JP3412935B2 - Device-separated TDMA transmission / reception device having high-speed pilot signal detection unit, device-separated TDMA transmission device, and transmission device - Google Patents

Description

Detailed Description of the Invention

[0001]

[0002]

The present invention relates consists of two devices arranged mutually distant positions in the indoor unit and Yagaiso location of <br/> so, device separation arrangement type having a pilot signal fast detector TDMA transmitter / receiver and TDMA-separated type TDMA
Type transmitting apparatus and transmitting apparatus . In recent years, mobile communication systems and satellite communication systems are increasingly using a method of installing and operating a wireless device outdoors.

Further, the communication system of these systems is TDM.
In many cases, the A (time division multiple access) method is used. In this case, there is a demand for remote control of a wireless device located outdoors in units of transmitted burst signals. Here, remote control of the wireless device means ON / OFF (ON / OFF) of the transmission amplifier.
OFF) control and control for self-diagnosis by returning to the RF (radio frequency) band and the IF (intermediate frequency) band.

In order to simplify the installation, the connection between the outdoor wireless device and the indoor device is made by using a coaxial cable or an optical cable for transmitting the main signal for both transmission and reception, or one transmission and reception. . That is, it does not have a cable connection for control. For this reason, the auxiliary signal for control (pilot signal) is transmitted to the wireless device through the transmission cable. However, in order to control the wireless device for each burst, an instruction from the indoor device is issued within the guard time between bursts. Must be received and the constituent circuits of the wireless device must be operated.

Therefore, a relatively low-speed system such as FM modulation cannot be used as a transmission system of the auxiliary signal, and it is carried out by turning on / off a plurality of carriers (that is, a multi-carrier pilot burst). The carrier is selected to have a frequency sufficiently lower than the intermediate frequency band (IF band). By the way, in order to ensure the control operation of the wireless device, the pilot burst is detected at high speed, and the state of the wireless device is changed to the state in accordance with the command before the main signal burst of interest is input to the wireless device. There is a need to.

Here, it is the detection time of the pilot signal that occupies a high proportion of the time from the input of the pilot burst to the establishment of the state of the wireless device. Therefore, how fast the pilot signal is detected is important. Has become a problem.

[0007]

2. Description of the Related Art FIG. 3 is a block diagram showing a conventional example. As shown in FIG. 3 , this transmitting / receiving apparatus is an indoor unit 100 as a first transmitting / receiving apparatus and a second transmitting / receiving apparatus. The outdoor device 200 is provided separately from the outdoor device (wireless device) 200.
00 is connected via transmission lines 13 and 31 to the indoor unit 100 at a distance. In the outdoor device 200, the indoor device 10
The pilot signal from 0 remotely controls the on / off of the transmission amplifier and the self-diagnosis by the return in the RF band and the IF band.

The indoor unit 100 has a transmitting system and a receiving system. The transmitting system of the indoor unit 100 includes a main signal burst generating section 101 and a pilot signal generating section 10.
2, a synthesizing unit 3 is provided, and a reception signal demodulating unit 104 is provided in the receiving system of the indoor device 100. Further, the outdoor device 200 also has a transmission system and a reception system, and the transmission system of the outdoor device 200 includes a separation unit 15,
Band pass filter 35, return switch 2 for self-diagnosis
4, the transmission high frequency unit 25 is provided, and the outdoor device 20
The receiving system at 0 is provided with a receiving high frequency unit 28 and a self-diagnosis return switching unit 29. Further, the outdoor device 200 is provided with a pilot signal detection unit 201 and a logic control unit 23 as a remote control unit. Further, the outdoor device 200 is provided with a hybrid 26 and a transmitting / receiving antenna 27.

Here, the main signal burst generator 101 in the indoor unit 100 includes a TDMA controller 1 and a modulator 2.
(There may be more than one modulator 2),
By the TDMA control unit 1 and the modulation unit 2, the TD
It is possible to generate a modulated main signal burst according to the MA method. Pilot signal generator 1
Reference numeral 02 denotes a pilot burst signal (auxiliary signal) for remotely controlling the outdoor device 200. For this reason, for example, an oscillator 4-1 that outputs carriers having oscillation frequencies f ₀ , f ₁ , and f ₂ is used. ~ 4-3 and oscillators 4-1 to 4
High frequency switches 7-1 to 7-3 for turning on / off each carrier output from -3, a combiner 10 for synthesizing signals passed through the high frequency switches 7-1 to 7-3, and a high frequency switch 7-
The pilot burst control unit 11 is provided to control ON / OFF of 1 to 7-3 and generate a signal of a pattern according to a member of the outdoor device 200 that is remotely controlled.

