RU1791805C - Generator of discrete orthogonal functions - Google Patents

Abstract

The invention relates to automation and computer engineering and can be used to create generator and equipment for multichannel communication systems. The purpose of the invention is to simplify a generator. The generator of discrete orthogonal functions comprises a clock pulse generator 1, a frequency divider 2, a Walsh function generation unit 3, an element 4 and 2P, multipliers 5, where 2 is the dimension of the Walsh function system. The connection of the output of clock pulses to the clock input of the Walsh function forming unit is new, which allows simplifying the design by halving the number of multipliers. 3 ill.

Description

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The invention relates to the field of automation and computer technology and can be used to create generator equipment for multi-channel communication systems,

An object of the invention is to simplify a generator of discrete orthogonal functions.

In FIG. 1 is a structural diagram of a generator of discrete orthogonal functions; in FIG. 2 is a timing diagram illustrating the process of generating discrete orthogonal functions 5 (2, 0) and 5 (5, 0) of duration T; in FIG. 3 is a view of discrete orthogonal functions of duration T at the outputs of a generator for a case.

The discrete orthogonal function generator comprises a clock generator 1, a frequency divider 2, a Walsh function generation unit 3, an element 4, 2P of multipliers 5.

The generator of discrete orthogonal functions operates as follows.

A clock pulse generator 1 generates pulses arriving at the input of a frequency divider 2 having a division coefficient equal to two and to the clock input of a Walsh function generation unit 3. As a result, Walsh functions of duration T having a duration of element D are generated at the outputs of the Walsh function generation unit 3 t, and at the output of the frequency divider 2, a sequence of rectangular functions having a duration of A t is formed, the Walsh functions are supplied to the first inputs of the multipliers 5, the number of which is 2P. Gating pulses from the output of the element HE 4 go to the second inputs of the multipliers 5, having numbers from L0 to, and to the second inputs of the multipliers 5, having numbers from 2 + 1 to 2P; gating pulses from the output of the frequency divider 2 are received. Thus, at the outputs of the multipliers 5, 2P discrete orthogonal functions of duration T are formed.

In FIG. 2 is a timing diagram illustrating the process of generating discrete orthogonal functions 5 (2, 0) and 5 (5, 0) of duration T having pulse durations At. The diagrams show the temporary state:

a) the output of the generator 1 clock pulses,

6} the output of block 3 of the Walsh function generator, on which the function Wal (2, 0) is generated;

c) the output of the Walsh function forming unit on which the function is generated

Wal (5, ©);

d) the output of the frequency divider 2;

d) output element NOT 4;

e) the output of multiplier 5, on which function 5 is generated (2, ©);

g) the output of multiplier 5, on which function 5 (5, 0) is generated.

The complete system of generated functions for the case is shown in Fig. 3.

Claims (1)

The claims A discrete orthogonal function generator comprising a clock generator, a frequency divider, a Walsh function generator, an element of NOT, 2P multipliers (where 2P is the dimension of the system of functions), the output of the clock being connected to the input of the frequency divider, the output of the frequency divider connected to the input of the element NOT, the output of the element is NOT connected to the first inputs from the first to 2P multipliers, the first inputs from the (2P +1) to 2p multipliers are connected to the output of the frequency divider, the 1st (, 2h) output of the forming unit Walsh functions Nen with the second input of the 1st multiplier, the outputs of the multipliers are the outputs of the discrete orthogonal function generator, characterized in that, in order to simplify the discrete orthogonal function generator, the output of the clock generator is connected to the clock input of the Walsh function generation unit.