Walsh Codes are most commonly used in CDMA applications orthogonal codes. These codes correspond to lines of a special square matrix CALLED the Hadamard matrix. For a set of Walsh codes of length N, it consists of n lines to form a square matrix of n × n Walsh code. The IS-95 system uses 64 Walsh function matrix 64. The first line of this matrix contains a string of all zeros with each of the FOLLOWING lines containing different combinations of BIT 0 and 1. Each line is orthogonal and equal representation for binary bits. When IMPLEMENTED with the CDMA system, each mobile user uses one of the 64 sequences of rows in the matrix as a spreading code, providing zero cross-correlation among all the other USERS.

Walsh Codes are most commonly used in CDMA applications orthogonal codes. These codes correspond to lines of a special square matrix called the Hadamard matrix. For a set of Walsh codes of length N, it consists of n lines to form a square matrix of n × n Walsh code. The IS-95 system uses 64 Walsh function matrix 64. The first line of this matrix contains a string of all zeros with each of the following lines containing different combinations of bit 0 and 1. Each line is orthogonal and equal representation for binary bits. When implemented with the CDMA system, each mobile user uses one of the 64 sequences of rows in the matrix as a spreading code, providing zero cross-correlation among all the other users.