SU299011A1 - - Google Patents

Description

GENERATOR MODULATED ORTHOGONAL

The device itself belongs to the multi-channel technology, where the channels are sealed by modulated along the airborne road and one another, the shape of which coincides with the orthogonal condition, and is intended for generators: such subcarriers.

Known generators of modulated oiptogonal oipnals are known, containing summing, integrating, and i1-rotating amplifiers.

However, “3 B e ге ective modulated orthogonals, whose shape is based on Legendre polynomials, require a wide frequency band for transmitting signals, while in the absence of matching oneiKTpai 1 transmittable signals; , the complex problem of the presence of complex multiplication blocks, is one difficult.

In order to obtain amplitude-modulated orthogonal signals, the form of which is described by Jacobi oscillates with a Weighting Multiplier, reduce distortion IB L1INII of the connection and simplify the network device in the proposed generator, connected to the amplifiers and amplifiers connected to the same grid, and the same pattern. Connected to the inputs of summing amplifiers, starting: and from the first, before

SIGNALS

a summing amplifier whose number is greater than the number of the can. a-by the number of which depends on the sum of the Parity Jacobi polynomial. Decree: a1n advantages are also achieved by selecting the transfer coefficients of the device elements.

The drawing shows a block diagram of the proposed hekerator.

The shape of the amplitude-modulated orthogonal signals is mathematically described by Jacobi ол «(,, Р) (t),, ,исис, ми them with the parameters“ 1 and. Vary and D, in this device you can match the shape of the used signals with the frequency response channel a С (in z. Summing amplifiers}, 2, 3, 4 and 5 ... with integrating amplifiers 6, 7, 8 to 9,. .. connected in series. Block 10 inverts the input signal. In amplifiers 6,7,8 and 9, performing integration, the sign of the integral is indicated with constant multipliers 1, 3, 5, .... (2 п-1) (Which numerical gains of integrating blocks. To the inputs of summing amplifiers L 2, 3, 4 and 5 ... are connected the outputs of quantizers of communication channels 11, 12, 13, 14 15 ..., and the pulse height and the second channel / prolortsa-yunalna coefficient (this channel modulator tion (A), which may vary (PO zmaku and in magnitude. The pulse duration equal to the duration obtained by orthogonal silnalov and is T seconds.

The block-modulator of the modulated / orthogonal-power generator source is terminated by dashed lines, since the number of kaials / V can be increased or decreased.

The transfer coefficients of summing amplifiers, ккп, are chosen equal to:

ak „- (l- +), G | (1 -xY (+ x) P (-P) (xx

XP, (x) dxK Q,, 2 ..., where

The K. is the number of a Summit 1 Wakelift, to the input of which an impulse of the lth communication channel is applied. MAXIM: The total number of summing switches on the sum of Parameters + P of the Jacob polynomial (and more than the number of channels of the multi-channel LIVIA communication when the sum is integer PRI | SL101M. with 1М: peace amplifiers are more than the number of pitch of the MSC channel by the value “.”, for a decrease in the accuracy of decomposition of the Jacobi polynomial with a 1) function

W (; c) P "(".) (Jc)

in the Legendre series, i.e. on the accuracy of the equality:

A „1Г (l) P / (X) L„ J akPYA.M

W (x) (- x))

The number "1 by which the number of summations | their amplifiers of the CO cp: avneiiyu with the number of channels of the communication line is increased; the maximum maximum value is preserved: a power of x in the power weight (x) series.

Summarizing utilizers /, 2, 3, 4 to 5 ... (a + p +) iB in the case when (a + / b) are an integer, and SumM1iruyushchiei /, 2, 3, 4, 5 ... . (tti + l), when (“+ / 3) is not an integer, have the number of inputs equal to the number of channels

multi-channel communication line. Each subsequent summing amplifier from a + / 3-t-l to N + "+ / 3, went from" + 1 to N + "1 has EA one input less than the previous one.

If each of the channels is transmitted

information, then the inputs of the first "+ / 5 or" i adders act on 1I1M1 pulses with an amplitude proportional to the modulation coefficient of each channel.

If you want to get the normalized amplitude-modulated Jacobi polynomials with weight, the transfer coefficient of summing amplifiers 01 is defined by

kp - Y-kpS P

Where

G lAU + Lbl

2n + 1) r (a + p + d + 1) i / + (a

(a + «-Ы) Г (р + / г г г 1)

Here, - (x) denotes the raiMMia function. This genera- tory allows you to get the output of the B1id signal:

L - I

Ys.,. (() W (x) 2 L "СЛ) (х)

w 0

Before me and e and about b and e and | I

Generator orthogonally modulates OF DATA signals soda | rzhaschy sum1MI1ruyuschie, I1ntegriruyuschie and inverting amplifiers, characterized in that, to obtain orthogonal amplitude modulated signals whose shape .apispvaets Jacobi polynomials with (weighting factor umvnsheni iakazheiy in uplink and simplify generator summing and integrating

the amplifiers are connected in series, and the quantizer of each -th communication channel is connected to 1 in 1 1 summing amplifiers, starting from the first summing amplifier, to the summing amplifier, whose N

more by a number depending on the sum of the parameters of the Jacobi polynomial.

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