SU640443A1 - Arrangement for distributing frequencies in radio station network - Google Patents

Description

one

The invention relates to radio and may be used for radio stations operating on a common group of frequencies.

A device for allocating frequencies in a network of radio stations is known, which contains a memory block whose outputs are connected to the inputs of a control unit whose output is connected to the first input of memory 1.

However, this device does not provide sufficient accuracy of frequency allocation under the influence of interference.

The purpose of the invention is to improve the accuracy of the frequency distribution under the influence of interference.

To do this, a device for allocating frequencies in the network of radio stations, containing a memory block, whose outputs are connected to the inputs of the control unit, the output of which is connected to the first input of the memory block, has a frequency selection unit and a serially connected quality analyzer and an additional memory block, the output of which is connected to the second input of the memory unit, while the additional outputs of the control unit are connected to the control inputs of the additional memory unit and the frequency selection unit whose output is connected to the auxiliary To the input of the control unit, the frequency selector unit contains a block of elements AND and a series-connected reversible counter, a random number sensor and a number comparison unit, the outputs of which are connected to the inputs of the block of elements And whose output is connected to the first input of the reversible counter, the corresponding outputs of which are connected to the additional inputs of the number comparison unit, the second and third inputs of the reversible counter being the control inputs of the frequency selection unit whose output is the additional output A reversible counter, in addition, the control unit contains a logical node, two OR elements, a trigger and two distributors whose outputs are connected to the inputs of a logical node, with the auxiliary output of the first distributor connected to the first input of the first OR element and the trigger input whose first output is connected to the first input of the second distributor, the auxiliary output of which is connected to the first input of the second element OR, the output of which is connected to the second input of the second distributor, the output of the first element OR Connected to the input of the first distributor, and a second pulse is supplied to the second inputs of the OR elements, while the second trigger output, the output of the second 3 OR element and the first output of the logical node are the additional outputs of the control unit whose inputs are the additional inputs of the logical node, the second output which is output-5 home control unit. The drawing shows a structural electrical circuit of the proposed device. A device for allocating frequencies into the radio network of the radio station contains a memory block 1, the outputs of which are connected to the inputs of control unit 2, the output of which is connected to the first input of memory 1, and also the frequency selection unit 3 and the next-connected quality analyzer 4 and additional a memory unit 5, the output of which is connected to the second input of the memory 1, while the additional outputs of the control unit 2 are connected to the control inputs of the additional memory 5 and the frequency selection unit 3, the output of which is connected to the additional th entry of the control unit 2. The frequency selection block 3 contains a block 25 of elements AND 6 and a series-connected reversible counter 7, a sensor 8 of random numbers and a block 9 of number comparison, the outputs of which are connected to the inputs of the block of elements AND 6 whose output is soy-30 dinene with the first input of the reversible counter 7, corresponding to The outputs of which are connected to the additional inputs of the number comparison block 9, the second and third inputs of the reversible counter 7 in-35 are the control inputs of the frequency selection block whose output is the additional output of the reversing account 7. The control unit 2 contains a logical 40 node 10, two elements OR 11 and 12, a trigger 13 and two distributors 14 and 15, the outputs of which are connected to the inputs of the logical node 10, with the auxiliary output of the first distributor 14 connected 45 to the first input of the first element ORI and trigger input 13, the first output of which is connected to the first input of the second distributor 15, the auxiliary output of which is connected to the first input of the second 50 OR element 12, the output of which is connected to the second input of the second distributor 15, the output of the first element OR 11 connected to the input of the first distributor 14, and a second pulse is fed to the second inputs of the OR OR and 55 12 elements, while the second output of the trigger 13, the output of the second element OR 12 and the first output of the logic node 10 are additional outputs of the control unit 2, the inputs are ko-60 Secondly, there are additional inputs of the logic node 10, the second output of which is the output of control unit 2. The device operates as follows .65 4 In the additional block 5, the memory constantly stores (and renews as necessary) variational series of all M stations, built from the values of the quality parameter (for example, signal-to-noise ratio) at all frequencies by signals from analyzer 4. Channel quality data, which is received in analyzer 4, is obtained, for example, from receiving test signals emitted periodically by either special or associated transmitters. At the time of the re-alignment of the radio lines to input 16 and then the second element OR 12 receives a starting pulse, which from the output of the second element OR 12 is fed to the input of the second distributor 15, to the input of the additional memory block 5 and through the first element OR 11 to the input of the first distributor 14. On this signal from the additional block 5 memories, frequency numbers corresponding to the first members of variational rows of Caledois from M stations are rewritten into block 1 of memory. Memory block 1 contains My (N memory cells located in s M rows and 7V columns. Each column of memory block 1 corresponds to a certain frequency. Thus, after recording in each row of memory block 1, only one cell is excited, corresponding to the best At the same time, the signal from the output of the second distributor 15 enters the logical node 10 and thereby connects the reversible counter 7 through the logical node 10 to the first outputs of the memory block 1 (the outputs of the first column of the memory block 1) first rasp Cell 14 to the inputs of memory block 1 successively with a period t receives interrogation of the cells of memory block 1. The first pulse directs the cells of the first row (corresponding to station No. 1), the second pulse — second row (station No. 2), etc. lines (station No. M). The impulse passes to the output only if the corresponding cell in the line is excited. Thus, during the time Gt, the logical node 10 receives the number of pulses equal to the number of stations applying for frequency with number 1. With the exit lane the first distributor 14 pulse through the first element OR 11 is fed back to the input of the first distributor 14 and at the same time to the trigger 13, converting it to a single state and thereby allowing reading the result from the reversible counter 7. If we assume that the number recorded in the reversible counter is 7 more O, then the signal from the trigger 13 reversible counter 7 goes into subtraction mode, the signal at its output excites the sensor 8, and one of the signals corresponding to the number recorded in the reversing counter 7, is fed to the input b Lock 9 Comparain, in which the threshold values are stored. At the other input of the comparison unit 9, it posts a random number from the sensor 8. Here and select one of the stations, which is given, the selected frequency. Depending on the result of the comparison, a sningal appears at one of the outputs of the comparison block 9, which through the block of elements AND 6 enters the reversible counter 7 and is subtracted from the number recorded in the reversible counter 7. Then the signals from the first distributor 14 are again received alternately at the inputs logical node 10, but now the signals from the output of logical node 10 are subtracted from the contents of the reversible counter 7 (since it is transferred to the subtraction mode by a signal from trigger 13). At the moment of resetting the reversible counter 7, the Sigal from its output enters the logical node 10, from the output of which the Sigial enters the memory block 1 - into the line corresponding to the station where the selected frequency is sent (this correspondence is established in the logical node 10 from the first distributor 14 and from the output of the reversible counter 7). Thereafter, this line of memory block 1 is blocked until the end of the tuning session.

