| New multitarget constant modulus array for CDMA systems |
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| 作者姓名： | Zhang Jidong~ & Zheng Baoyu~ . Jiangsu Telecom Corporation Limited Nanjing P. R. China . Nanjing Univ. of Posts and Telecommunications NanJing P. R. China |
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| 作者单位： | Zhang Jidong~1 & Zheng Baoyu~2 1. Jiangsu Telecom Corporation Limited，Nanjing 210037，P. R. China; 2. Nanjing Univ. of Posts and Telecommunications，NanJing 210003，P. R. China |
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| 摘 要： | 1 .INTRODUCTIONThe constant modulus algorithm(CMA) is a veryeffective blind approach to remove multiple accessinterference ( MAI) . Recently ,the CMA has beenapplied to the direct-sequence code division multi-ple access (DS-CDMA) systems with array anten-nas , which has tremendous potential to increasethe cellular system capacity . But the CMA algo-rithm lacks signal-selectivity and may capture aninterference instead of the desired user .Pre-sprea-dingis an effective method to alle…
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| 收稿时间： | 20 September 2004 |
New multitarget constant modulus array for CDMA systems |
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| Zhang Jidong & Zheng Baoyu . Jiangsu Telecom Corporation Limited,Nanjing ,P. R. China, . Nanjing Univ. of Posts and Telecommunications,NanJing ,P. R. China.New multitarget constant modulus array for CDMA systems[J].Journal of Systems Engineering and Electronics,2006,17(2):455-457. |
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| Authors: | Zhang Jidong Zheng Baoyu |
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| Institution: | 1. Jiangsu Telecom Corporation Limited, Nanjing 210037, P. R. China
2. Nanjing Univ. of Posts and Telecommunications, Nanjing 210003, P. R. China |
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| Abstract: | A new multitarget constant modulus array is proposed for CDMA systems based on least squares constant modulus algorithm. The new algorithm is called pre-despreading decision directed least squares constant modulus algorithm (D-DDLSCMA). In the new algorithm, the pre-despreading is first applied for multitarget arrays to remove some multiple access signals, then the despreaded signal is processed by the algorithm which united the constant modulus algorithm and decision directed method. Simulation results illustrate the good performance for the proposed algorithm. |
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| Keywords: | constant modulus algorithm adaptive array multiuser detection code division multiple |
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