Improved training sequence structure and timing and frequency synchronization algorithm for OFDM system
An improved timing and frequency synchronization algorithm based on Zadoff-Chu(ZC) sequence for OFDM system is proposed. The algorithm constructs a training sequence with conjugate repetition relationship. Firstly, the timing synchronization is completed by utilizing the conjugate characteristics of...
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| Format: | Article |
| Language: | zho |
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National Computer System Engineering Research Institute of China
2019-06-01
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| Series: | Dianzi Jishu Yingyong |
| Subjects: | |
| Online Access: | http://www.chinaaet.com/article/3000103984 |
| _version_ | 1818082869353906176 |
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| author | Chen Ying Nie Wei |
| author_facet | Chen Ying Nie Wei |
| author_sort | Chen Ying |
| collection | DOAJ |
| description | An improved timing and frequency synchronization algorithm based on Zadoff-Chu(ZC) sequence for OFDM system is proposed. The algorithm constructs a training sequence with conjugate repetition relationship. Firstly, the timing synchronization is completed by utilizing the conjugate characteristics of the training sequence in time domain, and the integer frequency offset(IFO) estimation is obtained directly, not affected by the frequency synchronization performance. Then the fractional frequency offset(FFO) estimation is done using the repeatability of the training sequence after timing synchronization. Theoretical analysis and simulation results show that the improved algorithm′s timing and frequency offset estimation mean square error is lower, the integer and fractional frequency offset estimation range is expanded, and computational complexity is reduced. |
| first_indexed | 2024-12-10T19:28:57Z |
| format | Article |
| id | doaj.art-308c063272034ce1906fb75dcc98c6f1 |
| institution | Directory Open Access Journal |
| issn | 0258-7998 |
| language | zho |
| last_indexed | 2024-12-10T19:28:57Z |
| publishDate | 2019-06-01 |
| publisher | National Computer System Engineering Research Institute of China |
| record_format | Article |
| series | Dianzi Jishu Yingyong |
| spelling | doaj.art-308c063272034ce1906fb75dcc98c6f12022-12-22T01:36:18ZzhoNational Computer System Engineering Research Institute of ChinaDianzi Jishu Yingyong0258-79982019-06-01456899210.16157/j.issn.0258-7998.1903193000103984Improved training sequence structure and timing and frequency synchronization algorithm for OFDM systemChen Ying0Nie Wei1Computer System and Communication Laboratory，Beijing University of Chemical Technology，Beijing 100029，ChinaComputer System and Communication Laboratory，Beijing University of Chemical Technology，Beijing 100029，ChinaAn improved timing and frequency synchronization algorithm based on Zadoff-Chu(ZC) sequence for OFDM system is proposed. The algorithm constructs a training sequence with conjugate repetition relationship. Firstly, the timing synchronization is completed by utilizing the conjugate characteristics of the training sequence in time domain, and the integer frequency offset(IFO) estimation is obtained directly, not affected by the frequency synchronization performance. Then the fractional frequency offset(FFO) estimation is done using the repeatability of the training sequence after timing synchronization. Theoretical analysis and simulation results show that the improved algorithm′s timing and frequency offset estimation mean square error is lower, the integer and fractional frequency offset estimation range is expanded, and computational complexity is reduced.http://www.chinaaet.com/article/3000103984OFDM systemZadoff-Chu sequenceinteger frequency offsettiming synchronizationfrequency synchronizatio |
| spellingShingle | Chen Ying Nie Wei Improved training sequence structure and timing and frequency synchronization algorithm for OFDM system Dianzi Jishu Yingyong OFDM system Zadoff-Chu sequence integer frequency offset timing synchronization frequency synchronizatio |
| title | Improved training sequence structure and timing and frequency synchronization algorithm for OFDM system |
| title_full | Improved training sequence structure and timing and frequency synchronization algorithm for OFDM system |
| title_fullStr | Improved training sequence structure and timing and frequency synchronization algorithm for OFDM system |
| title_full_unstemmed | Improved training sequence structure and timing and frequency synchronization algorithm for OFDM system |
| title_short | Improved training sequence structure and timing and frequency synchronization algorithm for OFDM system |
| title_sort | improved training sequence structure and timing and frequency synchronization algorithm for ofdm system |
| topic | OFDM system Zadoff-Chu sequence integer frequency offset timing synchronization frequency synchronizatio |
| url | http://www.chinaaet.com/article/3000103984 |
| work_keys_str_mv | AT chenying improvedtrainingsequencestructureandtimingandfrequencysynchronizationalgorithmforofdmsystem AT niewei improvedtrainingsequencestructureandtimingandfrequencysynchronizationalgorithmforofdmsystem |