversion unit 20 and output as demodulated data rd.

In this case, the ratio R of the transmission data rate to the modulation speed is calculated by (Equation 1). From (Equation 1), the ratio R is 1 while the spread spectrum method is used.
It can be seen that the above values can be taken, and that M increases as M increases. That is, more information can be transmitted in a narrower frequency band, and the efficiency of frequency use and the capacity can be further increased. Furthermore, as the M-sequence length increases, the M-sequence extraction determination unit 25 wants to extract a threshold at which r1 large-output despread outputs are identified from among the despread outputs for each reference sequence. The r1 despread output levels are higher.
In other words, the demodulation accuracy for C / N is further improved.

As described above, according to the present embodiment, M-sequence generating section 24 for generating M M-sequences includes transmitting apparatus 1C
And the provision of the M-sequence extraction determination unit 25 in the receiving device 21C, the symbol rate can be reduced for a plurality of M M-sequences, and r1 M Since a sequence can be extracted, symbols can be reproduced, and data can be demodulated, as the amount of information per symbol becomes larger, the demodulation accuracy for C / N is more improved and the efficiency of frequency use is improved. And large capacity is possible.

(Embodiment 4) FIG. 4 is a block diagram showing a wireless modulation / demodulation system for high-speed transmission according to Embodiment 4 of the present invention. 4, a serial / parallel conversion unit 2, a selector 4, a transmission system M sequence generation unit 5, a phase selector 6, an adder 7, a transmission unit 8, a transmission antenna 9a, a reception antenna 9b, a reception unit 10, a pseudo noise sequence Synchronization unit 11,
Receiving-system M-sequence generator 12 for generating r1 M-sequences for reference, subtractors 13 and 14, phase detector 15, despreader 16, data determiner 18, synchronization controller 19, parallel-serial converter 20 , M-sequence generator 24 and M-sequence extraction determiner 25 for generating M M-sequences are the same as those in FIG. 1D is a transmitter, 21D is a receiver, and 26 is a cross-correlation compensator.

The operation of the wireless modulation / demodulation system for high-speed transmission configured as described above will be described below.

In the transmitting apparatus 1D, the transmission data td is converted into parallel data by the serial / parallel converter 2 in order to reduce the modulation speed. Then, according to the state of the converted output, the selector 4 selects r1 from the M M sequences prepared by the M sequence generator 24 (in this case, r1 ranges from 0 to M depending on the state of the parallel conversion output). Are selected), and the initial phase of another r M sequences output from the transmission M sequence generator 5 is selected according to the state of the conversion output. And this is r
One M-sequence is added to an adder 7 and the output is sent to a transmitting unit 8
And transmits the signal to the air from the transmitting antenna 9a.

In the receiving device 21D, the incoming signal is received by the receiving antenna 9b, and the receiving unit 10 converts the high-frequency signal received by the receiving antenna 9b into a baseband signal. From this output, the pseudo noise sequence synchronization unit 1
In 1, the timing of r M sequences in the baseband signal is extracted, and the same reference M sequence as the M sequence is extracted at the same timing as the r M sequences in the baseband signal based on the extracted timing. The M-sequence component is generated by the receiving M-sequence generation unit 12 and subtracted from the baseband signal by the subtractor 13 and the subtractor 14, thereby removing the component of the M-sequence from the baseband signal. With respect to the output of the subtracter, the phase detector 15 first extracts the initial phases of the r M sequences selected by the transmitter 1D, and the despreader 16 outputs the same M M sequences as the transmitter 1D. Are used as reference sequences, and M kinds of despreading are performed. Then, the cross-correlation component between each of the M M-sequences is compensated for the output by the cross-correlation compensating unit 26, and r1 despread outputs are identified from the output by the M-sequence extraction determining unit 25.
The transmitting apparatus 1D extracts r1 M-sequences selected.
Then, based on the extraction result of the phase detection unit 15 together with the extraction result, the data determination unit 18 determines the transmission data sequence transmitted by the transmission device 1D. Then, based on the timing extracted by the synchronization control unit 19 from the output of the despreading unit 16, the parallel-to-serial conversion unit 20 converts the transmission data sequence into serial,
Output as demodulated data rd.

In this case, the ratio R of the transmission data rate to the modulation speed is calculated by (Equation 1). From (Equation 1), the ratio R is 1 while the spread spectrum method is used.
It can be seen that the above values can be taken, and that M increases as M increases. That is, more information can be transmitted in a narrower frequency band, and the efficiency of frequency use and the capacity can be further increased. Furthermore, as the M-sequence length increases, the M-sequence extraction determination unit 25 wants to extract a threshold at which r1 large-output despread outputs are identified from among the despread outputs for each reference sequence. The r1 despread output levels are higher.
In other words, the demodulation accuracy for C / N is further improved.

As described above, according to the present embodiment, M-sequence generating section 24 for generating M M-sequences is provided by transmitting apparatus 1D
And the M-sequence extraction determining unit 25 and the cross-correlation compensating unit 26 are provided in the receiving apparatus 21D, so that the symbol rate can be reduced for a plurality of M M-sequences, A cross-correlation component between M M sequences is compensated for the output, r1 M sequences are extracted from the output, symbols can be reproduced, and data can be demodulated. The greater the amount of information per hit, the more the demodulation accuracy for C / N is improved,
Efficient use of frequency and large capacity can be achieved.

(Embodiment 5) FIG. 5 is a block diagram showing a wireless modulation / demodulation system for high-speed transmission according to Embodiment 5 of the present invention. 5, a serial / parallel conversion unit 2, a Walsh sequence generation unit 3, a selector 4, a phase selector 6, an adder 7, a transmission unit 8, a transmission side antenna 9a, a reception side antenna 9b, a reception unit 10, a pseudo noise sequence synchronization unit 11,
Subtracters 13 and 14, phase detector 15, despreader 16, Wa
The lsh sequence extraction determination unit 17, data determination unit 18, synchronization control unit 19, and parallel-serial conversion unit 20 are the same as those in FIG. 1E is a transmission device, 21E is a reception device, 27 is a transmission system Gold sequence generation unit (gold sequence generation unit), and 28 is r1 Gos for reference.
This is a receiving Gold sequence generation unit that generates an ld sequence.

The operation of the high-speed transmission wireless modulation / demodulation system configured as described above will be described below.

In the transmitting apparatus 1E, the transmission data 1 is converted into parallel data by the serial / parallel converter 2 in order to reduce the modulation speed. Then, according to the state of the converted output, r1 is selected from the M Walsh sequences prepared by the Walsh sequence generating unit 3 by the selector 4 (in this case, r1 ranges from 0 to M according to the state of the parallel converted output). Are selected) and the initial phases of r Gold sequences output from the transmission Gold sequence generation unit 27 are selected according to the state of the conversion output. Then, this is added to the above r1 Walsh sequences by the adder 7, and the output is placed on a high-frequency carrier by the transmitting unit 8 and transmitted from the transmitting antenna 9a to the air.

In the receiving apparatus 21E, the incoming signal is received by the receiving antenna 9b, and the receiving unit 10 converts the high-frequency signal received by the receiving antenna 9b into a baseband signal. From this output, the pseudo noise sequence synchronization unit 1
In 1, the timing of r Gold sequences in the baseband signal is extracted, and based on the extracted timings, the r Gold sequences in the baseband signal are extracted at the same timing as the r Gold sequences in the baseband signal.
The same Gold sequence for reference as the Gold sequence is generated in the receiving system Gold sequence generation unit 28, and this is subtracted from the baseband signal by the subtractor 13 and the subtractor 14, thereby obtaining the Gold sequence from the baseband signal. Is removed. With respect to the output of the subtracter, the phase detector 15 first extracts the initial phases of the r Gold sequences selected by the transmitter 1E, and the despreader 16 extracts the same M Walsh sequences as the transmitter 1E. Are used as reference sequences, and M kinds of despreading are performed. The output is output to the Walsh sequence extraction determination unit 17.
By extracting r1 despread outputs, r1 Walsh sequences selected by the transmitting apparatus 1E are extracted. Then, based on the extraction result of the phase detection unit 15 together with the extraction result, the data determination unit 18 determines the transmission data sequence transmitted by the transmission device 1E. And
Based on the timing extracted by the synchronization control unit 19 from the output of the despreading unit 16, the parallel / serial conversion unit 2
The transmission data sequence is converted into a serial signal by 0 and output as demodulated data rd.

