Investigation of Non-Overlapping Time-Domain Windowing for OOB Radiation Reduction of OFDM System

2019 ◽  
Author(s):  
Amro Lulu ◽  
Ammar M Abu-Hudrouss
Keyword(s):  
Time Domain ◽  
Ofdm System ◽  
Radiation Reduction

Time Domain Synchronous OFDM System for Optical Fiber Communications

2018 ◽  
Author(s):  
Chenxin Jing ◽  
Xianfeng Tang ◽  
Xiaoguang Zhang ◽  
Lixia Xi ◽  
Wenbo Zhang
Keyword(s):  
Optical Fiber ◽  
Time Domain ◽  
Optical Fiber Communications ◽  
Ofdm System ◽  
Fiber Communications

Time-domain clustered transmit power adaptation for OFDM system in fading channels

2006 ◽  
Vol 7 (2) ◽  
pp. 135-140
Author(s):  
Xiao-ying Gan ◽  
You-yun Xu ◽  
Yun-feng Guan ◽  
Wen-tao Song
Keyword(s):  
Fading Channels ◽  
Time Domain ◽  
Ofdm System ◽  
Transmit Power ◽  
Power Adaptation

scholarly journals A Novel Timing and Frequency Offset Estimation Algorithm for Filtered OFDM System

2020 ◽  
Author(s):  
Xingle Feng ◽  
Mengjie Wang ◽  
Li Chen ◽  
Wenxia Zhu ◽  
Kun Hua
Keyword(s):  
Frequency Domain ◽  
Time Domain ◽  
Frequency Offset ◽  
Training Sequence ◽  
Spectrum Efficiency ◽  
Estimation Accuracy ◽  
Timing Synchronization ◽  
Ofdm System ◽  
Pn Sequence ◽  
Training Symbol

Abstract As a critical technology of 5G air interface waveform, F-OFDM not only inherits the technical advantages of OFDM, but also has outstanding advantages in system flexibility and spectrum efficiency. However, as a multi-carrier technology, it is still extremely sensitive to sample timing offset (STO) and carrier frequency offset (CFO). In this letter, an improved Park frequency domain training sequence (FS-Park) is proposed to complete STO and CFO estimation of F-OFDM system. Firstly, a real-value pseudorandom number (PN) sequence is sent to each subcarrier as training sequence in frequency domain, the corresponding time domain training symbol has a conjugate symmetry structure. Secondly, the training symbol is utilized for timing synchronization, then the fractional frequency offset is estimated based on the cyclic prefix in time domain. Finally, the integer frequency offset is estimated in frequency domain based on the auto-correlation of PN sequence. The simulation results illustrate that the FS-Park algorithm not only has a single pulse timing metric curve and great STO estimation accuracy, but also has better performance of CFO estimation than classical Park algorithm and Liang Xiao's method.

scholarly journals Channel Estimation Enhancement in OFDM System based on Time Domain interpolation

2014 ◽  
Vol 97 (11) ◽  
pp. 8-12
Author(s):  
Mahdi AbdulHadi ◽  
Omar Almukhtar Tawfeeq
Keyword(s):  
Channel Estimation ◽  
Time Domain ◽  
Ofdm System
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