TD-LTE与TD-SCDMA系统干扰共存研究
摘要
干扰一直是移动通信系统中一个重要的研究课题。干扰的种类很多,比如杂散干扰、阻塞干扰、互调干扰等等。系统共存的邻道干扰分析方法也很多,大体上说可以分为两大类,确定性计算的分析方法和系统仿真模拟方法。
本文首先介绍了如何采用确定性计算的方法对TD-LTE系统和TD-SCDMA系统基站之间的干扰进行计算和分析。根据基站的各种收发特性和无线性能指标,例如发射端的邻道功率泄露(ACLR)、杂散干扰；以及接收端的邻近信道选择性(ACS)、阻塞特性。同时分别对基站之间共区域和共站址两种情况进行了分析,得出了在各种性能指标下不同系统基站之间共存所需要的额外隔离度,分析和解决了TD-LTE系统和TD-SCDMA系统基站之间的共存问题。
本文重点介绍了利用经典的Monte Carlo方法对系统之间的干扰共存情况进行仿真。通过构造TD-LTE系统和TD-SCDMA系统静态仿真平台,对两系统之间的干扰共存课题作了详细研究。文中着重讨论了系统之间邻道干扰功率比(ACIR)模型、干扰模型和评估指标,仿真出了在三种不同的系统偏移情况下,由于系统之间邻频干扰所产生的上、下行容量损失和吞吐量损失的性能指标,并且给出了合理的分析和解释。
更重要的是,本文的一些计算结果和分析结论对于TD-LTE系统和TD-SCDMA系统的共存部署提出了良好的建议和方案。
Interference in mobile communication systems has been an important research topic aspect. There are many kinds of interferences, such as spurious interference, obstruction interference, inter-modulation interference and so on. Also, there are lots of System analysis methods for coexistence of adjacent-channel interference, and that can be divided into two categories, deterministic calculation method and system simulation methods.
This paper describes how to use the method of deterministic calculation to analyze the interference of base stations between TD-LTE system and TD-SCDMA system. According to a variety of base station transceiver features and wireless performance targets, such as the adjacent channel power leakage (ACLR) and spurious interference from the transmitter; as well as the adjacent channel selectivity (ACS) and blocking features from the receiver. Meanwhile the situations of co-area and co-location are considered. The additional isolation is obtained for resolving the co-existence problem between TD-LTE systems and TD-SCDMA system.
This paper focuses on the Monte Carlo simulation method for the system coexistence by building the static simulation platform, and the interferences between the two systems were studied in detail. This article describes the system model of adjacent-channel interference power ratio (ACIR), interference model and evaluation criterions. Three different offset conditions are considered, due to the adjacent channel interference between systems, the capacity loss and throughput loss performance in uplink and downlink are simulated, and a rational analysis and Interpretation is given.
More importantly, some useful and proposal calculation results and conclusions for the coexistence of TD-LTE system and TD-SCDMA system are presented in this paper.
本文首先介绍了如何采用确定性计算的方法对TD-LTE系统和TD-SCDMA系统基站之间的干扰进行计算和分析。根据基站的各种收发特性和无线性能指标,例如发射端的邻道功率泄露(ACLR)、杂散干扰；以及接收端的邻近信道选择性(ACS)、阻塞特性。同时分别对基站之间共区域和共站址两种情况进行了分析,得出了在各种性能指标下不同系统基站之间共存所需要的额外隔离度,分析和解决了TD-LTE系统和TD-SCDMA系统基站之间的共存问题。
本文重点介绍了利用经典的Monte Carlo方法对系统之间的干扰共存情况进行仿真。通过构造TD-LTE系统和TD-SCDMA系统静态仿真平台,对两系统之间的干扰共存课题作了详细研究。文中着重讨论了系统之间邻道干扰功率比(ACIR)模型、干扰模型和评估指标,仿真出了在三种不同的系统偏移情况下,由于系统之间邻频干扰所产生的上、下行容量损失和吞吐量损失的性能指标,并且给出了合理的分析和解释。
更重要的是,本文的一些计算结果和分析结论对于TD-LTE系统和TD-SCDMA系统的共存部署提出了良好的建议和方案。
Interference in mobile communication systems has been an important research topic aspect. There are many kinds of interferences, such as spurious interference, obstruction interference, inter-modulation interference and so on. Also, there are lots of System analysis methods for coexistence of adjacent-channel interference, and that can be divided into two categories, deterministic calculation method and system simulation methods.