In this case, the ratio R of the transmission data rate to the modulation speed is calculated by (Equation 1). From (Equation 1), the ratio R is 1 while the spread spectrum method is used.
It can be seen that the above values can be taken, and that M increases as M increases. That is, more information can be transmitted in a narrower frequency band, and the efficiency of frequency use and the capacity can be further increased. Further, as the Walsh sequence length increases, the Walsh sequence extraction determination unit 17 wants to extract a threshold for identifying r1 large despread outputs from among the despread outputs for each reference sequence. The r1 despread output levels are higher. In other words, the demodulation accuracy for C / N is further improved.

As described above, according to the present embodiment, the symbol rate can be reduced for a plurality of M Walsh sequences, and r1 Walsh sequences are extracted from each despread output of each of the M Walsh sequences. , Symbols can be reproduced, and data can be demodulated. Therefore, as the amount of information per symbol becomes larger, the demodulation accuracy for C / N is further improved, and the efficiency of frequency use and the increase in capacity are increased. Becomes possible.

(Embodiment 6) FIG. 6 is a block diagram showing a wireless modulation / demodulation system for high-speed transmission according to Embodiment 6 of the present invention. 6, a serial / parallel converter 2, a selector 4, an M-sequence generator 5, a phase selector 6, an adder 7, a transmitter 8, a transmitting antenna 9a, a receiving antenna 9b, a receiver 10, a pseudo noise sequence synchronizer 11, an M-sequence generator 12, subtractors 13, 14, a phase detector 15, a despreader 16, a data determiner 18, a synchronization controller 19, and a parallel-serial converter 20 are the same as those in FIG. And the description is omitted. 1F is the transmitting device, 21F
Is a receiving device, 29 is a Gold sequence generation unit that generates M Gold sequences, and 30 is a Gold sequence extraction determination unit.

The operation of the wireless modulation / demodulation system for high-speed transmission configured as described above will be described below.

In the transmitting apparatus 1F, the transmission data 1 is converted into parallel data by the serial / parallel converter 2 in order to reduce the modulation speed. Then, according to the state of the converted output, r1 is selected from the M Gold sequences prepared by the Gold sequence generating section 29 by the selector 4 (in this case, r1 is 0 to M depending on the state of the parallel conversion output). Are selected) and the initial phases of the r M sequences output from the transmission M sequence generator 5 are selected according to the state of the conversion output. And this is r1
Are added by the adder 7 and the output is sent to the transmission unit 8
And transmits the signal to the air from the transmitting antenna 9a.

In the receiving device 21F, the incoming signal is received by the receiving antenna 9b, and the receiving unit 10 converts the high-frequency signal received by the receiving antenna 9b into a baseband signal. From this output, the pseudo noise sequence synchronization unit 1
In 1, the timing of r M sequences in the baseband signal is extracted, and the same reference M sequence as the M sequence is extracted at the same timing as the r M sequences in the baseband signal based on the extracted timing. The M-sequence component is generated by the receiving M-sequence generation unit 12 and subtracted from the baseband signal by the subtractor 13 and the subtractor 14, thereby removing the component of the M-sequence from the baseband signal. For this subtractor output, the phase detector 15 first extracts the initial phases of the r M sequences selected by the transmitter 1F, and the despreader 16 outputs the same M Gold sequences as the transmitter 1F. Are used as reference sequences, and M kinds of despreading are performed. The output is used to extract r1 Gold sequences selected by the transmitting apparatus 1F by identifying r1 despread outputs by the Gold sequence extraction determination unit 30. Then, based on the extraction result of the phase detection unit 15 together with this extraction result, the data determination unit 18 determines the transmission data sequence transmitted by the transmission device 1F. Then, based on the timing extracted by the synchronization control unit 19 from the output of the despreading unit 16, the transmission data sequence is serially converted by the parallel-serial conversion unit 20 and output as demodulated data rd.

In this case, the ratio R of the transmission data rate to the modulation speed is calculated by (Equation 1). From (Equation 1), the ratio R is 1 while the spread spectrum method is used.
It can be seen that the above values can be taken, and that M increases as M increases. That is, more information can be transmitted in a narrower frequency band, and the efficiency of frequency use and the capacity can be further increased. Further, as the Gold sequence length increases, the Gold sequence extraction determination unit 30 selects r1 having the larger output from the despread output for each reference sequence.
With respect to the threshold for identifying the despread outputs, r1 despread output levels to be extracted are larger. In other words, the demodulation accuracy for C / N is further improved.

As described above, according to the present embodiment, Gold
By providing sequence generating section 29 in transmitting apparatus 1F and providing Gold sequence extraction determining section 30 in receiving apparatus 21F, a plurality of M
The symbol rate can be reduced for Gold sequences, and M
R1 Gold sequences can be extracted from each despread output of each of the Gold sequences, symbols can be reproduced, and data can be demodulated. The demodulation accuracy with respect to / N can be further improved, and the efficiency of frequency use and the capacity can be increased.

(Embodiment 7) FIG. 7 is a block diagram showing a wireless modulation / demodulation system for high-speed transmission according to Embodiment 7 of the present invention. 7, a serial / parallel converter 2, a selector 4, an M-sequence generator 5, a phase selector 6, an adder 7, a transmitter 8, a transmitter antenna 9a, a receiver antenna 9b, a receiver 10, a pseudo noise sequence synchronizer 11, M-sequence generator 12, subtractors 13, 14, phase detector 15, despreader 16, data determiner 18, synchronization controller 19, parallel-serial converter 20, Gold-sequence generator 29, Gold-sequence extraction / determination Since the unit 30 is the same as that in FIG. 6, the same reference numerals are given and the description is omitted. 1G is a transmitting device, 21G is a receiving device, and 31 is a cross-correlation compensator.

The operation of the wireless modulation / demodulation system for high-speed transmission configured as described above will be described below.

In the transmitting apparatus 1 G, the transmission data td is converted into parallel data by the serial / parallel converter 2 in order to reduce the modulation speed. Then, according to the state of the converted output, r1 is selected from the M Gold sequences prepared by the Gold sequence generating section 29 by the selector 4 (in this case, r1 is 0 to M depending on the state of the parallel conversion output). Are selected) and the initial phases of the r M sequences output from the transmission M sequence generator 5 are selected according to the state of the conversion output. And this is r
One Gold sequence is added to the adder 7 by the adder 7, and the output is placed on a high-frequency carrier by the transmitting unit 8 and transmitted from the transmitting antenna 9a to the air.

In the receiving apparatus 21G, the incoming signal is received by the receiving antenna 9b, and the receiving unit 10 converts the high-frequency signal received by the receiving antenna 9b into a baseband signal. From this output, the pseudo noise sequence synchronization unit 1
In 1, the timing of r M sequences in the baseband signal is extracted, and the same reference M sequence as the M sequence is extracted at the same timing as the r M sequences in the baseband signal based on the extracted timing. The M-sequence component is generated by the receiving M-sequence generation unit 12 and subtracted from the baseband signal by the subtractor 13 and the subtractor 14, thereby removing the component of the M-sequence from the baseband signal. With respect to the output of the subtracter, the phase detector 15 first extracts the initial phases of the r M sequences selected by the transmitter 1G, and the despreader 16 outputs the same M Gold sequences as the transmitter 1G. Are used as reference sequences, and M kinds of despreading are performed. The output is compensated for the cross-correlation component between each of the M M-sequences by the cross-correlation compensator 31, and the Gold-sequence extraction determiner 30 identifies r1 despread outputs from the output. The r1 Gold sequences selected by the transmitting device 1G are extracted. Then, together with this extraction result, the phase detection unit 1
5, the data determination unit 18 determines the transmission data sequence transmitted by the transmission device 1G. Then, based on the timing extracted by the synchronization control unit 19 from the output of the despreading unit 16, the transmission data sequence is serially converted by the parallel-serial conversion unit 20 and output as demodulated data rd.

In this case, the ratio R of the transmission data rate to the modulation speed is calculated by (Equation 1). From (Equation 1), the ratio R is 1 while the spread spectrum method is used.
It can be seen that the above values can be taken, and that M increases as M increases. That is, more information can be transmitted in a narrower frequency band, and the efficiency of frequency use and the capacity can be further increased. Further, as the Gold sequence length increases, the Gold sequence extraction determination unit 30 selects r1 having the larger output from the despread output for each reference sequence.
With respect to the threshold for identifying the despread outputs, r1 despread output levels to be extracted are larger. In other words, the demodulation accuracy for C / N is further improved.

