| Study of Acquisition in a Rake Receiver Based on Digital Matched-filter |
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| 作者姓名： | TAN Xiao-heng TANG Ma-ke CHEN Li LIU Li-jun |
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| 作者单位： | 1. College of Communication Engineering, Chongqing University, Chongqing 400030, China; Networking and Information Center, Hangzhou Radio and TV University, Hangzhou 310012 ,China |
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| 摘 要： | The Rake receiver based on digital matched filter(DMF) is studied extensively in order to investigate the performance of the PN code acquisition.By using the state transition diagram,the authors derive the analytic expressions of the mean acquisition time of the Rake receiver based on DMF over frequency-selective channel.Numerical analysis is also given.It is shown that the proposed Rake receiver based on DMF can accelerate the process of PN code acquisition.Because there are many resolved multipath components over frequency-selective channel,the detection probability of Rake receiver is larger than the conventional receiver.If more fingers of Rake receiver are available,then the mean acquisition time is longer and the threshold of detector can be set more widely.
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| 关 键 词： | code division multiple access Rake receiver digital matched filter mean acquisition time |
| 修稿时间： | 2007/1/11 0:00:00 |
Study of Acquisition in a Rake Receiver Based on Digital Matched-filter |
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| TAN Xiao-heng,TANG Ma-ke,CHEN Li,LIU Li-jun.Study of Acquisition in a Rake Receiver Based on Digital Matched-filter[J].Storage & Process,2007(5):43-48. |
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| Authors: | TAN Xiao-heng TANG Ma-ke CHEN Li LIU Li-jun |
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| Institution: | 1. College of Communication Engineering, Chongqing University, Chongqing 400030, China; Networking and Information Center, Hangzhou Radio and TV University, Hangzhou 310012 ,China |
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| Abstract: | The Rake receiver based on digital matched filter(DMF) is studied extensively in order to investigate the performance of the PN code acquisition.By using the state transition diagram,the authors derive the analytic expressions of the mean acquisition time of the Rake receiver based on DMF over frequency-selective channel.Numerical analysis is also given.It is shown that the proposed Rake receiver based on DMF can accelerate the process of PN code acquisition.Because there are many resolved multipath components over frequency-selective channel,the detection probability of Rake receiver is larger than the conventional receiver.If more fingers of Rake receiver are available,then the mean acquisition time is longer and the threshold of detector can be set more widely. |
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| Keywords: | code division multiple access Rake receiver digital matched filter mean acquisition time |
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