| 发射分集MC-CDMA系统空时多用户检测 |
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| 引用本文： | 胡兵,李平安,俞卞章. 发射分集MC-CDMA系统空时多用户检测[J]. 计算机工程与应用, 2004, 40(10): 163-167 |
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| 作者姓名： | 胡兵 李平安 俞卞章 |
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| 作者单位： | 西北工业大学电子工程系,西安,710072;西北工业大学电子工程系,西安,710072;西北工业大学电子工程系,西安,710072 |
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| 基金项目： | 国家教育部优秀青年教师基金资助项目(编号:5310112-0600-NOCJ02)，西工大双新人才建设基金资助项目(编号:5211309-2110-124) |
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| 摘 要： | 该文研究了在频率选择性瑞利衰落信道中的同步多载波码分多址(MC-CDMA)系统上行链路,在移动终端处使用两个发射天线,采用基于空时分组码的发射分集,基站采用分集天线接收。考虑对应于子载波的衰落系数是信道冲激响应的离散傅里叶变换,给出了采用发射分集和接收分集的MC-CDMA系统上行链路信号模型。研究了采用发射分集和接收分集的MC-CDMA系统的解相关多用户检测、最小均方误差(MMSE)多用户检测,进行联合的多用户检测和空时码解码。仿真结果验证了上述模型及算法的有效性。
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| 关 键 词： | 多载波码分多址 发射分集 空时多用户检测 |
| 文章编号： | 1002-8331-(2004)10-0163-05 |
Spatial-Temporal Multiuser Detection for a MC-CDMA System with Transmit Diversity |
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| Hu Bing Li Ping''''an Yu Bianzhang. Spatial-Temporal Multiuser Detection for a MC-CDMA System with Transmit Diversity[J]. Computer Engineering and Applications, 2004, 40(10): 163-167 |
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| Authors: | Hu Bing Li Ping''''an Yu Bianzhang |
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| Abstract: | In this paper,the uplink of a synchronous multicarrier code division multiple access(MC-CDMA)system in frequency selective Rayleigh fading channel is investigated.Two transmit antennas are applied to the mobile terminal,us-ing space-time block coding based transmit diversity.Receive diversity antennas are used in the base station.Based on the observation that the fading coefficients corresponding to subcarriers are discrete Fourier transform of multipath coeffi-cients,the signal model of the uplink of a MC-CDMA system with transmit and receive diversity is presented.Further-more,decorrelating multiuser detection and minimum mean square error(MMSE)multiuser detection are investigated for a MC-CDMA system with transmit and receive diversity.Joint multeruser detection and space-time decoding is conducted.Simulation results are listed to show the effectiveness of the above model and algorithms. |
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| Keywords: | MC-CDMA transmit diversity spatial-temporal multiuser detection |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