As described above, according to the present embodiment, Gold
By providing sequence generating section 29 in transmitting apparatus 1G and providing Gold sequence extraction determining section 30 and transmitting cross-correlation compensating section 31 in receiving apparatus 21G, the symbol rate can be reduced for a plurality of M Gold sequences. The cross-correlation component between M Gold sequences is compensated for each despread output by each Gold sequence, r1 Gold sequences can be extracted from the output, symbols can be reproduced, and the data can be Since demodulation can be performed, as the amount of information per symbol becomes larger, the demodulation accuracy for C / N is further improved, and efficiency of frequency use and capacity increase can be achieved.

(Eighth Embodiment) FIG. 8 is a block diagram showing a high-speed transmission wireless modulation / demodulation system according to an eighth embodiment of the present invention. 8, a serial / parallel converter 2, a Walsh sequence generator 3, a selector 4, an M sequence generator 5, a phase selector 6, an adder 7, a transmitting antenna 9a,
Receiving antenna 9b, pseudo-noise sequence synchronization unit 11, M sequence generation unit 12, subtractors 13, 14, phase detection unit 15, despreading unit 16, Walsh sequence extraction determination unit 17, data determination unit 1
8, the synchronization control unit 19 and the parallel-serial conversion unit 20 are the same as those in FIG. 1H is a transmitting device, 21H is a receiving device, 32 is a T-phase PS.
A K modulator 33 is a T-phase PSK demodulator.

The operation of the high-speed transmission wireless modulation / demodulation system configured as described above will be described below.

In the transmitting apparatus 1H, the transmission data td is converted into parallel data by the serial / parallel converter 2 in order to reduce the modulation speed. Then, according to the state of the converted output, r1 is selected from the M Walsh sequences prepared by the Walsh sequence generating unit 3 by the selector 4 (in this case, r1 ranges from 0 to M depending on the state of the parallel conversion output). Are selected) and the initial phases of the r M sequences output from the transmission M sequence generator 5 are selected according to the state of the conversion output. Then, this is added to the above r1 Walsh sequences by the adder 7, and the output is T
The signal is subjected to T-phase PSK modulation by the phase PSK modulation unit 32 and is mounted on a high-frequency carrier wave and transmitted from the transmitting antenna 9a to the air.

In the receiving device 21H, the incoming signal is received by the receiving antenna 9b, and the T-phase PSK demodulation section 33 converts the high-frequency signal received by the receiving antenna 9b to T
Phase PSK demodulation and conversion to baseband signal. From the output, the pseudo-noise sequence synchronization unit 11 extracts the timing of the r M sequences in the baseband signal, and based on the extracted timings, extracts the M sequences at the same timing as the r M sequences in the baseband signal. By generating the same reference M-sequence in the receiving-system M-sequence generator 12 and subtracting this from the baseband signal by the subtractor 13 and the subtractor 14,
The M-sequence component is removed from the baseband signal. For this subtractor output, the phase detector 15 first extracts the initial phases of the r M sequences selected by the transmitter 1H, and the despreader 16 outputs the same M Walsh sequences as the transmitter 1H. Are used as reference sequences, and M kinds of despreading are performed. The output is identified by the Walsh sequence extraction determination unit 17 to identify r1 despread outputs, thereby extracting r1 Walsh sequences selected by the transmitting apparatus 1H. Then, based on the extraction result of the phase detection unit 15 together with the extraction result, the data determination unit 18 determines the transmission data sequence transmitted by the transmission device 1H. Then, based on the timing extracted by the synchronization control unit 19 from the output of the despreading unit 16, the transmission data sequence is serially converted by the parallel-serial conversion unit 20 and output as demodulated data rd.

In this case, the ratio R of the transmission data rate to the modulation speed is calculated by (Equation 1). From (Equation 1), the ratio R is 1 while the spread spectrum method is used.
It can be seen that the above values can be taken, and that M increases as M increases. That is, more information can be transmitted in a narrower frequency band, and the efficiency of frequency use and the capacity can be further increased. Further, as the Walsh sequence length increases, the Walsh sequence extraction determination unit 17 wants to extract a threshold for identifying r1 large despread outputs from among the despread outputs for each reference sequence. The r1 despread output levels are higher. In other words, the demodulation accuracy for C / N is further improved.

As described above, according to the present embodiment, the T phase
By providing the PSK modulation unit 32 in the transmission device 1H and providing the T-phase PSK demodulation unit 33 in the reception device 21H, a plurality of M
The symbol rate can be reduced with the Walsh sequence, and the T phase
After PSK demodulation, r1 Walsh sequences can be extracted from each despread output of each of the M Walsh sequences, symbols can be reproduced, and data can be demodulated. As the value becomes larger, the demodulation accuracy for C / N is further improved, and the efficiency of frequency use and the capacity increase can be achieved.

(Embodiment 9) FIG. 9 is a block diagram showing a wireless modulation / demodulation system for high-speed transmission according to Embodiment 9 of the present invention. In FIG. 9, a serial / parallel converter 2, a Walsh sequence generator 3, a selector 4, an M sequence generator 5, a phase selector 6, an adder 7, a transmitting antenna 9a,
Receiving antenna 9b, pseudo-noise sequence synchronization unit 11, M sequence generation unit 12, subtractors 13, 14, phase detection unit 15, despreading unit 16, Walsh sequence extraction determination unit 17, data determination unit 1
8, the synchronization control unit 19 and the parallel-serial conversion unit 20 are the same as those in FIG. 1J is a transmitting device, 21J is a receiving device, 34 is a T value FS
A K modulator 35 is a T-value FSK demodulator.

The operation of the high-speed transmission wireless modulation / demodulation system configured as described above will be described below.

In the transmitting device 1 J, the transmission data td is converted into parallel data by the serial / parallel converter 2 in order to reduce the modulation speed. Then, according to the state of the converted output, r1 is selected from the M Walsh sequences prepared by the Walsh sequence generating unit 3 by the selector 4 (in this case, r1 ranges from 0 to M depending on the state of the parallel conversion output). Are selected) and the initial phases of the r M sequences output from the transmission M sequence generator 5 are selected according to the state of the conversion output. Then, this is added to the above r1 Walsh sequences by the adder 7, and the output is T
T value FSK modulation is performed by the value FSK modulator 34, and the signal is mounted on a high-frequency carrier and transmitted from the transmitting antenna 9a to the air.

In the receiving apparatus 21J, the incoming signal is received by the receiving antenna 9b, and the high-frequency signal received by the receiving antenna 9b is received by the T-value FSK demodulator 35.
Value FSK Demodulate and convert to baseband signal. From the output, the pseudo-noise sequence synchronization unit 11 extracts the timing of the r M sequences in the baseband signal, and based on the extracted timings, extracts the M sequences at the same timing as the r M sequences in the baseband signal. By generating the same reference M-sequence in the receiving-system M-sequence generator 12 and subtracting this from the baseband signal by the subtractor 13 and the subtractor 14,
The M-sequence component is removed from the baseband signal. For the output of the subtracter, the phase detector 15 first extracts the initial phases of the r M sequences selected by the transmitting device 1J, and the despreading unit 16 generates the same M Walsh sequences as the transmitting device 1J. Are used as reference sequences, and M kinds of despreading are performed. The output is identified by the Walsh sequence extraction determination unit 17 to identify r1 despread outputs, thereby extracting r1 Walsh sequences selected by the transmitting apparatus 1J. Then, based on the extraction result and the extraction result of the phase detection unit 15, the data determination unit 18 determines the transmission data sequence transmitted by the transmission device 1J. Then, based on the timing extracted by the synchronization control unit 19 from the output of the despreading unit 16, the transmission data sequence is serially converted by the parallel-serial conversion unit 20 and output as demodulated data rd.

In this case, the ratio R of the transmission data rate to the modulation speed is calculated by (Equation 1). From (Equation 1), the ratio R is 1 while the spread spectrum method is used.
It can be seen that the above values can be taken, and that M increases as M increases. That is, more information can be transmitted in a narrower frequency band, and the efficiency of frequency use and the capacity can be further increased. Further, as the Walsh sequence length increases, the Walsh sequence extraction determination unit 17 wants to extract a threshold for identifying r1 large despread outputs from among the despread outputs for each reference sequence. The r1 despread output levels are higher. In other words, the demodulation accuracy for C / N is further improved.

As described above, according to the present embodiment, the T value
By providing the FSK modulator 34 in the transmitter 1J and the T-value FSK demodulator 35 in the receiver 21J, a plurality of M
Symbol rate can be reduced with Walsh sequence, T value
After FSK demodulation, r1 Walsh sequences can be extracted from each despread output of each of the M Walsh sequences, symbols can be reproduced, and data can be demodulated. As the value becomes larger, the demodulation accuracy for C / N is further improved, and the efficiency of frequency use and the capacity increase can be achieved.

