A novel channel allocation scheme to enhance resource utilization in CDMA/TDD

CDMA/TDD has the flexibility on the resources allocation. Most of CDMA/TDD system adopts same time slot allocation strategy for avoiding unexpected interference. However, the level of traffic asymmetry may be different from cell to cell. If these differences are great and cells are fully loaded, CDMA/TDD system adopting same time slot allocation strategy loses the system capacity. A novel cross time slot strategy based on smart antenna is presented to overcome this problem. The simulation results show that if the levels of the traffic asymmetry between neighboring cells are great and fully loaded, the system adopting cross time slot allocation can improve resource utilization.