This paper describes how to use the method of deterministic calculation to analyze the interference of base stations between TD-LTE system and TD-SCDMA system. According to a variety of base station transceiver features and wireless performance targets, such as the adjacent channel power leakage (ACLR) and spurious interference from the transmitter; as well as the adjacent channel selectivity (ACS) and blocking features from the receiver. Meanwhile the situations of co-area and co-location are considered. The additional isolation is obtained for resolving the co-existence problem between TD-LTE systems and TD-SCDMA system.
This paper focuses on the Monte Carlo simulation method for the system coexistence by building the static simulation platform, and the interferences between the two systems were studied in detail. This article describes the system model of adjacent-channel interference power ratio (ACIR), interference model and evaluation criterions. Three different offset conditions are considered, due to the adjacent channel interference between systems, the capacity loss and throughput loss performance in uplink and downlink are simulated, and a rational analysis and Interpretation is given.
More importantly, some useful and proposal calculation results and conclusions for the coexistence of TD-LTE system and TD-SCDMA system are presented in this paper.
引文
[1]沈嘉,索世强,全海洋。3GPP长期演进(LTE)技术原理与系统设计。北京：人民邮电出版社,2008.11
[2]李世鹤。TD-SCDMA第三代移动通信系统标准。2003．3
[3]李世鹤。“IMT 2000中的TD-SCDMA标准”。中国通信,1999年第12期
[4]李小文。TD-SCDMA第三代移动通信系统、信令及实现。北京：人民邮电出版社,2003
[5]王文博,郑侃。宽带无线通信OFDM技术(第二版)。北京：人民邮电出版社,2007.8
[6]3GPP TS 36.211:"Physical channels and modulation".
[7]3rd Generation Partnership Project; Technical Specification Group Radio Access Networks; Radio Frequency (RF) system scenarios,3GPP,3GPP TR 25.942
[8]3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Frequency (RF) system scenarios,3GPP,3GPP TR 36.942
[9]Miao Qingyu, Wang Wenbo and Yang Dacheng. An investigation of interference between UTRA-TDD and FDD system. Radio Research Center, Beijing University of Post sand Telecommunications.
[10]Miao Qingyu, Wang Wenbo and Yang Dacheng. The Coexistence of UTRA-TDD and FDD System in the Adjacent Channel. GLOBECOM 01, IEEE. Nov.2001
[11]Holma,H., Povey,g. an dToskala, A Evaluation of interference between uplink and down link in UTRA TDD,VTC'99/Fall.A msterdam,1999,pp.2616-2620
[12]Howard H. Ma, "AN ANALYTICAL MODEL FOR PREDICTING PATH LOSS IN URBAN AND SUBURBANE NVIRONMENTS",0-7803-3692-5196(c) 1996 IEEE
[13]TSG R4#11(00)0414, Siemens, "TDD Capacity Loss Simulation results due to Adjacent Channel Interference",May2 000
[14]TSGR4#9(99)870, SIEMENS ICN S.p.A, "ACIR simulation results for TDD mode in case of coexistence of not synchronized operators", December 1999
[15]3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Base Station (BS) radio transmission and reception (Release 8).3GPP TS 36.104
[16]3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Base Station (BS) radio transmission and reception (TDD) (Release 8). 3GPP TS 25.105
[17]3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Base Station (BS) radio transmission and reception (FDD) (Release 8). 3GPP TS 25.104
[18]冯庆国,张晓丽,张代君,杨贵亮,李世鹤。TD-SCDMA系统与WCDMA系统的共存分析。北京：中国无线电管理,2001(7)：5-8
[19]Chen JingXin, David Grace and Paul Mitchell. Capacity Analysis of Coexisting TD-SCDMA/WCDMA Systems. Personal, Indoor and Mobile Radio Communications,2007
[20]李少斌,景锋,谢显中,林金朝。TD-SCDMA相邻小区下行链路干扰分析与仿真。重庆：重庆邮电学院学报,2002.12
[21]Liu Yang, Wang Fang, CHang Yongyu et al. Theoretical and Simulation Investigation on Coexistence between TD-SCDMA and WCDMA system. Vehicular Technology Conference 2007
[22]王立宁等,MATLAB与通信仿真.北京：人民邮电出版社,2000.1
[23]3GPP Technical Specification, Technical Specification Group GSM/EDGE, "Radio Transmission and Reception", TS 45.005, V4.6.0
[24]ETSI, Technical Specification, "Digital cellular telecommunications system (Phase 2); Radio transmission and reception", GSM 05.05 version 4.23.1
[25]Preben Mogensen and Wei Na. LTE Capacity compared to the Shannon Bound. IEEE,2007
[26]ETSI TR 101 112 (V3.2.0), "Universal Mobile Telecommunication System (UMTS):Selection procedures for the choice of radio transmission technologies of the UMTS", UMTS 30.03 Version 3.2.0, April 1998
[27]T.Taga, Analysis for mean effective gain of mobile antennas in land mobile radio environments, IEEE Trans. Vehicular Technology, Vo 1.39,No.2,1990
[28]Saunders, S., Antennas and Propagation for Wireless Communication System, John Wiley & Sons,1999
[29]Tdoc SMG2 UMTS-L1 5/98, Nolda, "UTRA SYSTEM SIMULATIONS FOR THE MULTI-OPERATOR CASE",Oslo,Norway,1-2April,1998
[2]李世鹤。TD-SCDMA第三代移动通信系统标准。2003．3
[3]李世鹤。“IMT 2000中的TD-SCDMA标准”。中国通信,1999年第12期
[4]李小文。TD-SCDMA第三代移动通信系统、信令及实现。北京：人民邮电出版社,2003
[5]王文博,郑侃。宽带无线通信OFDM技术(第二版)。北京：人民邮电出版社,2007.8
[6]3GPP TS 36.211:"Physical channels and modulation".
