SU1689939A1 - Generator of discrete orthogonal signals - Google Patents

Abstract

The invention relates to automation and computing and can be used to create generator equipment for communication systems. The purpose of the invention is to improve the noise immunity of the generated signals. The discrete orthogonal signal generator contains a clock generator t block 2 of the formation of the Walia functions, blocks 3 multiplication and switch 4. Entering the switch into the generator improves the correlation properties of the generated signals and increases their noise immunity. 4 il.

Description

The invention relates to automation and computing and can be used to create generator equipment for multichannel communication systems.

The purpose of the invention is to increase the resistance of the formed signals.

Figure 1 shows the functional diagram of the generator; Figure 2 shows timing diagrams illustrating the process of forming a discrete signal P (5.0); on fig.Z - type of generated signals.

The generator includes a clock generator 1, a Walsh function generation unit 2, multiplication units 3, and a switch 4.

The generator works as follows. When pulses are received from the clock generator 1 at the Walsh function generation unit 2, the Walsh functions are generated at the outputs of the unit 2, which are fed to the multiplication units 3.

The function Wai (2, Q) from the third output of unit 2 goes to the control input of the switch 4 s. While the function Wai (2.0) has a positive value, the output of switch 4 is the function Wai (2n-1, b)). As soon as the function Wai (2, o) takes on a negative value, at the output of switch 4, the function Wai (2.6) appears.

In multiplication units 3, the Walsh functions are multiplied by the signal which is formed at the output of the com-device 4.

Figure 2 shows timing diagrams () illustrating the process of generating the signal P (5, 0). The diagrams show the time state:

a) the output of the clock generator 1;

b) the third output of the Walsh function formation unit 2;

c) the 2d output of the Walsh function block 2;

cl

with

about

00

u h so y

figure 1

a) JlJ3XlIlElJILrLn

 }.- - (,9)

8) | 4zFljqi FbWab 9)

d) FtzFbF b f5 9)

d) bj.P: p

e) tlirzyryrZZ P (5, e)

R (Oh, in)

 P (, e

P (“.v)

fa

P (3.6)

P with, in)

 PC5, c)

P (6, c)

3 F (c)

Claims (2)

Claim A discrete orthogonal signal generator comprising a clock, a Walsh function generation unit and multiplication units, the output of a clock generator being connected to a clock input of a function generation unit Walsh. the output of the i-th Walsh function (£ = 1.2 ^P , where η is the order of the function system) of the Walsh function generation unit is connected to the first input of the i-ro multiplication unit, the outputs of the multiplication units are the output of the generator, characterized in that, for the purpose of 10 improving noise immunity generated signals, it comprises a switch, wherein the control input 'and kometatora first data input connected to the output 2 ⁿ -th Walsh function generating unit 15 functions Walsh switch output is connected to second inputs of multipliers. • lppl n n n j I ---------------------------------------- 1 ⁴ RroFbFb ₈ > b] _—. _n W (2.0) WaZ (7.9) Wa £ (5, Θ) hRzF ²³ P (5, Θ) (= l -------- Fl — ι rt = FAzF F-FF - F .¾ ---- b Ρ (Ο, θ) Ρ (<, θ) Ρ (2, Θ) Ρ (3.6) Ρ (*, 6) Ρ (5, θ) Ρ (6, θ) Ρ (? ”. 0) ^ M2.3