SU1345313A1 - Composite discrete filter - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to radio engineering and is jaundiced with restructuring as the signal dimension changes. The device contains the delay e, t, and, multipliers, and 9, -9, adders, and 1C-11 “. With an increase, for example, in the signal dimension, the filter cascades are added without rebuilding the multipliers and delay elements of the previous stages. 1 il. Iw

Description

eleven

The invention relates to radio engineering and can be used to filter signals of variable dimensionality.

The purpose of the invention is to simplify the adjustment when changing the dimension of the filtered signal.

The drawing shows an electrical block diagram of a discrete composite filter.

The discrete composite filter contains the first and second delay elements 1-1 - 1-p, 2-1 - 2-p, the first multiplier 3-1 - 3-p, the second sum of the torus 4-1 - 4-p, the third element 5 -1 - 5-p delay, second multiplier 6-1 6-p, third adder 7-1 - 7-p, fourth delay element 8-1 - 8-ri, third multiplier 9-1 - 9-p, fifth element 10-1 - 10-p delay, the first adder 11-1 - 11-p.

The discrete composite filter works as follows.

On the first - third outputs of the p-th filter stage, the following signals are formed respectively.

P) V +. (1) rk f.t p-and (1) f + i.r

(1) g + 1, g

(1) f, k (ji e, t Р

(p) (p-1)

(z), P, k (d) e, h, (i), 1

() V. uriU, -;., p ..,

where, -v, k. z; /, -; , z j, -; |, - COOT-

the corresponding signals generated in the previous cascade;

about .

(d) ch f4f, (2) f, k ite, i

„(0)„

 (11 Ei-k, K

g., - elements of the input signal

ly, ЗЧрм, p + ii

- a set of weight coefficients implemented by the second elements 2-1 -2 –n delay and the first multipliers - 50 mi 3-1 - 3-p;

w

 2.2

i O)

L-, R.A.

a set of weights, realizable gg by third elements 5-1 - 5-n delay and second multipliers 6-1 -

32

V ,,, V., a ...

Vpj., Is a set of weighting factors implemented by the fourth elements 8-1 - 8-p delay and third multipliers 9-1 - 9-p. molded on

CP)

The signal Z (,, f the first code of the pth link, coincides

with signal

p + 1

I; P., ic 1

which corresponds to the optimal processing of the w s input vector

S i S, ... S p. where sj s,

° ((pii) - correlation

noise matrix.

By increasing, for example, the dimension of the signal, f1 pttra cascades are added without rebuilding the multipliers and the delay elements of the previous cascades.

30 Formula of invention

g

0

0

gg

A discrete composite filter containing n series-connected stages, each of which contains a first delay element whose input is the first input of the cascade, a first multiplier and a first adder, the output of which is the first output of the cascade, and the input of the first delay element of the first cascade the input of the discrete composite filter, and the output of the first adder of the nth cascade was output by the output of the discrete composite filter, that is, with the aim of simplifying the tuning when changing size of the filtered signal, a second delay element is input into each of the stages; its input is connected to the output of the first delay element, and the output is connected to the input of the first multiplier, the second adder, the first input of which is the second input of the first stage, and the output of the second output cascade, serially connected third delay element, the input of which is combined with the first input of the second adder.

five

313453134

the second multiplier, the third adder, it is the input of the cascade, and the output is connected

The second input of which is connected to you — with the second input of the first summation by the course of the first delay element, ara, with the second and third

the output is the third output of the cascade. The inputs of the first stage are combined with

Yes, a quarter delay element and the first input of the first stage,

the third multiplier, the output of which is the first, the second and the third inputs are connected to the first input of the first and subsequent cascades of the compoundismator, as well as the fifth element over-the-third corresponding to the third, second

a holder whose input is the third to the first and the first outputs of the cascade.

Claims (3)

30 Formula of the invention A discrete composite filter containing η series-connected cascades, each of which 25 contains a first delay element, the input of which is the first input of the cascade, the first multiplier and the first adder, the output of which is the first output of the cascade, while 40 the input of the first delay element of the first cascade is an input discreteX. . - input signal elements < ⁺ L. t la G * 7 [Δ d ω C'Z. . . 45 - a set of weighting factors realized by the second delay elements 2-1 -2-p and the first multipliers - 50 mi 3-1 - 3-p; ^{4 ω} p + 1, p + 1'i - a set of weights, implemented by ₅₅ third elements 5- 1 - 5-p delays and second multipliers 6-1-6 ~ n; composite filter, and the output of the first adder of the nth cascade is the output of a discrete composite filter, which is important in that, in order to simplify the tuning when the dimension of the filtered signal changes, a second delay element is introduced into each of the c stages, the input of which is connected to the output of the first delay element, and the output is connected to the input of the first multiplier, a second adder, the first input of which is the second input of the first stage, and the output is the second output of the cascade, the third delay element is connected in series, the input of which is combined with the first input of the second adder, the second multiplier, the third adder, the second input of which is connected to the output of the first delay element, and the output is the third output of the helmet. yes, the fourth delay element and the third multiplier, the output of which is connected to the first input of the first adder, as well as the fifth delay element, the input of which is the third input of the cascade, and the output is connected to the second input of the first adder, while the second and third inputs of the first stage are combined with the first input of the first cascade, the first, second and third inputs of the second and subsequent cascades are connected respectively to the third, second 10 and first outputs of the previous cascade