[7]3rd Generation Partnership Project; Technical Specification Group Radio Access Networks; Radio Frequency (RF) system scenarios,3GPP,3GPP TR 25.942
[8]3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Frequency (RF) system scenarios,3GPP,3GPP TR 36.942
[9]Miao Qingyu, Wang Wenbo and Yang Dacheng. An investigation of interference between UTRA-TDD and FDD system. Radio Research Center, Beijing University of Post sand Telecommunications.
[10]Miao Qingyu, Wang Wenbo and Yang Dacheng. The Coexistence of UTRA-TDD and FDD System in the Adjacent Channel. GLOBECOM 01, IEEE. Nov.2001
[11]Holma,H., Povey,g. an dToskala, A Evaluation of interference between uplink and down link in UTRA TDD,VTC'99/Fall.A msterdam,1999,pp.2616-2620
[12]Howard H. Ma, "AN ANALYTICAL MODEL FOR PREDICTING PATH LOSS IN URBAN AND SUBURBANE NVIRONMENTS",0-7803-3692-5196(c) 1996 IEEE
[13]TSG R4#11(00)0414, Siemens, "TDD Capacity Loss Simulation results due to Adjacent Channel Interference",May2 000
[14]TSGR4#9(99)870, SIEMENS ICN S.p.A, "ACIR simulation results for TDD mode in case of coexistence of not synchronized operators", December 1999
[15]3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Base Station (BS) radio transmission and reception (Release 8).3GPP TS 36.104
[16]3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Base Station (BS) radio transmission and reception (TDD) (Release 8). 3GPP TS 25.105
[17]3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Base Station (BS) radio transmission and reception (FDD) (Release 8). 3GPP TS 25.104
[18]冯庆国,张晓丽,张代君,杨贵亮,李世鹤。TD-SCDMA系统与WCDMA系统的共存分析。北京：中国无线电管理,2001(7)：5-8
[19]Chen JingXin, David Grace and Paul Mitchell. Capacity Analysis of Coexisting TD-SCDMA/WCDMA Systems. Personal, Indoor and Mobile Radio Communications,2007
[20]李少斌,景锋,谢显中,林金朝。TD-SCDMA相邻小区下行链路干扰分析与仿真。重庆：重庆邮电学院学报,2002.12
[21]Liu Yang, Wang Fang, CHang Yongyu et al. Theoretical and Simulation Investigation on Coexistence between TD-SCDMA and WCDMA system. Vehicular Technology Conference 2007
[22]王立宁等,MATLAB与通信仿真.北京：人民邮电出版社,2000.1
[23]3GPP Technical Specification, Technical Specification Group GSM/EDGE, "Radio Transmission and Reception", TS 45.005, V4.6.0
[24]ETSI, Technical Specification, "Digital cellular telecommunications system (Phase 2); Radio transmission and reception", GSM 05.05 version 4.23.1
[25]Preben Mogensen and Wei Na. LTE Capacity compared to the Shannon Bound. IEEE,2007
[26]ETSI TR 101 112 (V3.2.0), "Universal Mobile Telecommunication System (UMTS):Selection procedures for the choice of radio transmission technologies of the UMTS", UMTS 30.03 Version 3.2.0, April 1998
[27]T.Taga, Analysis for mean effective gain of mobile antennas in land mobile radio environments, IEEE Trans. Vehicular Technology, Vo 1.39,No.2,1990
[28]Saunders, S., Antennas and Propagation for Wireless Communication System, John Wiley & Sons,1999
[29]Tdoc SMG2 UMTS-L1 5/98, Nolda, "UTRA SYSTEM SIMULATIONS FOR THE MULTI-OPERATOR CASE",Oslo,Norway,1-2April,1998