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| A Dynamic Channel Allocation Based on Path Gain with Buffer for TDD-CDMA System |
| Li Pei; Wu Wei-ling |
| School of Information Engineering of Beijing University of Posts and Telecommunications, Beijing 100876, China |
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Abstract The TDD-CDMA system with unbalanced slot allocation between uplink (UL) and downlink (DL) will cause the cross-slot interference which may be inferior to system. In order to decrease the interference, a Dynamic Channel Allocation (DCA) based on path gain with buffer (PGBDCA) strategy is proposed. In PGBDCA, the cell is divided into three regions: besides inner and outer region, the PGBDCA introduce the buffer region to manage the slots in which path gain is near to threshold. With static system level simulation, the PGBDCA algorithm shows better performances than conventional algorithms in terms of the probability of the access users. The simulation result also shows the position and size of the buffer are the key factors that will influence on the performance of the system.
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Received: 09 November 2005
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2007, Vol. 29 
