On the performance of hybrid carrier system with spectrum precoding based on WFRFT
Abstract High out-of-band (OOB) power emission has become the main shortcoming of multicarrier scheme in regard to the requirements and challenges of 5G. In this paper, two effective OOB power reduction methods, previously applied to traditional orthogonal frequency division multiplexing (OFDM) syst...
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doaj-d033b955dab241398cfdef72049a5ce52020-11-24T23:44:14ZengSpringerOpenEURASIP Journal on Wireless Communications and Networking1687-14992017-06-012017111110.1186/s13638-017-0890-7On the performance of hybrid carrier system with spectrum precoding based on WFRFTZhenduo Wang0Lin Mei1Xiaolu Wang2Xuejun Sha3Naitong Zhang4Communication Research Center, Harbin Institute of TechnologyCommunication Research Center, Harbin Institute of TechnologyCommunication Research Center, Harbin Institute of TechnologyCommunication Research Center, Harbin Institute of TechnologyCommunication Research Center, Harbin Institute of TechnologyAbstract High out-of-band (OOB) power emission has become the main shortcoming of multicarrier scheme in regard to the requirements and challenges of 5G. In this paper, two effective OOB power reduction methods, previously applied to traditional orthogonal frequency division multiplexing (OFDM) system, are proposed in hybrid carrier (HC) scheme based on weighted-type fractional Fourier transform (WFRFT). Simulation results demonstrate that, due to the flexible selection of WFRFT order in the HC system, combined bit error rate (BER) and peak-to-average power ratio (PAPR) performance advantages are gained without sidelobe impact and significant complexity increase in comparison with the OFDM scheme with spectrum precoding. In projection precoding, a smaller error vector magnitude of precoder G χ is obtained in the proposed hybrid carrier scheme. In SVD precoding with an orthogonal decoding at the receiver, better BER performance could also be acquired at WFRFT order over the fading channels. The proposed two WFRFT-based structures are complementary, and their potential scenarios are given. In addition, applying the feature of projection precoding to channel estimation, a novel pilot structure based on WFRFT is posed to reduce the introduced error of spectrum precoding and finally helps to improve the BER performance.http://link.springer.com/article/10.1186/s13638-017-0890-7Hybrid carrier (HC)Weighted-type fractional Fourier transform (WFRFT)Spectrum precodingOut-of-band (OOB) powerChannel estimation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Zhenduo Wang Lin Mei Xiaolu Wang Xuejun Sha Naitong Zhang |
spellingShingle |
Zhenduo Wang Lin Mei Xiaolu Wang Xuejun Sha Naitong Zhang On the performance of hybrid carrier system with spectrum precoding based on WFRFT EURASIP Journal on Wireless Communications and Networking Hybrid carrier (HC) Weighted-type fractional Fourier transform (WFRFT) Spectrum precoding Out-of-band (OOB) power Channel estimation |
author_facet |
Zhenduo Wang Lin Mei Xiaolu Wang Xuejun Sha Naitong Zhang |
author_sort |
Zhenduo Wang |
title |
On the performance of hybrid carrier system with spectrum precoding based on WFRFT |
title_short |
On the performance of hybrid carrier system with spectrum precoding based on WFRFT |
title_full |
On the performance of hybrid carrier system with spectrum precoding based on WFRFT |
title_fullStr |
On the performance of hybrid carrier system with spectrum precoding based on WFRFT |
title_full_unstemmed |
On the performance of hybrid carrier system with spectrum precoding based on WFRFT |
title_sort |
on the performance of hybrid carrier system with spectrum precoding based on wfrft |
publisher |
SpringerOpen |
series |
EURASIP Journal on Wireless Communications and Networking |
issn |
1687-1499 |
publishDate |
2017-06-01 |
description |
Abstract High out-of-band (OOB) power emission has become the main shortcoming of multicarrier scheme in regard to the requirements and challenges of 5G. In this paper, two effective OOB power reduction methods, previously applied to traditional orthogonal frequency division multiplexing (OFDM) system, are proposed in hybrid carrier (HC) scheme based on weighted-type fractional Fourier transform (WFRFT). Simulation results demonstrate that, due to the flexible selection of WFRFT order in the HC system, combined bit error rate (BER) and peak-to-average power ratio (PAPR) performance advantages are gained without sidelobe impact and significant complexity increase in comparison with the OFDM scheme with spectrum precoding. In projection precoding, a smaller error vector magnitude of precoder G χ is obtained in the proposed hybrid carrier scheme. In SVD precoding with an orthogonal decoding at the receiver, better BER performance could also be acquired at WFRFT order over the fading channels. The proposed two WFRFT-based structures are complementary, and their potential scenarios are given. In addition, applying the feature of projection precoding to channel estimation, a novel pilot structure based on WFRFT is posed to reduce the introduced error of spectrum precoding and finally helps to improve the BER performance. |
topic |
Hybrid carrier (HC) Weighted-type fractional Fourier transform (WFRFT) Spectrum precoding Out-of-band (OOB) power Channel estimation |
url |
http://link.springer.com/article/10.1186/s13638-017-0890-7 |
work_keys_str_mv |
AT zhenduowang ontheperformanceofhybridcarriersystemwithspectrumprecodingbasedonwfrft AT linmei ontheperformanceofhybridcarriersystemwithspectrumprecodingbasedonwfrft AT xiaoluwang ontheperformanceofhybridcarriersystemwithspectrumprecodingbasedonwfrft AT xuejunsha ontheperformanceofhybridcarriersystemwithspectrumprecodingbasedonwfrft AT naitongzhang ontheperformanceofhybridcarriersystemwithspectrumprecodingbasedonwfrft |
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