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《Journal of Electronics & Information Technology》 2006-07
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Performance Analysis of Throughput and Delay for Spread Spectrum ALOHA Multiple Access Systems

Sun Shi-dong①② Nie Jing-nan①② ①② (Institute of Communications Engineering PLA Univ. of Sci.&Tech., Nanjing 210007, China) ①② (National Mobile Communications Research Laboratory, Southeast Univ., Nanjing 210096, China)  
In this paper, the performance of Spread spectrum ALOHA Multiple Access (SAMA) system is deeply studied. The general formula of average bit-error-rate for SAMA system is derived, and the expression for calculating throughput and delay of transmission in SAMA system is also presented, and moreover, the performance improvement in throughput and delay when using forward-error-control technique is analyzed. Numerical results show that a significant performance improvement can be gained by using spread spectrum ALOHA other than conventional ALOHA system, and the improvement will be increased with the increasing of processing gain. Consequently, SAMA is very suitable for applications in distributed packet radio networks.
【Fund】: 国家自然科学基金(60503049);; 东南大学移动通信国家重点实验室开放课题基金(N200602)资助项目
【CateGory Index】: TN914.5
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