Low-complexity and frequency-offset-robust synchronization algorithm based on CAZAC sequence
A low-complexity and frequency-offset-robust synchronization algorithm based on CAZAC sequence was proposed, which was suitable for burst OFDM systems.A new preamble sequence was constructed based on the CAZAC sequence, and its simplified timing metric function was derived by using the combination c...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Journal on Communications
2021-02-01
|
| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2021038/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841539287552622592 |
|---|---|
| author | Fengkui GONG Ni WEN Guo LI Yang GAO |
| author_facet | Fengkui GONG Ni WEN Guo LI Yang GAO |
| author_sort | Fengkui GONG |
| collection | DOAJ |
| description | A low-complexity and frequency-offset-robust synchronization algorithm based on CAZAC sequence was proposed, which was suitable for burst OFDM systems.A new preamble sequence was constructed based on the CAZAC sequence, and its simplified timing metric function was derived by using the combination characteristics of the sequence, and then the delay correlation and symmetric correlation characteristics were used to achieve accurate and stable timing synchronization.Furthermore, based on the new constructed preamble sequence, a weighted frequency synchronization scheme combining cyclic prefix was proposed to obtain more accurate frequency offset estimation.Simulation results show that the proposed algorithm has good synchronization performance in both Gaussian channels and multipath fading channels regardless of frequency offset, and its computational complexity is lower than the most existing representative algorithms. |
| format | Article |
| id | doaj-art-87403441bd5c47cbb551a071e7eb4047 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2021-02-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-87403441bd5c47cbb551a071e7eb40472025-01-14T07:21:37ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2021-02-0142647159740212Low-complexity and frequency-offset-robust synchronization algorithm based on CAZAC sequenceFengkui GONGNi WENGuo LIYang GAOA low-complexity and frequency-offset-robust synchronization algorithm based on CAZAC sequence was proposed, which was suitable for burst OFDM systems.A new preamble sequence was constructed based on the CAZAC sequence, and its simplified timing metric function was derived by using the combination characteristics of the sequence, and then the delay correlation and symmetric correlation characteristics were used to achieve accurate and stable timing synchronization.Furthermore, based on the new constructed preamble sequence, a weighted frequency synchronization scheme combining cyclic prefix was proposed to obtain more accurate frequency offset estimation.Simulation results show that the proposed algorithm has good synchronization performance in both Gaussian channels and multipath fading channels regardless of frequency offset, and its computational complexity is lower than the most existing representative algorithms.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2021038/OFDMCAZAC sequencepreamble sequencesynchronizationfrequency-offset-robust |
| spellingShingle | Fengkui GONG Ni WEN Guo LI Yang GAO Low-complexity and frequency-offset-robust synchronization algorithm based on CAZAC sequence Tongxin xuebao OFDM CAZAC sequence preamble sequence synchronization frequency-offset-robust |
| title | Low-complexity and frequency-offset-robust synchronization algorithm based on CAZAC sequence |
| title_full | Low-complexity and frequency-offset-robust synchronization algorithm based on CAZAC sequence |
| title_fullStr | Low-complexity and frequency-offset-robust synchronization algorithm based on CAZAC sequence |
| title_full_unstemmed | Low-complexity and frequency-offset-robust synchronization algorithm based on CAZAC sequence |
| title_short | Low-complexity and frequency-offset-robust synchronization algorithm based on CAZAC sequence |
| title_sort | low complexity and frequency offset robust synchronization algorithm based on cazac sequence |
| topic | OFDM CAZAC sequence preamble sequence synchronization frequency-offset-robust |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2021038/ |
| work_keys_str_mv | AT fengkuigong lowcomplexityandfrequencyoffsetrobustsynchronizationalgorithmbasedoncazacsequence AT niwen lowcomplexityandfrequencyoffsetrobustsynchronizationalgorithmbasedoncazacsequence AT guoli lowcomplexityandfrequencyoffsetrobustsynchronizationalgorithmbasedoncazacsequence AT yanggao lowcomplexityandfrequencyoffsetrobustsynchronizationalgorithmbasedoncazacsequence |