| 一种CDMA—时隙ALOHA系统及其性能分析 |
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| 引用本文： | 封翔,李俨,等.一种CDMA—时隙ALOHA系统及其性能分析[J].东南大学学报(自然科学版),1998,28(6):28-33. |
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| 作者姓名： | 封翔 李俨 |
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| 作者单位： | [1]航天技术开发有限公司北京分部，北京100029 [2]Nokia中国研发中心，北京100013 |
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| 基金项目： | 国家高等学校博士学科点专项基金部分资助 |
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| 摘 要： | 本文提出了一种CDMA-时隙ALOHA系统。其中，所有用户使用相同的伪随机序列，但发送时加入不同的随机时延，接收端利用伪随机序列的自相关特性捕获并接收各用户的信号，文中分析了当基站中采用的接收机数不同时，系统的信道吞吐率，并进行了计算仿真。分析和仿真结果表明系统的最大吞吐率比一般时隙ALOHA系统大大提高。
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| 关 键 词： | CDMA 时隙ALOHA QoS 无线接入网吞吐率 信道 PN序列 计算机仿真 |
A CDMA slotted ALHOA Broadband System for Multiservices |
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| Feng Xiang,Li Yan,Bi Guangguo.A CDMA slotted ALHOA Broadband System for Multiservices[J].Journal of Southeast University(Natural Science Edition),1998,28(6):28-33. |
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| Authors: | Feng Xiang Li Yan Bi Guangguo |
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| Institution: | Feng Xiang 1 Li Yan 2 Bi Guangguo 3 |
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| Abstract: | This paper proposes a CDMA slotted ALOHA multiservice system, in which all transmitters use the same PN sequence, but different chip phases and packets can be captured and received because of the auto correlation property of PN sequence. Then its channel throughput is analyzed with different number of receivers in base station. The computer simulations are carried out. Our work shows that the maximum channel throughput in this system is much greater than pure slotted ALOHA system. |
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| Keywords: | CDMA slotted ALOHA QoS throughput capture |
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