If, after the first interrogation of the memory block 1 in the reversible counter 7, O is fixed, then no signal is received from the reversible counter 7 and the sensor 8, the comparison block 9 and the logical node 10. This indicates that none of the M stations selects this frequency as the 1st member of the variational series.

After the signal reaches the end of the first distributor 14, it re-enters through the first ILP element AND at its input and simultaneously switches the trigger 13 to zero polarization. The signal from the output of the trigger 13 switches the reversible counter 7 to the summing mode and simultaneously sends a signal to the second distributor 15, the signal from whose output goes to logic node 10 and connects the reversing counter 7 to the outputs of the cells of the second column of the memory 1. Thereby, the second frequency is checked.

After interrogating all the L frequencies, the Sigal from the output of the second distributor 15 through the second element OR 12 is again fed to its input, as well as in the additional memory block 5. On this signal, frequency numbers corresponding to the second members of the variation series of all stations (except for those that have already chosen the frequency and are locked) are recorded in memory block 1. In each row of the 1 pa.mti block, only one frequency is recorded, so the recording of the new frequency is made after the old one is erased.

. . After this, again, the signal from the second distributor 15, via logic node 10, connects the reversible counter 7 to the first column of the memory unit G and the operation cycle repeats.

When using the proposed device, the accuracy of the frequency distribution under the influence of interference is increased.

Claims (3)

1. A device for allocating frequencies in a network of radio stations, comprising a memory unit, the outputs of which are connected to the inputs of the control unit, the output of which is connected to the first input of the memory unit, characterized in that, in order to improve the frequency distribution accuracy under the influence of interference, it has a frequency selection block and a serially connected quality analyzer and an additional memory block, the output of which is connected to the second input of the memory block, while the additional outputs of the control unit are connected to the control inputs up to an additional I & T unit and a frequency selection unit, the output of which is connected to an additional input of the control unit. 2.-Device section 1, characterized in that the frequency selection block contains a block of elements AND and a series-connected reversible counter, a random number sensor and a number comparison block, the outputs of which are connected to the inputs of the element block. And whose output is connected to the first - the input of the reversible counter, the corresponding inputs of which are connected to the additional inputs of the number comparison unit, the second and third inputs of the reversible counter being the control inputs of the frequency selection unit, the output of which is the additional first up-down counter output. 3. The device according to claim 1, characterized in that the control unit contains a logical node, two OR elements, a trigger and two distributors, the outputs of which are connected to the inputs of the logical node, with the additional output of the first distributor connected to the first input of the first ILR element and the trigger input The first output of which is connected to the first input of the second distributor, the auxiliary output of which is connected to the first input of the second element OR, the output of which is connected to the second input of the second distributor, the output of the first element and the ILP connectors with the input of the first distributor, and the second inputs of the OR elements are given a starting pulse, while the second trigger output, the output of the second OR element, and the first output of the logical node are controlled by the control unit, the inputs of which are the ADDITIONAL THROUGH inputs of the logical node, the second output of which is the output of the control unit. Sources of information received during the examination 1. Khlytchiev SM and others. Ways of automation of radio reception centers. - “Elektrpsv zb, 1958, № 6, p. 30-34.