The synthesizing unit 3 synthesizes the main signal burst and the pilot burst signal. The reception signal demodulation unit 104 includes a demodulation unit 33 (there may be a plurality of demodulators 33) and a TDMA control unit 34. The demodulation unit 33 and the TDMA control unit 34 perform the TDMA method on the received signal. The modulation processing conforming to is applied.

Further, the separating unit 1 in the outdoor unit 200
5 is for separating the main signal burst and the pilot burst signal from the signal sent from the indoor device 100. The band-pass filter 35 filters only the main signal, and the self-diagnosis folding switch 24 cooperates with the self-diagnosis folding switch 29 to receive the main signal from the transmitting side during the self-diagnosis. It turns back to the side.
In the normal state, the self-diagnosis loopback switching unit 24 is switched so as to send the main signal to the transmission high frequency unit 25 side.

The transmission high frequency section 25 converts the frequency of the main signal burst separated by the separation section 15 and passed through the bandpass filter 35 by the up converter 25-1 and further amplifies by the amplifier (high power amplifier) 25-2. Is. In addition, the transmission high-frequency unit 25 is also used for the pre-stage amplifier 2
5-3 and a band pass filter 25-4.
Further, the reception high-frequency unit 28 performs frequency conversion on the reception signal, and for this purpose, the bandpass filter 28-
1, amplifier (low noise amplifier) 28-2, 28-3,
It has a down converter 28-4.

The self-diagnosis return switch 29 is used for self-diagnosis.
When disconnected, cooperates with self-diagnosis loopback switch 24
Then, the main signal is returned from the transmitting side to the receiving side.
It In the normal state, the self-diagnosis return switching device 29 is
It switches to pass the received signal. Pilot letter
The signal detection unit 201 is the pilot separated by the separation unit 15.
Burst signal (for remote control of the wireless device 200)
Auxiliary signal due to multi-carrier burst)
However, for this purpose, the distributor 16 and the distributor 16
Filter the pilot burst signal (voltage signal) that has been received
The center frequency₀, F ₁, F₂Band passfill
17-1 to 17-3 and bandpass filter 17-1
Power detection of each pilot signal from the output of 17-3
The power detectors 20-1 to 20-3 are provided.

[0014] Logic control unit 23, on-off control and self-control (e.g., amplifier 25-2 in the outdoor unit 200 on the basis of each pilot signal information detected by the pilot signal detecting unit 201 (a total of 3 bits of information) The switching control of the diagnostic return switch 24, 29 is performed.
In FIG. 3 , reference numerals 12 and 30 denote electric / optical converters and 1
Reference numerals 4 and 32 are optical / electrical converters, and these members are provided when an optical cable (optical fiber) is used as the transmission lines 13 and 31 instead of the coaxial cable.

With this structure, the following operation is performed. First, the main signal path will be described. The main signal burst generated by the TDMA control unit 1 and the modulation unit 2 in the indoor device 100 is combined with the pilot burst signal by the combiner 3 and transmitted to the outdoor device 200. Then, the main signal in the IF band input to the outdoor device 200 is
It is sent to the transmission high frequency unit 25 via the distributor 15, the band pass filter 35, and the folding switching unit 24, power-amplified by the transmission amplifier 25-2, and transmitted from the antenna 27 via the hybrid 26.

On the other hand, on the receiving side, the main signal received by the antenna 27 is converted into the IF band by the receiving high-frequency section 28 via the hybrid 26, and is sent to the indoor unit 100 via the self-diagnosis return switch 29. Sent, demodulator 3
3 is demodulated and the baseband signal is demodulated by the TDMA control unit 34.
Is processed in. Next, the operation of the multi-carrier pilot burst will be described.

First, from the oscillators 4-1 to 4-3, the frequency
Is f₀, F₁, F₂Carrier is output and high frequency
Via the switches 7-1 to 7-3
f₀, F ₁, F₂Carriers are synthesized, and further synthesizer 3
Is combined with the main signal and transmitted to the outdoor wireless device 200.
Be done. At this time, the pilot burst control unit 11
Then, according to the control command, the high frequency switches 7-1 to 7-
3 is turned on within the guard time.

[0018] Then, the main signal and the pilot carrier which is transmitted to the outdoors device 200, is branched by the distributor 15. At this time, since the bandpass filter 35 is inserted in one of the main signal paths, only the main signal is transmitted to the transmission high frequency section 25. The other is distributed by the distributor 16, the bandpass filters 17-1 to 17-3 extract the pilot carrier components of the frequencies f ₀ , f ₁ and f ₂ , and the power detectors 20-1 to 20-3. Is detected.

