Novel Algorithm for Joint Channel Estimation and Spreading Sequence Detection in DSSS Systems
In this paper, a novel turbo-based algorithm is proposed for joint channel estimation and spreading sequence detection in a Direct Sequence Spread Spectrum (DSSS) system. For the channel estimation, a set of candidate angles is designed in an uncertainty range, which is defined as the domain of the...
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IEEE
2024-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/10663569/ |
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| author | Seungjun Oh Hichan Moon |
| author_facet | Seungjun Oh Hichan Moon |
| author_sort | Seungjun Oh |
| collection | DOAJ |
| description | In this paper, a novel turbo-based algorithm is proposed for joint channel estimation and spreading sequence detection in a Direct Sequence Spread Spectrum (DSSS) system. For the channel estimation, a set of candidate angles is designed in an uncertainty range, which is defined as the domain of the phase component that a receiver should consider. The receiver performs a turbo processing to generate a performance metric for each candidate angle, then selects the angle with the best performance metric among candidate angles. With the proposed algorithm, as the number of candidate angles increases, the performance of the proposed algorithm improves. On the other hand, its computational complexity increases proportionally to the number of candidate angles. To enhance the performance of the algorithm under a given complexity constraint, a two-step approach is proposed for the turbo-based algorithm. The performance of the proposed algorithm is evaluated by simulation. Results show that the performance of the proposed algorithm approaches that of the turbo-based algorithm with ideal channel information as the number of candidate angles and that of iterations of the turbo processing increase. |
| format | Article |
| id | doaj-art-bc17aeb307c542ef8bc798875eb99652 |
| institution | DOAJ |
| issn | 2169-3536 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj-art-bc17aeb307c542ef8bc798875eb996522025-08-20T02:49:09ZengIEEEIEEE Access2169-35362024-01-011212869412870110.1109/ACCESS.2024.344928410663569Novel Algorithm for Joint Channel Estimation and Spreading Sequence Detection in DSSS SystemsSeungjun Oh0https://orcid.org/0000-0002-4089-3291Hichan Moon1https://orcid.org/0000-0002-4835-9464Department of Electronic Engineering, Hanyang University, Seoul, South KoreaDepartment of Electronic Engineering, Hanyang University, Seoul, South KoreaIn this paper, a novel turbo-based algorithm is proposed for joint channel estimation and spreading sequence detection in a Direct Sequence Spread Spectrum (DSSS) system. For the channel estimation, a set of candidate angles is designed in an uncertainty range, which is defined as the domain of the phase component that a receiver should consider. The receiver performs a turbo processing to generate a performance metric for each candidate angle, then selects the angle with the best performance metric among candidate angles. With the proposed algorithm, as the number of candidate angles increases, the performance of the proposed algorithm improves. On the other hand, its computational complexity increases proportionally to the number of candidate angles. To enhance the performance of the algorithm under a given complexity constraint, a two-step approach is proposed for the turbo-based algorithm. The performance of the proposed algorithm is evaluated by simulation. Results show that the performance of the proposed algorithm approaches that of the turbo-based algorithm with ideal channel information as the number of candidate angles and that of iterations of the turbo processing increase.https://ieeexplore.ieee.org/document/10663569/Channel estimationsequence detectiondirect sequencespread spectrumturbo processing |
| spellingShingle | Seungjun Oh Hichan Moon Novel Algorithm for Joint Channel Estimation and Spreading Sequence Detection in DSSS Systems IEEE Access Channel estimation sequence detection direct sequence spread spectrum turbo processing |
| title | Novel Algorithm for Joint Channel Estimation and Spreading Sequence Detection in DSSS Systems |
| title_full | Novel Algorithm for Joint Channel Estimation and Spreading Sequence Detection in DSSS Systems |
| title_fullStr | Novel Algorithm for Joint Channel Estimation and Spreading Sequence Detection in DSSS Systems |
| title_full_unstemmed | Novel Algorithm for Joint Channel Estimation and Spreading Sequence Detection in DSSS Systems |
| title_short | Novel Algorithm for Joint Channel Estimation and Spreading Sequence Detection in DSSS Systems |
| title_sort | novel algorithm for joint channel estimation and spreading sequence detection in dsss systems |
| topic | Channel estimation sequence detection direct sequence spread spectrum turbo processing |
| url | https://ieeexplore.ieee.org/document/10663569/ |
| work_keys_str_mv | AT seungjunoh novelalgorithmforjointchannelestimationandspreadingsequencedetectionindssssystems AT hichanmoon novelalgorithmforjointchannelestimationandspreadingsequencedetectionindssssystems |