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| A novel MC DS-CDMA system scheme with high spectral efficiency | |
| 引用本文： | MIAO De-shan,LI Dao-benSchool of Information Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China. A novel MC DS-CDMA system scheme with high spectral efficiency[J]. 中国邮电高校学报(英文版), 2006, 13(3): 11-15. DOI: 10.1016/S1005-8885(07)60003-X |
| 作者姓名： | MIAO De-shan LI Dao-benSchool of Information Engineering Beijing University of Posts and Telecommunications Beijing 100876 China |
| 作者单位： | MIAO De-shan，LI Dao-benSchool of Information Engineering，Beijing University of Posts and Telecommunications，Beijing 100876，China |
| 摘 要： | 1 Introduction Recently, some studies [1, 2] have shown that the Multi- Carrier code-division multiple-access (CDMA) systems can exhibit excellent performance in beyond 3G or 4G mobile communication systems. In general, multicarrier (MC) CDMA systems have… |
| 收稿时间： | 2005-12-12 |
A novel MC DS-CDMA system scheme with high spectral efficiency |
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| MIAO De-shan,LI Dao-ben. A novel MC DS-CDMA system scheme with high spectral efficiency[J]. The Journal of China Universities of Posts and Telecommunications, 2006, 13(3): 11-15. DOI: 10.1016/S1005-8885(07)60003-X | |
| Authors: | MIAO De-shan LI Dao-ben |
| Affiliation: | School of Information Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China |
| Abstract: | This article presents a novel multicarrier direct sequence code-division multiple-access (MC DS-CDMA)scheme based on the loosely synchronous (LS) codes, which can achieve very high spectral efficiency. Instead of the single subcarrier modulation in a conventional MC DS-CDMA scheme,this novel scheme introduces the nonorthogonal subcarrier-group modulation, whose interferences caused by the non-orthogonal spacing in a subcarrier group can be reduced by a multicode detector. A detailed analysis for this system architecture and also a multiple-input-multiple output (MIMO) MC DS-CDMA solution to satisfy the requirement of beyond 3G mobile communication system are proposed. Simulated results demonstrate that this scheme can obtain excellent bit error rate (BER) performance, as well as achieve more than twice the spectral efficiency as that of conventional MC DS-CDMA systems. |
| Keywords: | MC DS-CDMA LS Code subcarrier-group |
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