The outputs of the power detectors 20-1 to 20-3 are input to the logic circuit 23, and the logic circuit 23 uses the combination of the frequencies f _{0 to} f ₂ for the wireless device 200.
The control command is determined to control ON / OFF of the transmission amplifier 25-2 and switching control of the loopback switching units 24 and 29. Here, as shown in FIG. 5 , the frequency arrangement of pilot bursts is selected to be a sufficiently low frequency with respect to the IF frequency band.

Further, when showing the time relationship between pilot carriers transmitted / detection operation, it is as shown in FIG. That is, as shown in FIG. 4 , first, the high frequency switches 7-1 to 7-3 are turned on under the control of the pilot burst control unit 11, so that the time (guard time) between the main signal bursts is reduced. A pilot carrier is transmitted to. After that, the pilot carrier passes through the bandpass filters 17-1 to 17-3 in the outdoor device, but at this time, a delay peculiar to the bandpass filter occurs. Then, the power detectors 20-1 to 20-3 detect the pilot carrier power, and the logic control unit 23 determines the presence / absence of the frequencies f _{0 to} f ₂ , and the transmission amplifier 25-2 and the return switching units 24 and 29. To control. The operation up to this point must be performed within the guard time. At this time, the logic control unit 23 continues this control for the time of one main signal burst.

[0021]

However, conventionally, as shown in FIG. 3 , bandpass filters 17-1 to 17-3 are used to extract pilot carriers, and the carrier frequency is an intermediate frequency. Since the frequency is lower than the frequency of the signal (see FIG. 5 ), its delay time is large. For this reason, the time from the transmission of the pilot carrier to the start of control becomes large, and as a result, the operation of the logic control unit 23 must be performed at high speed, or in the worst case, the control of the wireless device is started within the guard time. There is a problem that it can not be done.

The present invention was devised in view of the above problems, and by making it possible to detect a pilot signal at high speed, the pilot signal transmission time from the start of control is shortened. A device-separated TDMA transceiver having a high-speed detector, and
It is an object of the present invention to provide a device-separated type TDMA transmission device and a transmission device .

[0023]

FIG. 1 is a block diagram of the principle of the present invention. In FIG. 1, 100 is a first transmitting / receiving device and 200 is a second transmitting / receiving device. And
The second device 200 for transmission / reception is the first device 10 for transmission / reception.
0 connected via transmission lines 13 and 31, to the first transmission / reception device 100 at a distance, and remotely controlled by a pilot signal from the first transmission / reception device 100. Is.

By the way, the first transmitting / receiving apparatus 100 includes
A main signal burst generation unit 101 that generates a main signal burst modulated by the TDMA method by the TDMA control unit 1 and the modulation unit 2, and a pilot signal generation unit that generates a pilot signal for remotely controlling the transmitting / receiving second device 200. 102 and a synthesizing unit 3 for synthesizing the main signal burst and the pilot signal are provided, and the signal received by the demodulating unit 33 and the TDMA control unit 34 is T
Received signal demodulation unit 1 that performs modulation processing conforming to the DMA system
04 are provided.

In the second transmitting / receiving apparatus 200, a separating section 15 for separating the main signal burst and the pilot signal from the signal sent from the first transmitting / receiving apparatus 100 is separated by this separating section 15. A transmission high frequency unit 25 that frequency-converts a main signal burst and further amplifies it with an amplifier, a reception high-frequency unit 28 that frequency-converts a received signal, and a separation unit 1.
The pilot signal high-speed detecting section 202 for detecting the pilot signals separated by 5 at high speed, and the control in the transmitting / receiving second apparatus 200 based on the pilot signal information detected at high speed by the pilot signal high-speed detecting section 202 a remote control unit 203 that is provided.

