Process for generating a code in a quaternary complex quasi orthogonal communication system of CDMA code division multiple access in, and.Processes and devices for generating a code almost orthogonal quaternary complex for a transmission device channel in a CDMA communication system and transmission channel for youStema communication CDMA

摘要

"The process to generate a code almost orthogonal quaternary complex in a communication system of CDMA code division multiple access in, and.Processes and devices for generating a code almost orthogonal quaternary complex for a transmission device channel in a CDMA communication system and transmission channel for youStema CDMA communication ". It is presented a process to generate a code almost orthogonal quaternary complex in a CDMA communication system.The process comprises generating a sequence - M and then generate specific sequences having a property of the total satisfactory correlation with sequence - M; generating a function of permutation of colunTo convert the sequence - m in a Walsh code; generating masks candidates by columnar displacement of specific sequences with the function of permutation of the column; generating representatives of code.Almost orthogonal operating the masks candidates and Walsh codes having the same length of that of the masks candidates; and select a code almost orthogonal correlation pair satisfying aSplit with the codes of Walsh, from representatives of almost orthogonal code generated, and select a mask associated with the generation of the almost orthogonal code selected.