(Embodiment 10) FIG.10 is a block diagram showing a wireless modulation / demodulation system for high-speed transmission according to Embodiment 10 of the present invention. 10, a serial / parallel converter 2, a Walsh sequence generator 3, a selector 4, a phase selector 6, an adder 7, a transmitter 8, a transmitter antenna 9a, a receiver antenna 9b, a receiver 10, a pseudo noise sequence synchronizer 1
1, subtractors 13 and 14, phase detector 15, despreader 1
6, the Walsh sequence extraction determination unit 17, data determination unit 18, synchronization control unit 19, and parallel-serial conversion unit 20 are the same as those in FIG. 1
K is a transmitting device, 21K is a receiving device, 36 is a transmitting M-sequence generating unit, and 37 is a receiving M-sequence generating unit that generates r1 M sequences for reference.

The operation of the wireless modulation / demodulation system for high-speed transmission configured as described above will be described below.

In transmitting apparatus 1K, transmission data td is converted into parallel data by serial / parallel converter 2 in order to reduce the modulation speed. Then, according to the state of the converted output, r1 is selected from M Walsh sequences prepared by the Walsh sequence generating unit 3 by the selector 4 (in this case, r1 ranges from 0 to M according to the state of the parallel conversion output). Are selected) and the sequence length is
The initial phases of r M-sequences longer than the Walsh-sequence and output from the transmission-system M-sequence generator 36 are selected according to the state of the converted output. Then, this is added to the above r1 Walsh sequences by the adder 7, and the output is placed on a high-frequency carrier by the transmitting unit 8 and transmitted from the transmitting antenna 9a to the air.

In receiving apparatus 21K, the incoming signal is received by receiving antenna 9b, and receiving section 10 converts the high-frequency signal received by receiving antenna 9b into a baseband signal. From this output, the pseudo noise sequence synchronization unit 1
In 1, the timing of r M sequences in the baseband signal is extracted, and the same reference M sequence as the M sequence is extracted at the same timing as the r M sequences in the baseband signal based on the extracted timing. The M-sequence component is generated by the receiving M-sequence generator 37 and subtracted from the baseband signal by the subtractor 13 and the subtractor 14, thereby removing the M-sequence component from the baseband signal. With respect to the output of the subtracter, the phase detector 15 first extracts the initial phases of the r M sequences selected by the transmitter 1K, and the despreader 16 outputs the same M Walsh sequences as the transmitter 1K. Are used as reference sequences, and M kinds of despreading are performed. The Walsh sequence extraction determination unit 17 identifies r1 despread outputs, and extracts r1 Walsh sequences selected by the transmitting apparatus 1K. Then, based on the extraction result of the phase detection unit 15 together with the extraction result, the data determination unit 18 determines the transmission data sequence transmitted by the transmission device 1K. Then, based on the timing extracted by the synchronization control unit 19 from the output of the despreading unit 16, the transmission data sequence is serially converted by the parallel-serial conversion unit 20 and output as demodulated data rd.

In this case, the ratio R of the transmission data rate to the modulation speed is calculated by (Equation 1). From (Equation 1), the ratio R is 1 while the spread spectrum method is used.
It can be seen that the above values can be taken, and that M increases as M increases. That is, more information can be transmitted in a narrower frequency band, and the efficiency of frequency use and the capacity can be further increased. Further, as the Walsh sequence length increases, the Walsh sequence extraction determination unit 17 wants to extract a threshold for identifying r1 large despread outputs from among the despread outputs for each reference sequence. The r1 despread output levels are higher. In other words, the demodulation accuracy for C / N is further improved.

As described above, according to the present embodiment, Wals
The transmission system M-sequence generation section 36 for generating r M-sequences having a sequence length longer than the h-sequence length is provided in the transmission apparatus 1K, and the reception M-sequence generation section 37 is provided in the reception apparatus 21K. Since the symbol rate can be reduced by the number of Walsh sequences, r1 Walsh sequences can be extracted from each despread output of each of the M Walsh sequences, symbols can be reproduced, and data can be demodulated. The larger the amount of information per symbol is, the more the demodulation accuracy for C / N is improved, and the more efficient use of frequency and larger capacity are possible.

(Embodiment 11) FIG.11 is a block diagram showing a high-speed transmission wireless modulation / demodulation system according to Embodiment 11 of the present invention. 11, a serial / parallel conversion unit 2, a Walsh sequence generation unit 3, a selector 4, a transmission unit 8, a transmission antenna 9a, a reception antenna 9b, a reception unit 10, a despreading unit 16, a Walsh sequence extraction determination unit 17, a data The determination unit 18, the synchronization control unit 19, and the parallel-serial conversion unit 20 are the same as those in FIG. 1L is a transmitting device, and 21L is a receiving device.

The operation of the high-speed transmission wireless modulation / demodulation system configured as described above will be described below.

In the transmitting apparatus 1L, the transmission data td is converted into parallel data by the serial / parallel converter 2 in order to reduce the modulation speed. Then, according to the state of the converted output, r1 is selected from M Walsh sequences prepared by the Walsh sequence generating unit 3 by the selector 4 (in this case, r1 ranges from 0 to M according to the state of the parallel conversion output). Are selected), the output of which is placed on a high-frequency carrier by the transmitting unit 8 and transmitted from the transmitting antenna 9a to the air.

In the receiving apparatus 21L, the incoming signal is received by the receiving antenna 9b, and the high frequency signal received by the receiving antenna 9b is converted into a baseband signal in the receiving section 10. The output is subjected to M despreading operations in the despreading unit 16 using the same M Walsh sequences as in the transmission system as reference sequences. And the output is Wals
By identifying r1 despread outputs by the h-sequence extraction determining unit 17, r1 Walsh sequences selected in the transmission system are extracted. Then, based on the extraction result, the data determination unit 18 determines the transmission data sequence transmitted by the transmission system. Then, based on the timing extracted by the synchronization control unit 19 from the output of the despreading unit 16, the transmission data sequence is serially converted by the parallel-serial conversion unit 20 and output as demodulated data rd.

In this case, the ratio R of the transmission data rate to the modulation speed is calculated by (Equation 1). From (Equation 1), the ratio R is 1 while the spread spectrum method is used.
It can be seen that the above values can be taken, and that M increases as M increases. That is, more information can be transmitted in a narrower frequency band, and the efficiency of frequency use and the capacity can be further increased. Further, as the Walsh sequence length increases, the Walsh sequence extraction determination unit 17 wants to extract a threshold for identifying r1 large despread outputs from among the despread outputs for each reference sequence. The r1 despread output levels are higher. In other words, the demodulation accuracy for C / N is further improved.

As described above, according to the present embodiment, with a simple configuration, the symbol rate can be reduced for a plurality of M Walsh sequences, and r1 signals are obtained from each despread output of each of the M Walsh sequences. Since a Walsh sequence can be extracted, symbols can be reproduced, and data can be demodulated, the demodulation accuracy for C / N is improved with a simple configuration as the information amount per symbol becomes larger. Thus, it is possible to increase the efficiency of frequency use and increase the capacity.

[0090]

As described above, according to the first aspect of the present invention, there is provided a wireless modulation / demodulation system for high-speed transmission comprising a transmission device and a reception device, wherein the transmission device converts transmission data from serial to parallel. A serial-to-parallel conversion unit for conversion, a Walsh sequence generation unit for generating M Walsh sequences, and r1 (0 ≦ r1 ≦ M) of the M Walsh sequences according to a combination of serial-parallel-converted transmission data Selectors for selecting r1 sequences and polarities in correspondence with the above sequences, a transmission M-sequence generator for generating r M sequences to be transmitted in parallel with the Walsh sequence, and initial phases of the r M sequences. A phase selector for selecting a specific phase determined according to a combination of transmission data, an adder for transmitting in parallel the r M sequences whose initial phase is selected together with the Walsh sequence selected by the selector, A transmitting unit that transmits the output of the arithmetic unit on a high-frequency carrier, and a transmitting antenna that transmits the output signal of the transmitting unit to the air; a receiving device that receives an incoming signal; A receiving unit that converts a high-frequency signal received by the side antenna into a baseband signal, a pseudo-noise sequence synchronization unit that extracts timing of r M sequences in the baseband signal, and a timing extraction in the pseudo-noise sequence synchronization unit. Based on r M
A receiving M-sequence generator for generating the same M sequences as the r M-sequences at the same timing as the sequences, a subtractor for removing the r M-sequences from the baseband signal, and the same as the transmitting side A despreading unit that uses M Walsh sequences as reference sequences and despreads the output signal of the subtractor in parallel with the M reference sequences, respectively, and an initial phase of r M sequences from the output signal of the subtractor. Based on the magnitude of the despread output for each reference sequence in the output signal of the despreader,
A Walsh sequence extraction determination unit that extracts r1 Walsh sequences selected from the M Walsh sequences, a synchronization control unit that performs synchronization control by extracting clock timing from an output signal of the despreading unit, and a Walsh sequence extraction determination A data judging unit for judging a data sequence from the output signal of the unit and the output signal of the phase detecting unit, and a parallel-serial converting unit for serially converting the output data of the data judging unit. The symbol rate can be reduced and M
R1 Wals from each despread output by each Walsh sequence
Since h sequences can be extracted, symbols can be reproduced, and data can be demodulated, as the amount of information per symbol becomes larger, the demodulation accuracy for C / N is improved and the efficiency of frequency utilization is improved. The advantageous effect that the capacity and capacity can be increased is obtained.