Here, the pilot signal high speed detection unit 202
Distributes the pilot signal separated by the separation unit
The distributor and each output of the distributor are in multiples
Multiple frequency multiplier and multiple frequency multiplier
Input from the output from each frequency of the pilot signal
The center frequency is the frequency obtained by multiplying the above
A plurality of corresponding to each frequency of the pilot signal
It is configured with a bandpass filter (above
Is the requirement of claim 1). At this time, the second device for transmission and reception
Wraps the main signal burst from the sender to the receiver.
With a loopback switch, the remote control unit
Switching control of the loopback switching unit based on the frequency information of the No.
May be configured to perform control (claims
2). The pilot signal of the present invention according to claim 3
Device-separated TDMA transmitter having high-speed detection unit
Is the first device for transmission and the transmission line for the first device for transmission.
Connected to the first device for transmission.
A pilot from the first device for transmission, which is arranged at a distance.
A second device for transmission, which is remotely controlled by a remote control signal.
The TDMA control unit and the modulation unit are included in the first transmission device.
To generate the main signal burst modulated by the TDMA method.
Remotely connect the main signal burst generator and the second device for transmission.
A pilot signal that generates a pilot signal for controlling
Signal generator, combining the main signal burst and pilot signal
And a synthesizing unit for transmitting the data to the second device for transmission.
The main signal burst and pie from the signal sent from one device.
Separation part to separate lot signal and separation part
The main signal burst is frequency converted and further amplified by an amplifier.
The high frequency part of the signal and the pilot signal separated by the separation part
Pilot signal for fast detection
Pilot signal information detected at high speed by the signal high-speed detector
Control unit for controlling the inside of the second transmitting device based on
And the pilot signal high-speed detector is installed in the separation unit.
A divider for distributing the more separated pilot signals,
Multiple outputs for each output of the distributor
Output from frequency multiplier and multiple frequency multipliers
Input the frequency of the pilot signal to each of the above
Each of the above-mentioned
Multiple bandpass filters for each frequency of the ilot signal
It is characterized in that it is constructed to include a I filter.
Further, the transmitting device of the present invention according to claim 4 is
In the transmitting device for transmitting the signal.
From the received signal including the main signal and pilot signal.
The distributor for distributing the separated pilot signals, and the distributor
Multiple frequencies to multiply each output by their respective multiples
The output from the frequency multiplier and multiple frequency multipliers.
And multiply each frequency of the pilot signal by each of the above
The pilots whose center frequency is the doubled frequency
Multiple bandpass filters for each frequency of the filtered signal
It is characterized by being configured with.

[0027]

In the device-separated arrangement type TDMA transmission / reception device having the pilot signal high-speed detection section of the present invention described above, as shown in FIG. 1, in the first transmission / reception apparatus 100, the main signal burst generation section 101 performs TDMA control. The main signal burst modulated by the TDMA method by the unit 1 and the modulator 2 is generated, and the pilot signal generator 102 is generated.
Then, a pilot signal is generated. Then, in the synthesis unit 3,
The main signal burst and the pilot signal are combined and sent to the second transmitting / receiving apparatus 200.

In the transmitting / receiving second device 200, the separating unit 15 separates the main signal burst and the pilot signal from the signal sent from the transmitting / receiving first device 100, but the separating unit 15 separates them. The frequency of the main signal burst thus generated is converted by the transmission high frequency unit 25 and further amplified by the amplifier. On the other hand, the signal received by the transmission / reception second device 200 is frequency-converted by the reception high frequency unit 28, and further by the demodulation unit 33 and the TDMA control unit 34 in the reception signal demodulation unit 104 of the transmission / reception first device 100. The received signal is modulated according to the TDMA method.

By the way, the separated pilot signal separating unit 15 Ru detected at high speed by a pilot signal fast detection section 202. That is, in the pilot signal high speed detection unit 202
Is a distributor, which is the pilot signal separated by the separation unit
Is distributed to each output of the distributor by a multiplier at multiple frequencies.
Multiply the force by multiples of each
Input the output from multiple frequency multipliers to the filter,
The output of the bandpass filter is output as the detection signal.
It In this way , the remote control unit 203 controls the second transmission / reception device 200 based on the pilot signal information detected at high speed by the pilot signal high speed detection unit 202.
(Claim 1).

At this time, the main signal burst is switched back and forth.
It is looped back from the sending side to the receiving side with the instrument, and this return switching
The pilot signal high-speed detection section 20 is controlled by a switch.
Based on the frequency information of the pilot signal detected in 2.
It may be performed by a remote control unit (claims)
2). Further, the pilot signal height of the present invention according to claim 3
A device-separated TDMA transmitter having a speed detector
Is the TDMA control unit and the modulation in the first device for transmission.
Main signal verse modulated by TDMA method
Is generated by the main signal burst generator and
The pilot signal for remote control of the credit second device is transmitted.
It is generated by the ilot signal generation unit, and further, by the synthesis unit,
The main signal burst and the pilot signal are combined. That
After that, in the second device for transmission, in the separation unit, for transmission
From the signal sent from the first device, the main signal burst and power
It is separated from the ilot signal, and it is
The separated main signal burst is frequency converted and further amplified
Amplify. On the other hand, the pilot signal separated by the separator is
This pilot signal is detected at high speed by the high-speed pilot signal detector,
Pilot detected at high speed by the Ylot signal high speed detector
Based on the signal information, the remote control unit controls the transmission in the second device.
Control is performed. Here, in the pilot signal high speed detector
When detecting the
The distributed pilot signal and multiple frequency multipliers
Multiply each output of the distributor by each multiple.
Output from multiple frequency multiplier to bypass filter
Input, and the output of each bandpass filter becomes the detection signal.
Used. And for transmission of the invention according to claim 4.
In the equipment, the separation unit separates the main signal and pilot signal.
The pilot signal separated from the received signal containing
Is distributed in multiple frequency multipliers, each of the distributor
The output is multiplied by each multiple and multiple frequencies
The output from the multiplier is input to multiple bandpass filters.
To be done.

