Channel Estimation Based on IOTA Filter in OFDM/OQPSK and OFDM/OQAM Systems
In this paper, we present a study of bit error rate (BER) for orthogonal frequency division multiplexing/offset quadrature phase shift keying (OFDM/OQPSK) and OFDM/offset quadrature amplitude modulation (OQAM) systems with an isotropic orthogonal transfer algorithm (IOTA) filter. The novel noise sup...
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| Format: | Article |
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MDPI AG
2019-04-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/9/7/1454 |
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| author | Xiao Zhou Chengyou Wang Ruiguang Tang |
| author_facet | Xiao Zhou Chengyou Wang Ruiguang Tang |
| author_sort | Xiao Zhou |
| collection | DOAJ |
| description | In this paper, we present a study of bit error rate (BER) for orthogonal frequency division multiplexing/offset quadrature phase shift keying (OFDM/OQPSK) and OFDM/offset quadrature amplitude modulation (OQAM) systems with an isotropic orthogonal transfer algorithm (IOTA) filter. The novel noise suppression method based on an IOTA filter is proposed to reduce the error of channel estimation caused by additive white Gaussian noise (AWGN). The OFDM/OQPSK and OFDM/OQAM systems do not insert the guard interval (GI) and pilots in the signal frames, thus they possess transmission efficiency. An analysis was carried out for convolutional coded OFDM/OQPSK and OFDM/OQAM systems in Rayleigh fading channels with generator polynomials and constraint lengths. Compared with conventional OFDM/QPSK and OFDM/QAM systems with the insertion of comb-type pilots, the proposed IOTA filter-based channel estimation method can provide significant energy per bit to time-varying noise power spectral density ratio gains over time and frequency-selective propagation Rayleigh fading channels in OFDM/OQPSK and OFDM/OQAM systems. |
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| language | English |
| last_indexed | 2024-12-23T06:16:11Z |
| publishDate | 2019-04-01 |
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| spelling | doaj.art-43dc52252ae64425a005529e29b076872022-12-21T17:57:18ZengMDPI AGApplied Sciences2076-34172019-04-0197145410.3390/app9071454app9071454Channel Estimation Based on IOTA Filter in OFDM/OQPSK and OFDM/OQAM SystemsXiao Zhou0Chengyou Wang1Ruiguang Tang2School of Mechanical, Electrical and Information Engineering, Shandong University, Weihai 264209, ChinaSchool of Mechanical, Electrical and Information Engineering, Shandong University, Weihai 264209, ChinaSchool of Mechanical, Electrical and Information Engineering, Shandong University, Weihai 264209, ChinaIn this paper, we present a study of bit error rate (BER) for orthogonal frequency division multiplexing/offset quadrature phase shift keying (OFDM/OQPSK) and OFDM/offset quadrature amplitude modulation (OQAM) systems with an isotropic orthogonal transfer algorithm (IOTA) filter. The novel noise suppression method based on an IOTA filter is proposed to reduce the error of channel estimation caused by additive white Gaussian noise (AWGN). The OFDM/OQPSK and OFDM/OQAM systems do not insert the guard interval (GI) and pilots in the signal frames, thus they possess transmission efficiency. An analysis was carried out for convolutional coded OFDM/OQPSK and OFDM/OQAM systems in Rayleigh fading channels with generator polynomials and constraint lengths. Compared with conventional OFDM/QPSK and OFDM/QAM systems with the insertion of comb-type pilots, the proposed IOTA filter-based channel estimation method can provide significant energy per bit to time-varying noise power spectral density ratio gains over time and frequency-selective propagation Rayleigh fading channels in OFDM/OQPSK and OFDM/OQAM systems.https://www.mdpi.com/2076-3417/9/7/1454channel estimationorthogonal frequency division multiplexing (OFDM)isotropic orthogonal transform algorithm (IOTA)offset quadrature phase shift keying (OQPSK)offset quadrature amplitude modulation (OQAM)additive white Gaussian noise (AWGN) |
| spellingShingle | Xiao Zhou Chengyou Wang Ruiguang Tang Channel Estimation Based on IOTA Filter in OFDM/OQPSK and OFDM/OQAM Systems Applied Sciences channel estimation orthogonal frequency division multiplexing (OFDM) isotropic orthogonal transform algorithm (IOTA) offset quadrature phase shift keying (OQPSK) offset quadrature amplitude modulation (OQAM) additive white Gaussian noise (AWGN) |
| title | Channel Estimation Based on IOTA Filter in OFDM/OQPSK and OFDM/OQAM Systems |
| title_full | Channel Estimation Based on IOTA Filter in OFDM/OQPSK and OFDM/OQAM Systems |
| title_fullStr | Channel Estimation Based on IOTA Filter in OFDM/OQPSK and OFDM/OQAM Systems |
| title_full_unstemmed | Channel Estimation Based on IOTA Filter in OFDM/OQPSK and OFDM/OQAM Systems |
| title_short | Channel Estimation Based on IOTA Filter in OFDM/OQPSK and OFDM/OQAM Systems |
| title_sort | channel estimation based on iota filter in ofdm oqpsk and ofdm oqam systems |
| topic | channel estimation orthogonal frequency division multiplexing (OFDM) isotropic orthogonal transform algorithm (IOTA) offset quadrature phase shift keying (OQPSK) offset quadrature amplitude modulation (OQAM) additive white Gaussian noise (AWGN) |
| url | https://www.mdpi.com/2076-3417/9/7/1454 |
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