According to a second aspect of the present invention, there is provided a high-speed transmission wireless modulation / demodulation system including a transmission device and a reception device, wherein the transmission device includes a serial-parallel conversion unit that converts transmission data from serial to parallel. Corresponds to r1 (0 ≦ r1 ≦ M) sequences in the M square residue sequences according to the combination of the serial-parallel-converted transmission data and the square residue sequence generator that generates M square residue sequences. A selector for selecting the r1 sequences and the polarity, a transmitting M-sequence generating unit for generating r M-sequences to be transmitted in parallel with the quadratic residue sequence, and a transmission data generator for the initial phases of the r M-sequences. A phase selector for selecting a specific phase determined according to the combination, and an adder for transmitting in parallel the r M-sequences whose initial phase has been selected together with the quadratic residue sequence selected by the selector A transmitting unit that transmits the output of the adder on a high-frequency carrier, and a transmitting antenna that transmits the output signal of the transmitting unit to the air, the receiving device receives a arriving signal, A receiving unit that converts a high-frequency signal received by a receiving antenna into a baseband signal, a pseudo-noise sequence synchronization unit that extracts the timing of r M sequences in the baseband signal, and a timing extraction in the pseudo-noise sequence synchronization unit A receiving M-sequence generator for generating the same M sequences as the r M sequences at the same timing as the r M sequences based on the
A subtractor for removing the M sequences and a demultiplexer for performing despreading on the output signal of the subtractor in parallel with the M reference sequences for the output signals of the subtracters, using the same M residue squares as the reference sequence. A spreading unit, a phase detecting unit for detecting an initial phase of r M sequences from the output signal of the subtractor, and a M number of M sequences based on the magnitude of the despread output for each reference sequence in the output signal of the despreading unit. A quadratic residue series extraction determining unit that extracts r1 square residue sequences selected from the square residue sequence, a synchronization control unit that extracts a clock timing from an output signal of the despreading unit and performs synchronization control, By providing a data determination unit that determines a data sequence from the output signal of the extraction determination unit and the output signal of the phase detection unit, and a parallel-serial conversion unit that converts the output data of the data determination unit into serial data, a plurality of M squares can be obtained. In the remainder series Nborureto can be lowered,
Since r1 square residue sequences can be extracted from each despread output of each of the M square residue sequences, symbols can be reproduced, and data can be demodulated, the amount of information per symbol becomes larger. As a result, the demodulation accuracy with respect to C / N is further improved, and an advantageous effect that efficiency of frequency utilization and increase in capacity can be obtained is obtained.

According to a third aspect of the present invention, there is provided a high-speed transmission wireless modulation / demodulation system including a transmission device and a reception device, wherein the transmission device includes a serial-parallel conversion unit that converts transmission data from serial to parallel. , An M-sequence generator for generating M M-sequences, and M-sequences in the M M-sequences according to a combination of serial-parallel-converted transmission data.
a selector for selecting r1 (0 ≦ r1 ≦ M) sequences and selecting the r1 sequences and the polarity; a transmission M-sequence generator for generating r M sequences to be transmitted in parallel with the M sequence; r M
A phase selector for selecting a specific phase determined according to a combination of transmission data with respect to the initial phase of the sequence, and r parallel M-sequences whose initial phase is selected together with the M sequence selected by the selector. An adder, a transmitting unit that transmits an output of the adder on a high-frequency carrier, and a transmitting antenna that transmits an output signal of the transmitting unit to the air, and a receiving device that receives an incoming signal. An antenna, a receiving unit that converts a high-frequency signal received by a receiving antenna into a baseband signal, a pseudo-noise sequence synchronization unit that extracts the timing of r M sequences in the baseband signal, and a pseudo-noise sequence synchronization unit. A receiving M-sequence generation unit that generates the same M sequences as the r M sequences at the same timing as the r M sequences based on the timing extraction;
A subtractor for removing r M sequences from the baseband signal, and the same M M sequences as those on the transmitting side are used as reference sequences, and the output signals of the subtractor are each processed in parallel with M reference sequences. A despreading unit that performs despreading, a phase detection unit that detects the initial phases of the r M sequences from the output signal of the subtractor, and a despread output for each reference sequence in the output signal of the despreading unit. An M-sequence extraction determination unit that extracts r1 M-sequences selected from the M M-sequences based on the M-sequence, a synchronization control unit that extracts a clock timing from an output signal of the despreading unit and performs synchronization control, By having a data determination unit that determines a data sequence from the output signal of the sequence extraction determination unit and the output signal of the phase detection unit, and a parallel-serial conversion unit that converts the output data of the data determination unit to serial, a plurality of M Symbol sequence in M sequence Can be reduced, r1 M-sequences can be extracted from each despread output of each of the M M-sequences, symbols can be reproduced, and data can be demodulated. Is larger, the demodulation accuracy with respect to C / N is further improved, and the advantageous effect that the efficiency of frequency use and the capacity increase can be obtained.

According to the invention set forth in claim 4, according to claim 3,
In the invention described in the above, from the despread output for each reference sequence in the output signal of the despreading unit, comprising a cross-correlation compensation unit that compensates for the cross-correlation component between r1 M sequences, and R1 M selected from M M sequences based on the magnitude of the despread output for each reference sequence in the signal
An M-sequence extraction determination unit that extracts r1 M-sequences selected from the M M-sequences based on the output signal of the cross-correlation compensation unit, instead of the M-sequence extraction determination unit that extracts the sequence , The symbol rate can be reduced with a plurality of M M sequences, the cross-correlation component between each of the M M sequences is compensated for each despread output by each of the M M sequences, and r1 Can extract M symbols and reproduce symbols, can extract r1 M sequences from each despread output of a plurality of M M sequences, can reproduce symbols, and demodulates data. Therefore, the greater the amount of information per symbol is, the more the demodulation accuracy for C / N is improved, and the advantageous effect that the efficiency of frequency use and the capacity increase can be obtained.

According to the fifth aspect of the present invention, there is provided a high-speed transmission wireless modulation / demodulation system including a transmission device and a reception device, wherein the transmission device includes a serial-parallel conversion unit that converts transmission data from serial to parallel. , M Walsh
A Walsh sequence generator for generating a sequence, and M Wa
r1 (0 ≦ r1 ≦ M) sequences in the lsh sequence
Selector for selecting the number of sequences and the polarity, a transmission system Gold sequence generation unit for generating r Gold sequences to be transmitted in parallel with the Walsh sequence, and an initial phase of the r Gold sequences according to a combination of transmission data. A phase selector for selecting a predetermined specific phase, an adder for transmitting r Gold sequences of which initial phase is selected together with the Walsh sequence selected by the selector, and an output of the adder for a high-frequency carrier wave And a transmitting antenna for transmitting the output signal of the transmitting unit to the air, the receiving device receives the incoming signal, and receives the high-frequency signal received by the receiving antenna. A receiving unit for converting to a baseband signal,
A pseudo-noise sequence synchronizer for extracting the timing of r Gold sequences in the baseband signal, and r Gold sequences at the same timing as the r Gold sequences based on the timing extraction in the pseudo-noise sequence synchronizer A receiving system Gold sequence generation unit for generating the same Gold sequence, a subtractor for removing r Gold sequences from the baseband signal, and a M Walsh sequence identical to the transmitting side as a reference sequence, and a subtractor A despreading unit that performs despreading on the output signals of M in parallel with M reference sequences, a phase detection unit that detects the initial phase of r Gold sequences from the output signal of the subtractor, and a despreading unit. A Walsh sequence extraction determining unit that extracts r1 Walsh sequences selected from the M Walsh sequences based on the magnitude of the despread output for each reference sequence in the output signal, and a clock from the output signal of the despreading unit. Extract the timing A synchronization control unit that performs synchronization control; a data determination unit that determines a data sequence from an output signal of the Walsh sequence extraction determination unit and an output signal of the phase detection unit; and a parallel-to-serial conversion unit that serially converts output data of the data determination unit. And a plurality of M
Symbol rate can be reduced by Walsh sequences,
R1 Wa from each despread output from each of the M Walsh sequences
Since an lsh sequence can be extracted, symbols can be reproduced, and data can be demodulated, as the information amount per symbol becomes larger, the demodulation accuracy for C / N is more improved, and the efficiency of frequency utilization is improved. The advantageous effect that the capacity and capacity can be increased is obtained.

