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MC-CDMA系统级仿真技术研究

The Research on the System Level Simulation of MC-CDMA

【作者】 张俊

【导师】 乐光新;

【作者基本信息】 北京邮电大学 , 通信与信息系统, 2006, 硕士

【摘要】 由于3G系统的核心网还没有完全脱离第二代移动通信系统的核心网结构,所以普遍认为第三代系统仅仅是一个从窄带向未来移动通信系统过渡的阶段。目前,人们已经把目光越来越多得投向三代以后(Beyond 3G)的移动通信系统中,使其可以容纳市场庞大的用户数、改善现有通信品质不良,以及达到高速数据传输的要求,包括正交频分复用(OFDM)、多入多出(MIMO)天线系统、自适应调制与编码(AMC)、自适应复合ARQ的不断发展,将在未来的几年中为B3G系统走向商用奠定重要基础。 然而面对更加复杂的业务,多样的无线资源,这就需要不断探索如何更加高效地管理无线资源,在已有传输技术的基础上不断提高系统QoS和系统容量。然而由于未来B3G系统的架构还没有形成统一的模型,更谈不上在实际系统上去验证那些无线资源管理算法的研究,因此需要对未来移动通信技术及系统架构进行探讨,并且建立合理高效的系统仿真模型对相关的算法进行初步的验证。 本文参考相关资料给出未来多载波CDMA(MC-CDMA)系统结构,介绍了MC-CDMA系统中可能采用的无线资源管理算法,研究了系统级仿真中关键性问题,分析了相关的仿真理论,建立相应的仿真模型,在此基础上采用了一种系统级仿真的方法,开发了基于C/C++的MC-CDMA系统级仿真平台,在该平台上评估了一些关键参数的设置和算法的选用对系统性能的影响,验证了仿真方法和仿真平台的正确性与效率。

【Abstract】 3G system is considered as a middle-system between narrow band mobile communication system and the future system, because its core network is mostly the same as 2G. More and more attentions have been paid on the Beyond 3G mobile communication system recently, it can provide larger capacity, higher data rate and better communication performance.The development on Orthogonal Frequency Division Multiplexing (OFDM), Multi-Input Multi-Output(MIMO),Adaptive Modulation and coding, and Adaptive ARQ will make a groundwork for the commercialize of B3G.However, in face of the more complex service and richer wireless resource, we need to propose more efficient algorithm to manager the wireless resource, and improve the system QoS based on the fixed physical layer technology. But as there isn’t an agreement with the B3G system framework, say nothing of validating the Radio Resource Management(RRM) in a real system, so we have to do research on the framework of future mobile communication system, build an efficient and reasonable model to validate the RRM.In this paper, we propose a framework of the future MC-CDMA system, make a brief introduction of RRM that may be used in MC-CDMA, and also make a deep research on the key problem of system level simulation. Then we develop a system level simulation platform base on c/c++, which aims to validate the performance of some key parameter of mobile cellular system and RRM.

【关键词】 MC-CDMA无线资源管理算法系统级仿真
【Key words】 mc-cdmarrmsystem level simulation
  • 【分类号】TN929.533
  • 【被引频次】2
  • 【下载频次】352
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