Maximum length linearly occurring code sequence generator in a spread spectrum communication system
First Claim
1. A spread spectrum communication system, by which demodulation of necessary information is effected by correlation output between signals for which spectrum of information signals is spread by using a maximum length linearly occurring code sequence on the sender side and a maximum length linearly occurring code sequence generated on the receiver side, wherein the initial state of shift registers constituting the maximum length linearly occurring code sequence generator is determined by the following equation;
- ##EQU11## j=1, . . . , n whereyj(0) is the j-th element of Y(O),X is the j-th row, andX=PX(O).
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Abstract
A method for determining the initial state of shift registers constituting a modular type or simple construction type maximum length linearly occurring code sequence generator used in a spread spectrum communication system is disclosed, by which it is determined by the following equation; ##EQU1## where yj(0) is the j-th element of Y (0), and
X=P X (0).
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Citations
3 Claims
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1. A spread spectrum communication system, by which demodulation of necessary information is effected by correlation output between signals for which spectrum of information signals is spread by using a maximum length linearly occurring code sequence on the sender side and a maximum length linearly occurring code sequence generated on the receiver side, wherein the initial state of shift registers constituting the maximum length linearly occurring code sequence generator is determined by the following equation;
- ##EQU11## j=1, . . . , n where
yj(0) is the j-th element of Y(O), X is the j-th row, and X=PX(O). - View Dependent Claims (2, 3)
- ##EQU11## j=1, . . . , n where
Specification