According to the sixth aspect of the present invention, there is provided a high-speed transmission wireless modulation / demodulation system including a transmission device and a reception device, wherein the transmission device converts a transmission data from serial to parallel. And M Gold
A Gold sequence generation unit for generating a sequence and M Golds according to a combination of transmission data subjected to serial / parallel conversion.
A selector for selecting r1 sequences and a polarity by associating r1 (0 ≦ r1 ≦ M) sequences in the sequence, and a transmission system M-sequence generation for generating r M sequences to be transmitted in parallel with the Gold sequence Part, a phase selector for selecting a specific phase determined according to a combination of transmission data with respect to the initial phases of the r M sequences, and r M phases whose initial phases are selected together with the Gold sequence selected by the selector. An adder for transmitting the sequence in parallel, a transmitting unit that transmits the output of the adder on a high-frequency carrier, and a transmitting antenna that transmits an output signal of the transmitting unit to the air, the receiving device includes: A receiving antenna that receives an incoming signal, a receiving unit that converts a high-frequency signal received by the receiving antenna into a baseband signal, and a pseudo-noise sequence synchronization unit that extracts the timing of r M sequences in the baseband signal , Pseudo noise system r at the same timing as the r M-sequence based on the extraction of the timing in the synchronization unit
Refer to the receiving system M-sequence generator for generating the same M sequence as the M sequences, a subtracter for removing r M sequences from the baseband signal, and the same M Gold sequences as the transmitting side A despreading unit that performs despreading on the output signal of the subtractor in parallel with M reference sequences, and a phase detection unit that detects initial phases of r M sequences from the output signal of the subtractor. A Gold sequence extraction determination unit that extracts r1 Gold sequences selected from the M Gold sequences based on the magnitude of the despread output for each reference sequence in the output signal of the despreading unit;
A synchronization control unit that extracts a clock timing from an output signal of a despreading unit and performs synchronization control; a data determination unit that determines a data sequence from an output signal of a Walsh sequence extraction determination unit and an output signal of a phase detection unit; And a parallel-to-serial conversion unit that converts the output data of the unit into serial, the symbol rate can be reduced with a plurality of M Gold sequences, and r1 Gold is decompressed from each despread output by each of the M Gold sequences. Since a sequence can be extracted, symbols can be reproduced, and data can be demodulated, as the information amount per symbol becomes larger, the demodulation accuracy for C / N is further improved, and the efficiency of frequency use is improved. And a large capacity can be obtained.

According to the invention of claim 7, according to claim 6,
In the invention described in the above, a cross-correlation compensator for compensating a cross-correlation component between r1 M sequences from a despread output for each reference sequence in an output signal of the despreader, and an output of the despreader R1 selected from M Gold sequences based on the magnitude of the despread output for each reference sequence in the signal
A Gold sequence extraction determination unit that extracts r1 Gold sequences selected from M Gold sequences based on the output signal of the cross-correlation compensation unit, instead of the Gold sequence extraction determination unit that extracts the Gold sequence By this means, the symbol rate can be reduced for a plurality of M Gold sequences, and the cross-correlation component between each of the M Gold sequences is compensated for each despread output by each of the M Gold sequences. r1 Gold sequences can be extracted and symbols can be reproduced, r1 M sequences can be extracted from each despread output by a plurality of M M sequences, symbols can be reproduced, and data can be demodulated. Therefore, the greater the amount of information per symbol is, the more the demodulation accuracy for C / N is improved, and the advantageous effect that the efficiency of frequency use and the capacity increase can be obtained.

According to the invention as set forth in claim 8, according to claim 1,
In the invention described in the above, in place of the transmitting section for transmitting the output of the adder on a high-frequency carrier, the output of the adder is T-phase PSK-modulated, and the T-phase P for transmitting on the high-frequency carrier is transmitted.
An SK modulation unit is provided, which converts a high-frequency signal received by a receiving antenna into a baseband signal instead of a receiving unit that converts a high-frequency signal received by a receiving antenna into a baseband signal, and performs T-phase PSK demodulation. With the provision of the phase PSK demodulation unit, the symbol rate can be reduced with a plurality of M Walsh sequences, and after each T-phase PSK demodulation, each of the M Walsh sequences is demodulated.
Since r1 Walsh sequences can be extracted from each despread output by the h sequence, symbols can be reproduced, and data can be demodulated, the larger the amount of information per symbol, the greater the C / N An advantageous effect is obtained in that the demodulation accuracy is further improved, and the efficiency of frequency use and the capacity can be increased.

According to the ninth aspect of the present invention, the first aspect is provided.
In the invention described in the above, the output of the adder is TSK-modulated by T-value FSK, and the output of the adder is transmitted by T-value FSK modulation on the high-frequency carrier wave, instead of the transmitting unit transmitting the output on the high-frequency carrier wave.
An SK modulation unit is provided, which converts a high-frequency signal received by a receiving antenna into a baseband signal instead of a receiving unit that converts a high-frequency signal received by a receiving antenna into a baseband signal, and performs T-value FSD demodulation. With the provision of the value FSK demodulation unit, the symbol rate can be reduced with a plurality of M Walsh sequences, and after the T-value FSK demodulation, each of the M Walsh sequences is demodulated.
Since r1 Walsh sequences can be extracted from each despread output by the h sequence, symbols can be reproduced, and data can be demodulated, the larger the amount of information per symbol, the greater the C / N An advantageous effect is obtained in that the demodulation accuracy is further improved, and the efficiency of frequency use and the capacity can be increased.

According to the tenth aspect of the present invention, in the first aspect of the present invention, a Walsh sequence is replaced with a Walsh sequence instead of the transmitting M sequence generating unit for generating r M sequences transmitted in parallel with the Walsh sequence. And a transmission system M-sequence generator that generates r M-sequences having a sequence length longer than the Walsh sequence length is provided, so that the symbol rate can be reduced for a plurality of M Walsh sequences. Since r1 Walsh sequences can be extracted from each despread output of each of the Walsh sequences, symbols can be reproduced, and data can be demodulated, the larger the amount of information per symbol, the higher the C value. The demodulation accuracy for / N is further improved, and the advantageous effect that the efficiency of frequency use and the capacity increase can be obtained.

According to an eleventh aspect of the present invention, there is provided a high-speed transmission wireless modulation / demodulation system including a transmission device and a reception device, wherein the transmission device includes a serial-parallel conversion unit that converts transmission data from serial to parallel. , M Wals
h-sequence generating section and M-serial-parallel-converted transmission data
Corresponding r1 (0 ≦ r1 ≦ M) sequences in Walsh sequence
r1 a selector for selecting a sequence and a polarity, a transmitting unit for transmitting the output of the selector on a high-frequency carrier, and a transmitting antenna for transmitting an output signal of the transmitting unit to the air,
The receiving apparatus includes a receiving antenna that receives an incoming signal, a receiving unit that converts a high-frequency signal received by the receiving antenna into a baseband signal, and M Walsh sequences that are the same as the transmitting side as reference sequences. A despreading unit that performs despreading on the output signal in parallel with M reference sequences, respectively, and M Walsh sequences based on the magnitude of the despread output for each reference sequence in the output signal of the despreading unit. R1 selected from
A Walsh sequence extraction judging unit that extracts the Walsh sequence, a synchronization control unit that extracts the clock timing from the output signal of the despreading unit and performs synchronization control, and a data judgment that judges the data sequence from the output signal of the Walsh sequence extraction judging unit Unit and a parallel-serial conversion unit that converts output data of the data determination unit into serial data, so that the symbol rate can be reduced with a plurality of M Walsh sequences, and each of the M Walsh sequences can be reduced.
Since r1 Walsh sequences can be extracted from each despread output of the sequence, symbols can be reproduced, and data can be demodulated with a simple configuration, the larger the amount of information per symbol, the larger the C value. The demodulation accuracy for / N is further improved, and the advantageous effect that the efficiency of frequency use and the increase in capacity can be achieved with a simple configuration is obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a wireless modulation / demodulation system for high-speed transmission according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a wireless modem system for high-speed transmission according to a second embodiment of the present invention;

FIG. 3 is a block diagram showing a high-speed transmission wireless modulation / demodulation system according to a third embodiment of the present invention;

FIG. 4 is a block diagram showing a high-speed transmission wireless modulation / demodulation system according to a fourth embodiment of the present invention;

FIG. 5 is a block diagram showing a wireless modulation / demodulation system for high-speed transmission according to a fifth embodiment of the present invention.

