METHOD FOR ASSIGNING VARIABLE-LENGTH WALSH CODES FOR CODE DIVISION MULTIPLE ACCESS COMMUNICATIONS SYSTEMS

摘要

mutually orthogonal code division multiple access (CDMA) modulation code of the cellular communication system has occurred as the Walsh code sequences can be. How to assign the Walsh codes have a length of 2 ⁿ of the vector state of the Walsh code system 200 and the selected Walsh code length j = 2 ^nk for receiving an input 404 , comprising Walsh code selected from a state vector length produce a new vector for the j 406-418, further comprising generating a search mask selected Walsh code length for j 416, comprising the selected Walsh code length generated a search sequence for j 418 and a step 434 to 442 to retrieve the next sequence of the search for the available Walsh codes. The state vector is updated to track the assignment and release of the respective code of each of the Walsh codes in Walsh code length system (500).