Paper Info
Title
A Modified DFTs-OFDM with DC Subcarrier Shift for Low PAPR and DC Offset Error Robustness
Abstract
OFDM (Orthogonal Frequency Division Multiplexing) has been widely accepted in various wireless systems such as cellular systems and wireless LAN because of its robustness to frequency selective fading. However it has a drawback of large PAPR (Peak to Average Power Ratio) since it is a multi-carrier transmission scheme. In order to apply DFTs-OFDM (DFT spreading OFDM) for low PAPR, DC offset error robustness is also required to avoid BER performance degradation due to DC offset error for cost-effective wireless terminal implementation. This paper proposes a modified DFTs-OFDM with DC subcarrier shift to cope with low PAPR and DC offset error robustness. Computer simulation results confirm that BER performance is not degraded by DC offset error and low PAPR is maintained. It is also demonstrated that application of the proposed DFTs-OFDM to wireless LANs can reduce HPA output back-off while keeping adjacent channel leakage power (ACLP).
Year
DOI
Venue
2015
10.1109/VTCSpring.2015.7145623
Vehicular Technology Conference
Keywords
Field
DocType
OFDM modulation,adjacent channel interference,discrete Fourier transforms,error statistics,wireless LAN,ACLP,DC offset error robustness,DC subcarrier shift,PAPR,adjacent channel leakage power,modified DFT-OFDM,multicarrier transmission scheme,orthogonal frequency division multiplexing,peak to average power ratio,wireless LAN,wireless systems,wireless terminal implementation
Subcarrier,Wireless,Wireless systems,Computer science,Fading,Robustness (computer science),Electronic engineering,DC bias,Wireless lan,Orthogonal frequency-division multiplexing
Conference
ISSN
Citations 
PageRank 
2577-2465
1
0.35
References 
Authors
2
3
Name
Order
Citations
PageRank
Shigeki Nihei110.35
masahiro umehira27125.98
Takeda, S.313.73