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http://ntour.ntou.edu.tw:8080/ir/handle/987654321/28808
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| Title: | Low-Complexity Spatial-Frequency-Time-Domain MMSE Multiuser Detectors for MC DS-CDMA |
| Authors: | Hoang-Yang Lu;Hsien-Sen Hung;Chin-Feng Lin;Ching-Hsiang Tseng;Yen-Yu Chen |
| Contributors: | NTOU:Department of Electrical Engineering
國立臺灣海洋大學:電機工程學系 |
| Date: | 2010-11
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| Issue Date: | 2011-10-21T02:40:49Z
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| Publisher: | 2010 12th IEEE International Conference on Communication Technology (ICCT) |
| Abstract: | Abstract:This paper presents three multiuser detectors (MUDs) for the uplinks of spatial-frequency-time-domain (SFT-domain) spread multi-carrier (MC) direct sequence code division multiple access (DS-CDMA) systems. First, aiming at achieving significant performance gain, we propose a joint optimum SFT-domain MUD based on minimum mean square error (MMSE) decision rules. Further, to reduce the computational complexity, we decompose the SFT-domain received signal to low-dimension signal components and propose the corresponding separate MMSE MUDs. Complexity analysis and computer simulations show that the joint optimum SFT-domain MMSE MUD performs the best among the proposed schemes. Meanwhile, the separate MMSE MUDs can provide effective performance close to that of the joint optimum SFT-domain MMSE MUD but with a modest computational overhead. |
| Relation: | pp.508-511 |
| URI: | http://ntour.ntou.edu.tw/handle/987654321/28808 |
| Appears in Collections: | [電機工程學系] 演講及研討會
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