TD-SCDMA系统中基于模糊理论的外环功率控制算法研究
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摘要
随着21世纪的到来,全球进入信息时代,人们对通信提出了更高更新的要求。TD-SCDMA是我国拥有自主知识产权的3G标准,在国内受到广泛而强烈的关注。
本文主要研究了功率控制的基本原理和方法及其在TD-SCDMA系统中的运用,深入研究了内环功率控制方法和外环功率控制算法。在研究模糊控制理论的基础上,结合模糊控制和外环功率控制特征,提出了一种基于连续型模糊控制的外环功率控制算法。另外,本文研究了多源信息融合技术和模糊理论中的三角模算子,提出了一种基于三角模算子的外环功率控制算法。最后,基于MATLAB的Simulink平台,仿真实现了本文提出的两种外环功率控制算法。与已有的外环功率控制算法相比,本文算法具有步长设置合理、灵活,使SIR目标值尽量满足最低的业务质量要求,降低了对其它用户的干扰,保证了系统的良好性能,提高了系统容量,实验结果验证了算法的优越性。
With the advent of the 21st century, the information period is coming, and higher and newer requirements are required by people for communications. TD-SCDMA, as one of the key technologies of 3G, is paid a great attention for its independent intellectual property rights in China.
This paper is mainly focus on the research of power control principle and methods applied in TD-SCDMA system. Besides, the inner loop power control methods and outer loop power control algorithms are studied deeply. On the basis of research on the fuzzy control theory, an outer-loop power control algorithm based on continuous fuzzy control is proposed in this paper through the combination of fuzzy control and the characeristics of the outer-loop power control. Additionally, the basic theory of information fusion technology and t-norms are studied in this paper. An outer-loop power control algorithm based on t-norms is introduced. Finally, based on MATLAB and Simulink platform, the performance of the two proposed outer-loop power control algorithms are given through simulation. Compared with the existing outer-loop power control algorithms, the proposed algorithms can adjust the SIR target value with reasonable and flexible step-size, which can reduce interference to other users, ensure the good performance of the system, and improve the system capacity. The results of the experiment validate the advantages of the proposed algorithms.
本文主要研究了功率控制的基本原理和方法及其在TD-SCDMA系统中的运用,深入研究了内环功率控制方法和外环功率控制算法。在研究模糊控制理论的基础上,结合模糊控制和外环功率控制特征,提出了一种基于连续型模糊控制的外环功率控制算法。另外,本文研究了多源信息融合技术和模糊理论中的三角模算子,提出了一种基于三角模算子的外环功率控制算法。最后,基于MATLAB的Simulink平台,仿真实现了本文提出的两种外环功率控制算法。与已有的外环功率控制算法相比,本文算法具有步长设置合理、灵活,使SIR目标值尽量满足最低的业务质量要求,降低了对其它用户的干扰,保证了系统的良好性能,提高了系统容量,实验结果验证了算法的优越性。
With the advent of the 21st century, the information period is coming, and higher and newer requirements are required by people for communications. TD-SCDMA, as one of the key technologies of 3G, is paid a great attention for its independent intellectual property rights in China.
This paper is mainly focus on the research of power control principle and methods applied in TD-SCDMA system. Besides, the inner loop power control methods and outer loop power control algorithms are studied deeply. On the basis of research on the fuzzy control theory, an outer-loop power control algorithm based on continuous fuzzy control is proposed in this paper through the combination of fuzzy control and the characeristics of the outer-loop power control. Additionally, the basic theory of information fusion technology and t-norms are studied in this paper. An outer-loop power control algorithm based on t-norms is introduced. Finally, based on MATLAB and Simulink platform, the performance of the two proposed outer-loop power control algorithms are given through simulation. Compared with the existing outer-loop power control algorithms, the proposed algorithms can adjust the SIR target value with reasonable and flexible step-size, which can reduce interference to other users, ensure the good performance of the system, and improve the system capacity. The results of the experiment validate the advantages of the proposed algorithms.
