Abstract: The hopping communication technology based on code divide multiple access, namely code-hopping multiple access, with pseudo-randomly constructed code-hopping pattern to detect multi-users, is regarded as an effective method to increase the user capacity. However, the significant access collision rate causes internal interference, seriously degrading the bit error performance and coding efficiency. To address the issue, a code hopping pattern with cyclic shifted address code scheme is proposed to reduce the access collision probability. The simulation results show that the proposed scheme can achieve better bit error performance than the hopping pattern based on the pseudo-random type.

Key words: code divide multiple access, access collision, code-hopping pattern, error floor