Pre-Equalized Interference Cancellation for Faster-Than-Nyquist Signaling
An affine projection (AP)-based equalizer (APE) is introduced to eliminate the inter-symbol interference (ISI) for faster-than-Nyquist (FTN) signaling. Based on the APE, a pre-equalized interference cancellation (PIC) algorithm is proposed to eliminate the ISI for FTN signaling. By utilizing interfe...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2019-01-01
|
| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8730329/ |
| _version_ | 1818667642501726208 |
|---|---|
| author | Qiang Li Feng-Kui Gong Pei-Yang Song Sheng-Hua Zhai |
| author_facet | Qiang Li Feng-Kui Gong Pei-Yang Song Sheng-Hua Zhai |
| author_sort | Qiang Li |
| collection | DOAJ |
| description | An affine projection (AP)-based equalizer (APE) is introduced to eliminate the inter-symbol interference (ISI) for faster-than-Nyquist (FTN) signaling. Based on the APE, a pre-equalized interference cancellation (PIC) algorithm is proposed to eliminate the ISI for FTN signaling. By utilizing interference factors in the FTN system and low complexity APE, the computational complexity of the proposed PIC algorithm is much lower than the most existing block-based estimation algorithms, which makes it more practical for implementation. Besides, the proposed PIC algorithm has higher estimation accuracy by comparison with most existing algorithms. The simulation results show that the APE has a satisfactory bit error rate (BER) performance in the moderate ISI cases. In uncoded FTN systems, for all the modulation types adopted in digital video broadcasting-satellite-second generation extension (DVB-S2X), the proposed PIC algorithm can approximate the BER performance of the ISI-free Nyquist signaling when the time acceleration parameter and rolling factor equal to 0.8 and 0.3, respectively, which is beyond the performance of the most existing low-complexity algorithms. Even for 256-amplitude phase shift keying (APSK), the BER performance degradation is no more than 0.05 dB when the BER is 10<sup>-5</sup>. Furthermore, compared with the state-of-the-art frequency-domain equalization algorithm, the proposed PIC algorithm performs well in coded FTN systems. |
| first_indexed | 2024-12-17T06:23:40Z |
| format | Article |
| id | doaj.art-2ce49dfab9544d8595c2cb4d6f059498 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-17T06:23:40Z |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-2ce49dfab9544d8595c2cb4d6f0594982022-12-21T22:00:20ZengIEEEIEEE Access2169-35362019-01-017778687787610.1109/ACCESS.2019.29207338730329Pre-Equalized Interference Cancellation for Faster-Than-Nyquist SignalingQiang Li0Feng-Kui Gong1https://orcid.org/0000-0002-4211-0959Pei-Yang Song2Sheng-Hua Zhai3State Key Laboratory of Integrated Service Networks (ISN), Xidian University, Xi’an, ChinaState Key Laboratory of Integrated Service Networks (ISN), Xidian University, Xi’an, ChinaState Key Laboratory of Integrated Service Networks (ISN), Xidian University, Xi’an, ChinaSchool of Information and Electronics, Beijing Institute of Technology, Beijing, ChinaAn affine projection (AP)-based equalizer (APE) is introduced to eliminate the inter-symbol interference (ISI) for faster-than-Nyquist (FTN) signaling. Based on the APE, a pre-equalized interference cancellation (PIC) algorithm is proposed to eliminate the ISI for FTN signaling. By utilizing interference factors in the FTN system and low complexity APE, the computational complexity of the proposed PIC algorithm is much lower than the most existing block-based estimation algorithms, which makes it more practical for implementation. Besides, the proposed PIC algorithm has higher estimation accuracy by comparison with most existing algorithms. The simulation results show that the APE has a satisfactory bit error rate (BER) performance in the moderate ISI cases. In uncoded FTN systems, for all the modulation types adopted in digital video broadcasting-satellite-second generation extension (DVB-S2X), the proposed PIC algorithm can approximate the BER performance of the ISI-free Nyquist signaling when the time acceleration parameter and rolling factor equal to 0.8 and 0.3, respectively, which is beyond the performance of the most existing low-complexity algorithms. Even for 256-amplitude phase shift keying (APSK), the BER performance degradation is no more than 0.05 dB when the BER is 10<sup>-5</sup>. Furthermore, compared with the state-of-the-art frequency-domain equalization algorithm, the proposed PIC algorithm performs well in coded FTN systems.https://ieeexplore.ieee.org/document/8730329/Affine projection (AP)inter-symbol interference (ISI)faster-than-Nyquist (FTN) signalingdigital video broadcasting-satellite-second generation extension (DVB-S2X) |
| spellingShingle | Qiang Li Feng-Kui Gong Pei-Yang Song Sheng-Hua Zhai Pre-Equalized Interference Cancellation for Faster-Than-Nyquist Signaling IEEE Access Affine projection (AP) inter-symbol interference (ISI) faster-than-Nyquist (FTN) signaling digital video broadcasting-satellite-second generation extension (DVB-S2X) |
| title | Pre-Equalized Interference Cancellation for Faster-Than-Nyquist Signaling |
| title_full | Pre-Equalized Interference Cancellation for Faster-Than-Nyquist Signaling |
| title_fullStr | Pre-Equalized Interference Cancellation for Faster-Than-Nyquist Signaling |
| title_full_unstemmed | Pre-Equalized Interference Cancellation for Faster-Than-Nyquist Signaling |
| title_short | Pre-Equalized Interference Cancellation for Faster-Than-Nyquist Signaling |
| title_sort | pre equalized interference cancellation for faster than nyquist signaling |
| topic | Affine projection (AP) inter-symbol interference (ISI) faster-than-Nyquist (FTN) signaling digital video broadcasting-satellite-second generation extension (DVB-S2X) |
| url | https://ieeexplore.ieee.org/document/8730329/ |
| work_keys_str_mv | AT qiangli preequalizedinterferencecancellationforfasterthannyquistsignaling AT fengkuigong preequalizedinterferencecancellationforfasterthannyquistsignaling AT peiyangsong preequalizedinterferencecancellationforfasterthannyquistsignaling AT shenghuazhai preequalizedinterferencecancellationforfasterthannyquistsignaling |