DFT-SV-OFDM based adaptive multi-rate DFT scrambling vector code division multiple access
Multipath interference would degrade the performance of multi-rate systems based on OFDM and CDMA,which spectrum efficiency was also lower relatively.To improve the performance and spectrum efficiency,a novel adaptive multi-rate DFT scrambling vector multi-carrier CDMA (AMR-DFT-VMC-CDMA) was propose...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Journal on Communications
2017-09-01
|
| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/thesisDetails#10.11959/j.issn.1000-436x.2017182 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850211684769071104 |
|---|---|
| author | Gao ZHOU Ping-zhi FAN Li HAO |
| author_facet | Gao ZHOU Ping-zhi FAN Li HAO |
| author_sort | Gao ZHOU |
| collection | DOAJ |
| description | Multipath interference would degrade the performance of multi-rate systems based on OFDM and CDMA,which spectrum efficiency was also lower relatively.To improve the performance and spectrum efficiency,a novel adaptive multi-rate DFT scrambling vector multi-carrier CDMA (AMR-DFT-VMC-CDMA) was proposed based on the theory of matrix permutation and r-cyclical matrix decomposition characteristics.Meanwhile,by theoretical analysis,the parameters of the system could be adaptively adjusted to ensure frame length long enough to break the restriction between channel bit error rate and data frame length on a certain channel utilization condition.The simulation results show that compared with the traditional multi-rate,multi-subcarrier and spreading system,the new system could achieve multi-rate and multi-user information transmission flexibly with better performance and better spectrum efficiency in fading channels.Moreover,it can satisfy the requirement of frame length under certain channel utilization by adjusting the parameters. |
| format | Article |
| id | doaj-art-40c1a4464f574773b2b352ff79c97cef |
| institution | OA Journals |
| issn | 1000-436X |
| language | zho |
| publishDate | 2017-09-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-40c1a4464f574773b2b352ff79c97cef2025-08-20T02:09:31ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2017-09-0138465459712109DFT-SV-OFDM based adaptive multi-rate DFT scrambling vector code division multiple accessGao ZHOUPing-zhi FANLi HAOMultipath interference would degrade the performance of multi-rate systems based on OFDM and CDMA,which spectrum efficiency was also lower relatively.To improve the performance and spectrum efficiency,a novel adaptive multi-rate DFT scrambling vector multi-carrier CDMA (AMR-DFT-VMC-CDMA) was proposed based on the theory of matrix permutation and r-cyclical matrix decomposition characteristics.Meanwhile,by theoretical analysis,the parameters of the system could be adaptively adjusted to ensure frame length long enough to break the restriction between channel bit error rate and data frame length on a certain channel utilization condition.The simulation results show that compared with the traditional multi-rate,multi-subcarrier and spreading system,the new system could achieve multi-rate and multi-user information transmission flexibly with better performance and better spectrum efficiency in fading channels.Moreover,it can satisfy the requirement of frame length under certain channel utilization by adjusting the parameters.http://www.joconline.com.cn/thesisDetails#10.11959/j.issn.1000-436x.2017182OFDM;V-OFDM;MC-DS-CDMA;MC-CDMA |
| spellingShingle | Gao ZHOU Ping-zhi FAN Li HAO DFT-SV-OFDM based adaptive multi-rate DFT scrambling vector code division multiple access Tongxin xuebao OFDM;V-OFDM;MC-DS-CDMA;MC-CDMA |
| title | DFT-SV-OFDM based adaptive multi-rate DFT scrambling vector code division multiple access |
| title_full | DFT-SV-OFDM based adaptive multi-rate DFT scrambling vector code division multiple access |
| title_fullStr | DFT-SV-OFDM based adaptive multi-rate DFT scrambling vector code division multiple access |
| title_full_unstemmed | DFT-SV-OFDM based adaptive multi-rate DFT scrambling vector code division multiple access |
| title_short | DFT-SV-OFDM based adaptive multi-rate DFT scrambling vector code division multiple access |
| title_sort | dft sv ofdm based adaptive multi rate dft scrambling vector code division multiple access |
| topic | OFDM;V-OFDM;MC-DS-CDMA;MC-CDMA |
| url | http://www.joconline.com.cn/thesisDetails#10.11959/j.issn.1000-436x.2017182 |
| work_keys_str_mv | AT gaozhou dftsvofdmbasedadaptivemultiratedftscramblingvectorcodedivisionmultipleaccess AT pingzhifan dftsvofdmbasedadaptivemultiratedftscramblingvectorcodedivisionmultipleaccess AT lihao dftsvofdmbasedadaptivemultiratedftscramblingvectorcodedivisionmultipleaccess |