[0031]

Embodiments of the present invention will be described below with reference to the drawings.

(A) Description of an Embodiment FIG. 2 is a block diagram showing an embodiment of the present invention. In FIG. 2 as well, the transmitting / receiving apparatus according to this embodiment is the first transmitting / receiving apparatus. The indoor device 100 and the outdoor device (wireless device) 200 as the second device for transmission / reception are provided separately. Then, the outdoor device 200 is
It is connected to the indoor unit 100 via transmission lines 13 and 31, and is arranged at a distance from the indoor unit 100. In the outdoor device 200, a pilot signal from the indoor device 100 is used to remotely control on / off of the transmission amplifier and self-diagnosis by folding back in the RF band and the IF band.

Also in this embodiment, the indoor unit 10
0 has a transmitting system and a receiving system, and the indoor unit 10
In the transmission system of 0, the main signal burst generation unit 101,
A pilot signal generation unit 102 and a combining unit 3 are provided, and a reception system in the indoor device 100 is provided with a reception signal demodulation unit 104. Also, the outdoor device 200,
The outdoor device 200 is provided with a transmission system and a reception system. The outdoor device 200 is provided with a separation unit 15, a bandpass filter 35, a self-diagnosis folding switch 24, and a transmission high-frequency unit 25. In the receiving system, the receiving high frequency unit 28 and the self-diagnosis return switching unit 29 are provided. Further, the outdoor device 200 is provided with a pilot signal high speed detection unit 202 and a logic control unit 23 as a remote control unit. Further, the outdoor device 200 is provided with a hybrid 26 and a transmitting / receiving antenna 27.

Here, the main signal burst generator 101 in the indoor unit 100 has a TDMA controller 1 and a modulator 2.
(There may be more than one modulator 2),
By the TDMA control unit 1 and the modulation unit 2, the TD
It is possible to generate a modulated main signal burst (main signal) by the MA method. Further, the pilot signal generation unit 102 generates a pilot burst signal (auxiliary signal) for remotely controlling the outdoor device 200. For this reason, for example, the oscillation frequencies are f ₀ and f.
Oscillators 4-1 to 4-3 that output ₁ and f ₂ carriers
And a high-frequency switch 7-1 to 7-3 for turning on / off each carrier output from the oscillators 4-1 to 4-3, and a synthesizer 10 for synthesizing signals passed through the high-frequency switches 7-1 to 7-3.
And a pilot burst control unit 11 for controlling ON / OFF of the high frequency switches 7-1 to 7-3 to generate a signal of a pattern according to a member of the outdoor device 200 that is remotely controlled.
It is configured with.

The synthesizer 3 synthesizes the main signal burst and the pilot burst signal. The reception signal demodulation unit 104 includes a demodulation unit 33 (there may be a plurality of demodulators 33) and a TDMA control unit 34. The demodulation unit 33 and the TDMA control unit 34 perform the TDMA method on the received signal. The modulation processing conforming to is applied.

Further, the separating unit 1 in the outdoor unit 200
5 is for separating the main signal burst and the pilot burst signal from the signal sent from the indoor device 100. The band-pass filter 35 filters only the main signal, and the self-diagnosis folding switch 24 cooperates with the self-diagnosis folding switch 29 to receive the main signal from the transmitting side during the self-diagnosis. It turns back to the side.
In the normal state, the self-diagnosis loopback switching unit 24 is switched so as to send the main signal to the transmission high frequency unit 25 side.

The transmission high frequency unit 25 converts the frequency of the main signal burst separated by the separation unit 15 and passed through the band pass filter 35 by the up converter 25-1 and further amplifies by the amplifier (high power amplifier) 25-2. Is. In addition, the transmission high-frequency unit 25 is also used for the pre-amplifier 2
5-3 and a band pass filter 25-4.
Further, the reception high-frequency unit 28 performs frequency conversion on the reception signal, and for this purpose, the bandpass filter 28-
1, amplifier (low noise amplifier) 28-2, 28-3,
It has a down converter 28-4.

