| Improved Space-Time Selective Interference Cancellation Scheme for CDMA Systems |
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| 引用本文： | 戎璐,谢剑英,支小莉. Improved Space-Time Selective Interference Cancellation Scheme for CDMA Systems[J]. 西南交通大学学报(英文版), 2003, 11(2): 138-143 |
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| 作者姓名： | 戎璐 谢剑英 支小莉 |
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| 作者单位： | SchoolofElectronics＆InformationTechnology,ShanghaiJiaoTongUniversity,Shanghai200030,China |
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| 摘 要： | IntroductionAdaptiveantennaarrayscanreduceco channelinterference (CCI)fromotherusersaswellasmitigatetheeffectofmultipathfadinginwirelessenvironments .SinceCDMAsystemsareinterferencelimitedinnature ,smartantennahasbeenregardedasoneofthecoresystemcomponents…
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| 关 键 词： | 码分多址系统 CDMA 时空选择干涉抵消图 自适应矩阵 移动通信 |
Improved Space-Time Selective Interference Cancellation Scheme for CDMA Systems |
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| Rong Lu Xie Jianying Zhi Xiaoli. Improved Space-Time Selective Interference Cancellation Scheme for CDMA Systems[J]. Journal of Southwest Jiaotong University, 2003, 11(2): 138-143 |
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| Authors: | Rong Lu Xie Jianying Zhi Xiaoli |
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| Abstract: | Space-time selective parallel interference cancellation(ST-SPIC) is a computationally effective approach combining multiuser detection (MUD) with antenna array technology for CDMA systems. The exploitation of signal reliability is a key issue in ST-SPIC. In order to improve the reliability estimation, a pair of reliability thresholds are introduced. Then an improved selective interference cancellation algorithm is proposed to exploit the reliability accordingly. More practical space-time processing algorithms are also incorporated in the proposed ST-SPIC scheme to overcome the limitation caused by some idealised assumptions taken in the original ST-SPIC scheme. Numerical results show that the proposed ST-SPIC scheme outperforms its traditional counterpart in a CDMA microcell environment. |
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| Keywords: | selective parallel interference cancellation adaptive array code division multiple access |
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