Nonlinear product-feedback shift registers
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A multiplication procedure is described which may be applied to the polynomial forms of nonlinear feedback shift registers to enable two or more factor polynomials to be replaced by a single higher-order nonlinear feedback shift register. The sequential behaviour of the product-feedback shift register is shown to be related to that of its factors in that its sequences may be reproduced by a sequential circuit involving a cascade of the factor-feedback shift registers.
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