The self-diagnosis return switch 29, in cooperation with the self-diagnosis return switch 24, returns the main signal from the transmitting side to the receiving side during the self-diagnosis. In the normal state, the self-diagnosis return switching device 29 is
It switches to pass the received signal.

By the way, the pilot signal high speed detector 20
2 is a distributor (power distributor) 16, for detecting the pilot burst signal separated by the separator 15 at high speed.
Frequency multipliers 42-1 to 42-3, bandpass filters 45-1 to 45-3, power detectors 48-1 to 48-3
It has Here, the divider 16 divides the pilot burst signal separated by the separator 15 into three, and the frequency multiplier 42-i divides the pilot burst signal divided into three by the distributor 16. Frequency is L, M,
It is N times larger. As a result, each frequency multiplier 42-i is configured as a frequency conversion unit that temporarily converts the pilot burst signal separated by the separation unit 15 into a high frequency.

Further, the bandpass filter 45-i sets the center frequencies to f ₀ × L, f ₁ × M and f ₂ × N, respectively, so that the output from each frequency multiplier 42-i is obtained. Among them, the corresponding up-converted pilot burst signal is detected. Further, the power detector 48-i performs power detection on the output of each bandpass filter 45-i.

In this way, the frequency multiplier 42-i (order = L, M, N) is connected to each output of the distributor 16, and the bandpass filter 45-i (center frequency) is connected to each frequency multiplier output. Is connected to L × f ₀ , M × f ₁ , N × f ₂ ), each bandpass filter output is connected to the power detector 48-i, and its output is connected to the logic control unit 23. Each output component of the distributor 16 has a frequency multiplier 42.
-I is L, M, N times multiplied, and the band-pass filter 45-i extracts only the multiplied pilot carrier of interest, and the power detector 48-i performs power detection.

By thus doubling, it is possible to widen the specific band of the bandpass filter 45-i, so that the delay time can be shortened. The logic control unit 23 controls the inside of the outdoor device 200 (for example, the amplifier 25-2) based on each pilot signal information (total 3 bits of information) detected by the pilot signal high speed detection unit 202.
ON / OFF control and self-diagnosis loopback switch 24, 29
Switching control).

Incidentally, also in FIG. 2, the electric / optical converter 1
2, 30 and the optical / electrical converters 14, 32 are provided when the optical cables (optical fibers) are used as the transmission lines 13, 31 instead of the coaxial cables.

With this structure, the following operation is performed. First, the main signal path will be described, but this is the same as the conventional one. That is, the indoor device 10
The main signal burst generated by the TDMA control unit 1 and the modulation unit 2 in 0 is combined with the pilot burst signal by the combiner 3 and transmitted to the outdoor device 200. The main signal in the IF band input to the outdoor device 200 is the distributor 1
5, transmitted through the bandpass filter 35 and the folding switch 24 to the transmission high frequency unit 25, and the transmission amplifier 25-2
The power is amplified by the antenna 2 through the hybrid 26.
Sent from 7.

On the other hand, on the receiving side, the main signal received from the antenna 27 is converted into the IF band by the receiving high-frequency section 28 via the hybrid 26, and is sent to the indoor unit 100 via the loopback switching unit 29. The baseband signal demodulated by the demodulation unit 33 is processed by the TDMA control unit 34. Next, the operation of the multi-carrier pilot burst will be described.

First, from the oscillators 4-1 to 4-3, the frequency
Is f₀, F₁, F₂Carrier is output and high frequency
Via the switches 7-1 to 7-3
f₀, F ₁, F₂Carriers are synthesized, and further synthesizer 3
Is combined with the main signal and transmitted to the outdoor wireless device 200.
Be done. At this time, the pilot burst control unit 11
Then, according to the control command, the high frequency switches 7-1 to 7-
3 is turned on within the guard time. This is the conventional one
It is the same operation as.

Then, the main signal and pilot carrier transmitted to the indoor unit 200 are branched by the distributor 15. At this time, since the bandpass filter 35 is inserted in one of the main signal paths, only the main signal is transmitted to the transmission high frequency section 25. The other power is distributed by the distributor 16, and each output component of the distributor 16 is multiplied by L, M and N by the frequency multiplier 42-i. Then, only the pilot carrier multiplied by the target is extracted by the bandpass filter 45-i, and the power is detected by the power detector 48-i. Then, after that, the output of each power detector 48-i is input to the logic circuit 23, and in this logic circuit 23, the control command of the wireless device 200 is judged by the combination of the frequencies f _{0 to} f ₂ , and the transmission amplifier 26 ON / OFF control and switching control of the loopback switching devices 24 and 29 are performed. The logic control unit 23 continues this control during the time of one main signal burst.