引文
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[2]廖晓滨,赵熙.第三代移动通信网络系统技术与应用基础教程[M].北京：电子工业出版社,2006：7-18
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[4]杨蕾CDMA2000系统物理层设计与功率控制算法的研究[D].天津：天津大学,2004：2-5
[5]李海波,赵培.揭开CDMA2000的技术面纱[N].计算机世界,2004
[6]乔春,王安义.3G功率控制浅析[J].科技广场,2007,1(16)：103-105
[7]洪建全WCDMA的功率控制[J].邮电设计技术,2008,1(1)：37-40
[8]包利明WCDMA通信系统中功率控制算法的研究[D].太原：太原理工大学,2008：2-3
[9]李世鹤TD-SCDMA第三代移动通信系统标准[M].北京：人民邮电出版社,2003：1-9,48-57
[10]张平,王卫东WCDMA移动通信系统[M].第2版.北京：人民邮电出版社,2004：11-15
[11]杨杰.第三代移动通信系统中功率控制技术的研究[D].哈尔滨：哈尔滨工程大学,2005：6-8
[12]Mugen Peng, Wenbo Wang. Technologies and standards for TD-SCDMA evolutions to IMT-advanced[J]. IEEE Communications Magazine,2009,47(12): 50-58
[13]Iskandar, Kurniawan A., Ernawan, M.E. Performance of variable step closed loop power control in CDMA high altitude platforms communication channel[A]. Proceedings 2010 IEEE 72nd Vehicular Technology Conference Fall[C]. Ottawa:IEEE,2010:1-5
[14]Taheri, Mohammad M., Navaie, Keivan, Bastani, Mohammad H. On the outage probability of sir-based power-controlled DS-CDMA networks with spatial poisson traffic[J]. IEEE Transactions on Vehicular Technology,2010,59(1): 499-506
[15]Choi, Seung-Ok, You, Kwan-Ho. Channel adaptive power control in the uplink of CDMA systems[J]. Wireless Personal Communications,2008,47(3):441-448
[16]Miaoyin Wang, Fei Ji, Gang Wei. Simulation analysis of adaptive power control method in TD-SCDMA system[A].2007 IEEE Systems and Information Engineering Design Symposium(SIEDS)[C]. Charlottesville:IEEE,2007:1-4
[17]李鹏,李莉.基于TD-SCDMA系统的闭环功率控制研究[J].西华大学学报,2008,27(5)：32-34
[18]刘学军.一种改进的CDMA系统分布式功控新算法[J].电脑知识与技术,2010,6(12)：3265-3266
[19]Kim, Jeong Gon. Analysis on the downlink cell capacity of TD-SCDMA system[A]. Proceedings of the 5th IASTED Asian Conference on Communication Systems and Networks (AsiaCSN 2008)[C]. Langkawi:Acta Press,2008:105-110
[20]顾洪宇,杨晨阳.多媒体CDMA蜂窝网络上行顽健功率控制算法[J].通信学报,2009,30(5)：114-121
[21]陈朝阳,郗凤君,金香兰,全庆一,张平WCDMA中变步长功率控制过程.电子学报,2002,30(4)：492-494
[22]Adrian Kotelba, Arne Mammela. Efficient power control over fading channels[A]. IEEE GLOBECOM 2008[C]. New Orleans:IEEE,2008:1-6
[23]F. Zarringhalam, B. Seyfe, M. Shikh-Baha. Jointly Optimized Rate and Outer Loop Power Control with Single- and Multi-User Detection[J]. IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS,2009,8(1):186-195
[24]苏铮TD-SCDMA系统上行链路功率控制的研究与实现[D].西安：西北工业大学,2005：8-15
[25]Wu Jiunming, Chen Chunchyuan. An adjustable fuzzy power control architecture for a multi-rate WCDMA system[A]. Proceedings of the 27th Chinese Control Conference[C]. Yunnan:IEEE,2008:633-636
[26]Koskie S, Gajic Z. A nash game algorithm for SIR-Based power control in 3G wireless CDMA networks [J]. IEEE/ACM Trans. on Networking,2005,13(5): 1017-1026
[27]Saraydar C, Mandayam N B, and Goodman D J. Efficient power control via pricing in wireless data networks [J]. IEEE Trans. on Communication,2002, 50(2):291-303
[28]王林志,谢绍斌,耿开磊CDMA系统中的一种新的联合功率控制算法[J].中国科技信息,2006,1(1)：21-23
[29]Avneesh Agrawal, Jeffrey Andrews, John Cioffi, Teresa Meng. Power Control for Successive Interference Cancellation with Imperfect Cancellation[A]. IEEE International Conference on Communications (ICC 2002)[C]. New York:IEEE, 2002:356-360
[30]Warrier, A, Hong Nie, Ilow, J. The Effects of Imperfect Power Control on the Capacity of Cellular CDMA Systems Employing Successive Interference Cancellation[C].2006 IEEE 64th Vehicular Technology Conference (VTC-2006 Fall),2006:1-5
[31]Iskandar, Arief, K.Z. Effect of HAPS movement on the performance of downlink power control CDMA system[A].2010 10th International Conference on Information Sciences, Signal Processing and their Applications (ISSPA 2010)[C]. Piscataway:IEEE,2010:682-685
[32]喻的雄,蔡跃明,钟卫CDMA系统中一种新的分布式博弈功率控制算法[J].电子与信息学报,2008,30(2)：443-446
[33]何建忠WCDMA系统中的联合功率和速率控制[D].哈尔滨：哈尔滨工业大学硕士论文,2007：2-10
[34]Campos-Delgado, D.U, Luna-Rivera, J.M, Martinez-Lopez, F.J. Distributed power control algorithms in the uplink of wireless code-division multiple-access systems[J]. IET Control Theory and Applications,2010,4(5): 795-805
[35]袁杰萍.TD-SCDMA系统中功率控制技术研究[D].郑州：解放军信息工程大学,2006：12-25
[36]Hamed Saghaei, Abbas Ali Lotfi Neyestanak. Variable Step Closed-Loop Power Control in Cellular Wireless CDMA Systems under Multipath Fading[A].2007 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing [C]. Victoria:IEEE,2007:157-160
[37]Hye Jeong Lee, Dong-Ho Cho. A New Adaptive Power Control Scheme Based on Mobile Velocity in Wireless Mobile Communication Systems[A]. IEEE VTS 53rd Vehicular Technology Conference[C]. Piscataway:IEEE,2001:2878-2882
[38]肖力.第三代移动通信系统中的上行功率控制算法研究[D].天津：天津大学,2003：25-27
[39]Rintamaki M. Adaptive closed-loop power control algorithms for CDMA cellular communication systems[J]. IEEE Trans on Vehicular Tech,2004,53 (6): 17562-1768
[40]李侃峰,朱锦CDMA系统功率控制[J].科技情报开发与经济,2008：177
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