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Investigation of Dynamic Channel Allocation Algorithms in the TD-SCDMA Trunking System.

Author: LiPengPeng
Tutor: ZhaoZuo
School: Nanjing University of Posts and Telecommunications
Course: Communication and Information System
Keywords: Trunking communication system Time Division Synchronous Code Division Multiple Access Slow dynamic channel allocation Fast dynamic channel allocation Cross - slot interference Dynamic partitioning
CLC: TN929.533
Type: Master's thesis
Year: 2012
Downloads: 13
Quote: 0
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Digital trunking technology from the mid - 1990s , the rise worldwide , has been widely used , and achieved good economic and social benefits . As a third -generation mobile communications standard TD-SCDMA technology , expand to the digital trunking system with independent intellectual property rights , not only to promote the development of China 's digital trunking technology , and fully consistent with the development strategy of the national interest . Cross - slot interference in TD-SCDMA system has been the hot and difficult dynamic channel allocation (DCA) algorithm . The main work of this paper is to analyze the interference in TD - SCDMA cluster system , the hot cell improved algorithms and dynamic partitioning algorithm . Cross- slot interference problems , the paper first study and analysis of the TD-SCDMA cluster system interference , its cross- slot interference simulation and simulation results show that the the TD cluster system crossed slot interference than TD the system is more serious , and on this basis, this article on the use of the slow and fast DCA algorithm to avoid cross - slot interference strategy analysis . Through research and analysis of the three classic slow DCA algorithm , the proposed algorithm improved hot cell . The algorithm method through cross- slot cell sectorization clusters , increase the isolation crossed slot user . Simulation results show that the slow DCA algorithm performance and various types of cell proportion , hot cell algorithm improved the average utilization of the system channels . Of this study and analysis of the two cross - slot interference fast DCA partitioning algorithm , a dynamic partitioning algorithm . This algorithm is dynamically adjusted according to changes in the volume of business in the district of the partition boundary , so that the inner and external traffic to their capacity to adapt . Simulation results show that the partition algorithm performance and the distribution of user access , under the conditions of the dynamic distribution of traffic in the district , dynamic partitioning algorithm to obtain better performance , reduce cross- slot interference and improve the system capacity.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Mobile Communications > Cellular mobile communications systems (mobile phones, mobile phone handsets ) > Code Division Multiple Access (CDMA) mobile communication
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