.png){kind=icon}
返回
Spectral Precoding for Constant-Envelope OFDM
.png){kind=icon}
OA
AI
DOI：10.1109/TCOMM.2010.02.080682.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Spectrally precoded orthogonal frequency-division multiplexing (OFDM) and constant-envelope OFDM (CE-OFDM) are two modified OFDM formats that enhance the signaling features of OFDM, while allowing for the efficient implementation by discrete Fourier transform and the insertion of guard intervals to counteract channel dispersion. The spectrally precoded OFDM signal provides very small power spectral sidelobes decaying asymptotically as f(-2J-2), with.. an integer-valued design parameter, thereby suppressing sidelobe powers effectively and achieving higher spectral efficiency than nonprecoded rectangularly-pulsed OFDM which has power spectral sidelobes decaying asymptotically as f(-2). The CE-OFDM signal exhibits a unity peak-to-average power ratio, and thus enables the efficient use of transmitter's power amplifier. In this paper, a specific CE-OFDM block signaling format is proposed to incorporate spectral precoding with an aim to suppressing sidelobe powers more effectively than conventional nonprecoded CE-OFDM. The general constraint on spectral precoding is developed to ensure that the power spectral sidelobes of the spectrally precoded CE-OFDM block signal with arbitrary data statistics decay asymptotically as f(-2J-2). Some spectral codes previously found for spectrally precoded OFDM are shown to meet the constraint and thus suited for spectrally precoded CE-OFDM. Specifically, spectral performance is analyzed for the spectrally precoded CE-OFDM block signal with independent and identically distributed data to illustrate the prevailing spectral advantage. The corresponding receiver is also developed to demodulate the spectrally precoded CE-OFDM block signal over dispersive channels.
Keyword:
Orthogonal frequency-division multiplexing
constant envelope
spectral precoding
sidelobe suppression
frequency-domain equalization
期刊
IF:
8.3
论文数:
1.2W
被引数:
3.6W
机构
引用论文
Finite-alphabet based channel estimation for OFDM and related multicarrier systemsOFDM及相关多载波系统中基于有限字母表的信道估计
PREAI
分享收藏Coherent and differentially coherent detections of orthogonally multiplexed orthogonal phase-modulated signals正交复用正交相位调制信号的相干和差分相干检测
PREAI
分享收藏ACCF/AHA/SCAI 2007 Update of the Clinical Competence Statement on Cardiac Interventional Procedures
PREAI
分享收藏The French version of the Gilles de la Tourette Syndrome Quality of Life Scale for adolescents (GTS-QOL-French-Ado): Adaptation and psychometric evaluation.png)
PLOS ONEOAAI
PLOS ONEIF0
OAAI分享收藏分享收藏
查看更多内容