FIG. 6 is a block diagram showing a wireless modulation / demodulation system for high-speed transmission according to a sixth embodiment of the present invention.

FIG. 7 is a block diagram showing a wireless modulation / demodulation system for high-speed transmission according to a seventh embodiment of the present invention.

FIG. 8 is a block diagram showing a wireless modem system for high-speed transmission according to an eighth embodiment of the present invention.

FIG. 9 is a block diagram showing a high-speed transmission wireless modulation / demodulation system according to a ninth embodiment of the present invention.

FIG. 10 is a block diagram showing a wireless modulation / demodulation system for high-speed transmission according to a tenth embodiment of the present invention.

FIG. 11 is a block diagram showing a wireless modulation / demodulation system for high-speed transmission according to Embodiment 11 of the present invention.

FIG. 12 is a block diagram showing a conventional wireless modulation / demodulation system for high-speed transmission.

[Explanation of symbols]

 1A to 1L Transmitter 2 Serial-to-parallel converter 3 Walsh sequence generator 4 Selector 5, 36 M-sequence generator for transmission system 6 Phase selector 7 Adder 8 Transmitter 9a Transmitter antenna 9b Receiving antenna 10 Receiver 11 Pseudo noise sequence Synchronizing sections 12, 37 Receiving system M-sequence generating section 13, 14 Subtractor 15 Phase detecting section 16 Despreading section 17 Walsh sequence extraction determining section 18 Data determining section 19 Synchronizing control section 20 Parallel / serial converting sections 21A to 21L Receiving device 22 square Remainder sequence generation unit 23 Square residue sequence extraction determination unit 24 M sequence generation unit 25 M sequence extraction determination unit 26, 31 Cross-correlation compensation unit 27 Transmission Gold sequence generation unit 28 Receiving Gold sequence generator 29 Gold sequence generation unit 30 Gold Sequence extraction determination unit 32 T-phase PSK modulation unit 33 T-phase PSK demodulation unit 34 T-value FSK modulation unit 35 T-value FSK demodulation unit

Claims (11)

