Patent ID: 9077471
Filing Date: 2015-07-07
Classification: H04J

Abstract:
1. A code division multiplexing method of performing code division multiplexing of a plurality of signals by using a code matrix, the code matrix comprising a plurality of chips and a plurality of code words, wherein each vector of a first direction of the code matrix represents one of the code words and each vector of a second direction of the code matrix represents a set of the chips, the number of code words being the same as the number of the plurality of signals, the method comprising: generating a plurality of products by multiplying teach signal of the plurality of signals by each chip of a corresponding code word of the plurality of code words; and forming a plurality of multiplexed signals by calculating a sum of the products generated from a set of chips, for each set of chips, wherein there is no orthogonal property between the code words of the code matrix; wherein only one term in a difference or sum of two sets of chips is not zero; and wherein the code matrix is: wherein, b can be an arbitrary number other than zero.