Spreading code generator for code division multiple access communication and code division multiple access communication system using the same

摘要

A spreading code for improving the characteristics by synchronization is used for a channel that can be synchronized and a code number capable of sufficiently coping with the number of users is used Thereby facilitating frame synchronization. An initial value generated in the initial value generator 41 is provided to the user code generator 42. [ The user code generator 42 outputs the user code S42 on the basis of the chip clock CK2 and provides it to the counter 43 and the calculator 61. [ The code number generated by the code number generator 51 is provided to the channel identification code generator 52. [ The channel identification code generator 52 outputs the channel identification code S52 based on the chip clock CK2 and provides it to the calculator 61. [ The operator 61 combines the user code S42 and the channel identification code S52 and outputs the third spreading code S61. The spreading unit 13 spreads the user data UD using the spreading code S61.