[Claims] 1. A wireless modulation / demodulation system for high-speed transmission comprising a transmitting device and a receiving device, wherein the transmitting device generates a serial number of Walsh sequences and a serial-to-parallel converter for converting transmission data from serial to parallel. A Walsh sequence generating unit to be associated with the r1 (0 ≦ r1 ≦ M) sequences in the M Walsh sequences in accordance with a combination of the serial-parallel-converted transmission data, and the r1 sequences and the polarity. And a selector for selecting Wa.
a transmission-system M-sequence generation unit for generating r M-sequences transmitted in parallel with the lsh sequence, and a phase for selecting a specific phase determined according to a combination of transmission data with respect to an initial phase of the r M-sequences A selector, an adder for transmitting the r M sequences whose initial phase has been selected together with the Walsh sequence selected by the selector in parallel, and a transmission for transmitting an output of the adder on a high-frequency carrier wave And a transmitting antenna for transmitting an output signal of the transmitting unit to the air, wherein the receiving device receives a arriving signal, and transmits a high-frequency signal received by the receiving antenna to a baseband signal. A pseudo-noise sequence synchronization unit that extracts the timing of the r M sequences in the baseband signal; and a timing extraction unit that extracts the timing in the pseudo-noise sequence synchronization unit. A receiving M-sequence generator for generating the same M sequence as the r M sequences at the same timing as the r M sequences based on the received M sequence, removing the r M sequences from the baseband signal A despreader for performing the despreading in parallel with the M reference sequences using the same M Walsh sequences as the transmission side as the reference sequence, and the output signal of the subtractor, A phase detector for detecting an initial phase of the r M sequences from the output signal of the subtractor, and the M number of M sequences based on the magnitude of the despread output for each reference sequence in the output signal of the despreader. A Walsh sequence extraction / determination unit for extracting r1 Walsh sequences selected from the Walsh sequence, a synchronization control unit for extracting clock timing from the output signal of the despreading unit and performing synchronization control, and a Walsh sequence extraction / determination unit Output signal and the output of the phase detector A wireless modulation / demodulation system for high-speed transmission, comprising: a data determination unit that determines a data sequence from a signal; and a parallel-serial conversion unit that converts output data of the data determination unit into serial data. 2. A wireless modulation / demodulation system for high-speed transmission comprising a transmission device and a reception device, wherein the transmission device converts a serial-parallel conversion unit of transmission data from serial to parallel, and converts M pieces of square-residue sequences. The r1 (0 ≦ r1 ≦ M) sequences in the M-square residue sequences corresponding to the combination of the square-residue sequence generator to be generated and the serial-parallel-converted transmission data, and the r1 sequences And a selector for selecting a polarity, a transmitting M-sequence generating unit for generating r M-sequences to be transmitted in parallel with the quadratic residue sequence, and an initial phase of the r M-sequences according to a combination of transmission data. A phase selector for selecting a determined specific phase, and an addition for transmitting in parallel the r M sequences from which the initial phase has been selected, together with the square residue sequence selected by the selector. , A transmitting unit that transmits the output of the adder on a high-frequency carrier, and a transmitting antenna that transmits an output signal of the transmitting unit to the air, wherein the receiving device receives an incoming signal. A receiving antenna, a receiving unit that converts a high-frequency signal received by the receiving antenna into a baseband signal, a pseudo-noise sequence synchronization unit that extracts the timing of the r M sequences in the baseband signal, A receiving-system M-sequence generating unit that generates the same M sequence as the r M sequences at the same timing as the r M sequences based on the timing extraction in the pseudo-noise sequence synchronization unit; And a subtracter for removing the r M sequences from the reference signal, and the same M residue modulo sequences as those on the transmitting side are used as reference sequences, and the output signals of the subtractor are parallelized with the M reference sequences, respectively. A de-spreading unit for de-spreading the signal;
And a phase detector for detecting an initial phase of the M M-sequences, and r1 selected from the M MSMs based on the magnitude of the despread output for each reference sequence in the output signal of the despreader. A quadratic residue series extraction determination unit that extracts the number of square residue sequences, a synchronization control unit that performs synchronization control by extracting clock timing from the output signal of the despreading unit, and an output signal of the square residue sequence extraction determination unit. A wireless modulation / demodulation system for high-speed transmission, comprising: a data determination unit that determines a data sequence from an output signal of the phase detection unit; and a parallel-serial conversion unit that converts output data of the data determination unit into serial data. 3. A wireless modulation / demodulation system for high-speed transmission comprising a transmission device and a reception device, wherein the transmission device generates a serial-parallel converter for converting transmission data from serial to parallel, and generates M M-sequences. An M-sequence generating unit that causes r1 (0 ≦ r1 ≦ M) of the M M-sequences to correspond to each other in accordance with a combination of the serial-parallel-converted transmission data and the r1 sequences and polarity Selector, a transmitting M-sequence generator for generating r M-sequences to be transmitted in parallel with the M-sequence, and an initial phase of the r M-sequences determined according to a combination of transmission data. A phase selector for selecting a specific phase, an adder for transmitting the r M sequences whose initial phase is selected in parallel with the M sequence selected by the selector, and an output of the adder. A transmitting unit that transmits on a carrier wave of a frequency, and a transmitting antenna that transmits an output signal of the transmitting unit to the air, wherein the receiving device includes a receiving antenna that receives an incoming signal, and the receiving antenna. A receiving unit that converts a high-frequency signal received in step (b) into a baseband signal, a pseudo-noise sequence synchronization unit that extracts the timing of the r M sequences in the baseband signal, and a timing extraction in the pseudo-noise sequence synchronization unit A receiving M-sequence generating unit that generates the same M sequence as the r M sequences at the same timing as the r M sequences based on the M-sequence, and removes the r M sequences from the baseband signal And a despreading unit that performs despreading on the output signals of the subtractor in parallel with the M reference sequences, respectively, Previous A phase detector for detecting an initial phase of the r M sequences from the output signal of the subtractor, and the M number of M sequences based on the magnitude of the despread output for each reference sequence in the output signal of the despreader. R1 selected from the M series
An M-sequence extraction judging unit for extracting the M-sequences, a synchronization control unit for extracting the clock timing from the output signal of the despreading unit and performing synchronization control, an output signal of the M-sequence extraction judging unit and the phase detection A high-speed transmission wireless modulation / demodulation system, comprising: a data determination unit that determines a data sequence from an output signal of the unit; and a parallel-serial conversion unit that converts output data of the data determination unit into serial data. 4. A cross-correlation compensator for compensating a cross-correlation component between the r1 M sequences from a despread output for each reference sequence in an output signal of the despreader, and R1 selected from the M M sequences based on the magnitude of the despread output for each reference sequence in the output signal
M-sequence extraction determination unit that extracts r1 M-sequences selected from the M M-sequences based on the output signal of the cross-correlation compensation unit instead of the M-sequence extraction determination unit that extracts the M M-sequences The wireless modulation / demodulation system for high-speed transmission according to claim 3, further comprising a unit. 5. A high-speed transmission wireless modulation / demodulation system comprising a transmission device and a reception device, wherein the transmission device generates a serial number of M-Walsh sequences and a serial-parallel conversion unit for converting transmission data from serial to parallel. A Walsh sequence generator to be performed, and r1 (0 ≦ r1 ≦ M) sequences in the M Walsh sequences corresponding to the combination of the serial-parallel-converted transmission data, and the r1 sequences and the polarity. And a selector for selecting Wa.
A transmission system Gold sequence generation unit that generates r Gold sequences to be transmitted in parallel with the lsh sequence, and a phase that selects a specific phase determined according to a combination of transmission data for an initial phase of the r Gold sequences. A selector, an adder for transmitting the r Gold sequences whose initial phase is selected in parallel with the Walsh sequence selected by the selector, and a transmission for transmitting an output of the adder on a high-frequency carrier wave And a transmitting antenna for transmitting an output signal of the transmitting unit to the air, wherein the receiving device receives a arriving signal, and transmits a high-frequency signal received by the receiving antenna to a baseband signal. A pseudo-noise sequence synchronization unit for extracting the timing of the r Gold sequences in the baseband signal, and a timing extraction in the pseudo-noise sequence synchronization unit A receiving system Gold sequence generation unit for generating the same Gold sequence as the r Gold sequences at the same timing as the r Gold sequences based on the r Gold sequences, removing the r Gold sequences from the baseband signal And a subtractor to
A despreading unit that uses the same M Walsh sequences as the transmitting side as reference sequences, and performs despreading on the output signals of the subtractor in parallel with the M reference sequences, respectively, a phase detector for detecting an initial phase of r Gold sequences, and r1 selected from the M Walsh sequences based on the magnitude of the despread output for each reference sequence in the output signal of the despreader. A Walsh sequence extraction judging unit for extracting a number of Walsh sequences, a synchronization control unit for extracting clock timing from an output signal of the despreading unit and performing synchronization control, an output signal of the Walsh sequence extraction judging unit and the phase detection A high-speed transmission wireless modulation / demodulation system, comprising: a data determination unit that determines a data sequence from an output signal of the unit; and a parallel-serial conversion unit that converts output data of the data determination unit into serial data. 6. A high-speed transmission wireless modulation / demodulation system comprising a transmission device and a reception device, wherein the transmission device generates a serial number of serial data from a serial-to-parallel converter, and generates M Gold sequences. A Gold sequence generating section to be transmitted and the M Go
r1 (0 ≦ r1 ≦ M) sequences in the ld sequence are associated with each other,
a selector for selecting r1 sequences and a polarity, a transmission M-sequence generator for generating r M sequences to be transmitted in parallel with the Gold sequence, and a combination of transmission data for the initial phases of the r M sequences A phase selector for selecting a specific phase determined according to
An adder for transmitting the r M sequences in which the initial phase is selected together with the sequence in parallel, a transmitter for transmitting the output of the adder on a high-frequency carrier, and an output signal of the transmitter. A receiving antenna for transmitting an incoming signal; a receiving unit for converting a high-frequency signal received by the receiving antenna into a baseband signal; and the baseband. A pseudo noise sequence synchronizer for extracting the timing of the r M sequences in the signal; and the r M sequences at the same timing as the r M sequences based on the timing extraction in the pseudo noise sequence synchronizer. A receiving M-sequence generator for generating the same M-sequence as the sequence, a subtractor for removing the r M-sequences from the baseband signal, and the M Gold sequences same as the transmitting side. And irradiation sequence, the despreading unit that performs despreading in parallel with said M reference sequences for the output signal of the subtractor, from said output signal of said subtractor r
A phase detector for detecting the initial phase of the M sequences, and r1 selected from the M Gold sequences based on the magnitude of the despread output for each reference sequence in the output signal of the despreader. A Gold sequence extraction determining unit for extracting a Gold sequence, a synchronization control unit for extracting a clock timing from the output signal of the despreading unit and performing synchronization control, an output signal of the Walsh sequence extraction determining unit, and the phase detecting unit. And a parallel-serial conversion unit that converts output data of the data determination unit into serial data. A wireless modulation / demodulation system for high-speed transmission, comprising: 7. A cross-correlation compensator for compensating a cross-correlation component between the r1 M sequences from a de-spread output for each reference sequence in an output signal of the de-spreader; The cross-correlation compensating unit instead of the Gold sequence extraction determining unit that extracts r1 Gold sequences selected from the M Gold sequences based on the magnitude of the despread output for each reference sequence in the output signal of Based on the output signals of the M Go
Gold to extract r1 Gold series selected from ld series
7. The wireless modulation / demodulation system for high-speed transmission according to claim 6, further comprising a sequence extraction determination unit. 8. An output of the adder is replaced with a T-phase P instead of a transmitter for transmitting the output of the adder on a high-frequency carrier.
T-phase PS that performs SK modulation and transmits on a high-frequency carrier
A T-phase PSK demodulator that includes a K modulator and converts a high-frequency signal received by the receiving antenna to a baseband signal instead of a receiving unit that converts a high-frequency signal received by the receiving antenna to a baseband signal. The wireless modulation / demodulation system for high-speed transmission according to claim 1, further comprising a T-phase PSK demodulation unit for performing the transmission. 9. An output of the adder is replaced with a T value F in place of a transmitting section for transmitting the output of the adder on a high-frequency carrier.
T value FS which is SK modulated and transmitted on a high frequency carrier
A K-modulation unit is provided, and instead of a receiving unit that converts a high-frequency signal received by the receiving antenna to a baseband signal, a high-frequency signal received by the receiving antenna is converted to a baseband signal to perform T-value FSD demodulation. The wireless modulation / demodulation system for high-speed transmission according to claim 1, further comprising a T-value FSK demodulation unit for performing the transmission. 10. A transmitting system M-sequence generator for generating r M-sequences to be transmitted in parallel with the Walsh sequence,
The wireless modulation / demodulation system for high-speed transmission according to claim 1, further comprising: a transmission system M-sequence generation unit that transmits r M-sequences having a sequence length longer than the Walsh sequence length and transmitted in parallel with the Walsh sequence length. 11. A wireless modulation / demodulation system for high-speed transmission comprising a transmitting device and a receiving device, wherein the transmitting device generates a serial-to-parallel converter for converting transmission data from serial to parallel, and generates M Walsh sequences. A Walsh sequence generating unit to be associated with the r1 (0 ≦ r1 ≦ M) sequences in the M Walsh sequences in accordance with a combination of the serial-parallel-converted transmission data, and the r1 sequences and the polarity. And a transmitting unit that transmits the output of the selector on a high-frequency carrier wave, and a transmitting antenna that transmits an output signal of the transmitting unit to the air. A receiving antenna for receiving, a receiving unit for converting a high-frequency signal received by the receiving antenna into a baseband signal,
a despreading unit for performing despreading on the output signal of the receiving unit in parallel with the M reference sequences, and a despreading unit for each reference sequence in the output signal of the despreading unit; Based on the magnitude of the output, the M Walsh
Wals to extract r1 Walsh sequences selected from the sequence
h sequence extraction determination unit, a synchronization control unit that performs synchronization control by extracting clock timing from the output signal of the despreading unit, a data determination unit that determines a data sequence from the output signal of the Walsh sequence extraction determination unit, A high-speed transmission wireless modulation / demodulation system, comprising: a parallel-serial conversion unit that converts output data of the data determination unit into serial data.