A Minimum Mean-Square-Error (MMSE) Decoder for Quasi-Orthogonal Space–Time Block Code
The quasi-orthogonal space−time block code (QO-STBC) was introduced to achieve a full transmission rate for the four antennas system. In this paper, a decoding method for the QO-STBC is proposed to improve the bit-error-rate (BER) and to solve a rank-deficient problem. The proposed algorit...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-06-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/8/7/732 |
| _version_ | 1798000050917343232 |
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| author | Jae Jin Jeong |
| author_facet | Jae Jin Jeong |
| author_sort | Jae Jin Jeong |
| collection | DOAJ |
| description | The quasi-orthogonal space−time block code (QO-STBC) was introduced to achieve a full transmission rate for the four antennas system. In this paper, a decoding method for the QO-STBC is proposed to improve the bit-error-rate (BER) and to solve a rank-deficient problem. The proposed algorithm is based on the minimum mean-square-error (MMSE) technique. To overcome the implementation problem from the MMSE, an estimation method of the noise variance is developed in this paper. The proposed algorithm is implemented without matrix inversion, therefore, the proposed algorithm achieves a better BER than the conventional algorithms, as it has a low computational complexity. The simulation results show the low BER of the proposed algorithm in a Rayleigh fading channel. |
| first_indexed | 2024-04-11T11:14:06Z |
| format | Article |
| id | doaj.art-7cda2706611d42bf8af347b2f42c23fe |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-04-11T11:14:06Z |
| publishDate | 2019-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-7cda2706611d42bf8af347b2f42c23fe2022-12-22T04:27:19ZengMDPI AGElectronics2079-92922019-06-018773210.3390/electronics8070732electronics8070732A Minimum Mean-Square-Error (MMSE) Decoder for Quasi-Orthogonal Space–Time Block CodeJae Jin Jeong01st C4ISR Systems Team, C4ISR Systems Center, Defense Agency for Technology and Quality (DTaQ), Daegu 42037, KoreaThe quasi-orthogonal space−time block code (QO-STBC) was introduced to achieve a full transmission rate for the four antennas system. In this paper, a decoding method for the QO-STBC is proposed to improve the bit-error-rate (BER) and to solve a rank-deficient problem. The proposed algorithm is based on the minimum mean-square-error (MMSE) technique. To overcome the implementation problem from the MMSE, an estimation method of the noise variance is developed in this paper. The proposed algorithm is implemented without matrix inversion, therefore, the proposed algorithm achieves a better BER than the conventional algorithms, as it has a low computational complexity. The simulation results show the low BER of the proposed algorithm in a Rayleigh fading channel.https://www.mdpi.com/2079-9292/8/7/732multiple-input/multiple-output systemnoise variance estimationMMSE decoderquadrature phase shift keyingwireless communications |
| spellingShingle | Jae Jin Jeong A Minimum Mean-Square-Error (MMSE) Decoder for Quasi-Orthogonal Space–Time Block Code Electronics multiple-input/multiple-output system noise variance estimation MMSE decoder quadrature phase shift keying wireless communications |
| title | A Minimum Mean-Square-Error (MMSE) Decoder for Quasi-Orthogonal Space–Time Block Code |
| title_full | A Minimum Mean-Square-Error (MMSE) Decoder for Quasi-Orthogonal Space–Time Block Code |
| title_fullStr | A Minimum Mean-Square-Error (MMSE) Decoder for Quasi-Orthogonal Space–Time Block Code |
| title_full_unstemmed | A Minimum Mean-Square-Error (MMSE) Decoder for Quasi-Orthogonal Space–Time Block Code |
| title_short | A Minimum Mean-Square-Error (MMSE) Decoder for Quasi-Orthogonal Space–Time Block Code |
| title_sort | minimum mean square error mmse decoder for quasi orthogonal space time block code |
| topic | multiple-input/multiple-output system noise variance estimation MMSE decoder quadrature phase shift keying wireless communications |
| url | https://www.mdpi.com/2079-9292/8/7/732 |
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