As described above, the transmission IF of the outdoor unit 200
The stage is branched, the divider 16 is provided, and the frequency multiplier 42-i is connected to each output of the divider 16, and the center frequency is each pilot carrier frequency x at the output of each frequency multiplier 42-i. Bandpass filter 45-
Since i is connected and the power detector 48-i is provided at the output of each bandpass filter 45-i so as to recognize the control command, it is possible to widen the band ratio of the bandpass filter. Therefore, the delay time can be shortened.

[0049] Since the can greatly reduce the time to control start from such pilot carriers transmitted, in this embodiment, it is not necessary to perform the operation of the logic control unit 23 at high speed, further radio device within the guard time It also eliminates the possibility that the control of 1 cannot be started. As a result, the device operation for each burst becomes stable and reliable .

[0050]

[0051]

[0052]

[0053]

[0054]

[0055]

[0056]

[0057]

[0058]

[0059]

[0060]

[0061]

As described above in detail, according to the equipment of the present invention according to claim 1 to 3, a pilot signal fast detector
Distributes the pilot signal separated by the separation unit
The distributor and each output of the distributor are in multiples
Multiple frequency multiplier and multiple frequency multiplier
Input from the output from each frequency of the pilot signal
The center frequency is the frequency obtained by multiplying the above
A plurality of corresponding to each frequency of the pilot signal
Since it is configured with a bandpass filter ,
It is not necessary to use a low-frequency band-pass filter for extracting the pilot signal, which allows the pilot signal transmission to the start of control of the second transmitting / receiving device to be performed in a short time, and the device operation for each burst is stable. In addition to being assured , each divider output is
Using a multiplier, each multiplier (L, M,
N) can be doubled, so bandpass fill
It is possible to increase the bandwidth of the
There is also the advantage of being contracted.

Further, the transmitting device of the present invention according to claim 4 is as follows.
According to the above arrangement, the main signal and the pilot signal are separated by the separating unit.
Distribute the pilot signal separated from the received signal containing
The distributor and the output of each distributor in multiples.
Multiple frequency multiplier to multiply and multiple frequency multiplier
The output from the receiver as an input and each frequency of the pilot signal
The center frequency is the frequency that is a multiple of the above
Number corresponding to each frequency of the pilot signal
It is configured with the bandpass filter of
Low frequency bandpass filter for pilot signal extraction
It is not necessary to use the data
In addition to the advantage that the work is stable and reliable,
Each output of the distributor uses multiple frequency multipliers,
It can be multiplied by multiples (L, M, N)
Therefore, it is possible to widen the bandwidth of the bandpass filter.
Therefore, there is also an advantage that the delay time can be shortened.

[Brief description of drawings]

FIG. 1 is a principle block diagram of the present invention.

FIG. 2 is a block diagram showing an embodiment of the present invention.

FIG. 3 is a block diagram showing a conventional example.

FIG. 4 Pilot carry performed within guard time
In the figure which explains the operation from the sending of a to the control of the outdoor device
is there.

FIG. 5 is a diagram for explaining frequency allocation of pilot carriers.
Is.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 TDMA controller 2 Modulator 3 Combiner 4-i Oscillator 7-i High frequency switch 10 Combiner 11 Pilot burst controller 12 Electric / optical converter 13 Transmission line 14 Optical / electrical converter 15 Separator 16 Distributor (electric power) Distributor) 17-i Bandpass filter 20-i Power detector 23 Logic control unit (remote control unit) 24 Self-diagnosis folding switch 25 Transmission high frequency unit 25-1 Up converter 25-2 Amplifier (high power amplifier) 25 -3 Pre-stage amplifier 25-4 Band pass filter 26 Hybrid 27 Transmission / reception antenna 28 Reception high frequency part 28-1 Band pass filter 28-2, 28-3 Amplifier (low noise amplifier) 28-4 Down converter 29 Folding switch for self-diagnosis 30 electrical / optical converter 31 transmission line 32 optical / electrical converter 33 demodulator 34 TDMA controller 35 band-pass filter 42-i frequency Tei multiplier 45-i band-pass filter 48-i power detector 100 indoor unit (first unit transceiver) 101 main signal burst generating unit 102 pilot signal generator 104 receives signal Demodulation unit 200 Outdoor device (wireless device; second device for transmission / reception) 201 Pilot signal detection unit 202 Pilot signal high speed detection unit 203 Remote control unit

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Ryutaro Omoto 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Inside Nippon Telegraph and Telephone Corporation (56) Reference JP-A-2-63326 (JP, A) HEI 4-185142 (JP, A) JP 59-91762 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04J 3/00-3/26 H04B 1/40 H04B 1 / 76 H04L 7/10

Claims (4)

(57) [Claims] 1. A first device for transmission / reception, which is connected to the first device for transmission / reception via a transmission line and which is arranged at a distance from the first device for transmission / reception and which is the first device for transmission / reception. A transmission / reception second device that is remotely controlled by a pilot signal from the device, and a transmission / reception first device that generates a main signal burst generated by the TDMA control unit and the modulation unit by the TDMA method. A demodulation unit, a pilot signal generation unit that generates the pilot signal for remotely controlling the second device for transmission / reception, and a synthesis unit that synthesizes the main signal burst and the pilot signal. the signal received by the TDMA controller TDMA scheme receiving signal demodulator is provided for performing demodulation processing conforming to, the second device for said transmission reception, said transmission A separation unit for separating the main signal burst and the pilot signal from the signal sent from the credit first device, and a transmission high-frequency unit for frequency-converting the main signal burst separated by the separation unit and further amplifying it by an amplifier. A reception high frequency unit for frequency conversion of the reception signal, a pilot signal high speed detection unit for detecting the pilot signal separated by the separation unit at high speed, and a pilot signal detected at high speed for the pilot signal high speed detection unit A remote control unit for controlling the inside of the second device for transmission / reception based on information, and the pilot signal high-speed detection unit distributes the pilot signal separated by the separation unit.
A distributor and a multiple that multiplies each output of the distributor by its own multiple.
Number of frequency multipliers and the output from the plurality of frequency multipliers as input,
Frequency of each frequency and each Tei multiple times of said pilots signals
Each of the pilot signals whose center frequency is a number
Equipped with multiple bandpass filters corresponding to frequencies
Characterized in that it consists Te, device separation arrangement type TDMA type transceiver having a pilot signal fast detector. 2. The transmitting / receiving second device is the main signal verse.
Switch the return switch from the sender to the receiver.
The remote controller is based on the frequency information of the pilot signal.
Configured to control the switching of the loopback switching device
The pilot according to claim 1, characterized in that
Device-separated TDMA-type transmission having a high-speed signal detection unit
Receiver. 3. A first device for transmission and a first device for transmission
Is connected via a transmission line and
A first device for transmission, which is arranged at a distance from one device
Transmitter for remote control by pilot signal from
Two devices, and the first device for transmission uses the TDMA system by the TDMA control unit and the modulation unit.
Main signal burst raw to produce a modulated main signal burst
And a pilot signal for remotely controlling the transmitting second device.
Signal generating section for generating a signal, and combining for combining the main signal burst and the pilot signal
Is provided to the second transmitting device and the main signal signal from the signal transmitted from the first transmitting device.
And a frequency division conversion of the main signal burst separated by the separation unit.
Further, the high-frequency transmission part for amplification by the amplifier and the pilot signal separated by the separation part are detected at high speed.
Pilot signal high-speed detector, and the pilot signal high-speed detected by the pilot signal high-speed detector.
Control in the second device for transmission based on lot signal information
And a remote control unit for performing the pilot signal high-speed detection unit , and the pilot signal high-speed detection unit distributes the pilot signal separated by the separation unit.
A distributor and a multiple that multiplies each output of the distributor by its own multiple.
Number of frequency multipliers and the output from the plurality of frequency multipliers as input,
Frequency obtained by multiplying each frequency of the Ylot signal by each of the above multiples
Each of the pilot signals whose center frequency is a number
Equipped with multiple bandpass filters corresponding to frequencies
High speed pilot signal detection
A device-separated TDMA-type transmitter having an output. 4. A transmitting device for transmitting a main signal.
In addition, the separating unit receives the main signal and the pilot signal.
Distribution for distributing the pilot signal separated from the received signal
And a multiple that multiplies each output of the distributor by its own multiple.
Number of frequency multipliers and the output from the plurality of frequency multipliers as input,
Frequency obtained by multiplying each frequency of the Ylot signal by each of the above multiples
Each of the pilot signals whose center frequency is a number
Equipped with multiple bandpass filters corresponding to frequencies
An apparatus for transmission, characterized in that