scholarly journals Reliability-aware subcarrier mapping strategy of QC-LDPC encoded symbols in bandwidth-limited IM/DD OFDM systems

2021 ◽  
Author(s):  
Wei Zhang ◽  
Zhaoquan Fan ◽  
Jian Zhao
Keyword(s):  
Ofdm Systems ◽  
Mapping Strategy ◽  
Subcarrier Mapping

Efficient technique for PAPR and BER Reduction in Downlink Large Scale MU-MIMO-OFDM System

2020 ◽  
Vol 10 ◽  
Author(s):  
Jagtar Singh ◽  
Deepak Kedia
Keyword(s):  
Large Scale ◽  
Mimo System ◽  
Ofdm Systems ◽  
Matlab Simulation ◽  
Ofdm System ◽  
Significant Extent ◽  
Modulation Techniques ◽  
Mimo Ofdm ◽  
Subcarrier Mapping ◽  
Simulation Results

Background & Objective:: Background & Objective: Result:: In this work, we propose to perform jointly multiuser MMSE precoding, SC-IFDMA and antenna reservation technique to reduce the PAPR and bit error rate (BER) of the large MU-MIMO system. To show the effectiveness of the proposed scheme in the reduction of PAPR with different modulation techniques, subcarriers, and subcarrier mapping schemes the results are compared with the existing OFDM based large MU-MIMO system. Conclusion:: The MATLAB simulation results confirm that our proposed combination of MMSE MU-precoding, SC-IFDMA and antenna reservation technique is able to reduce PAPR and BER to a significant extent for LS-MU-MIMO-OFDM systems.

Joint Blind Estimation of Channel Length and Noise Variance in OFDM Systems

2011 ◽  
Vol E94-B (12) ◽  
pp. 3614-3617
Author(s):  
Bin SHENG ◽  
Pengcheng ZHU ◽  
Xiaohu YOU
Keyword(s):  
Channel Length ◽  
Blind Estimation ◽  
Ofdm Systems ◽  
Noise Variance

Pilot Cluster ICI Suppression in OFDM Systems Based on Coded Symbols

2018 ◽  
Vol E101.B (11) ◽  
pp. 2320-2330
Author(s):  
Yong DING ◽  
Shan OUYANG ◽  
Yue-Lei XIE ◽  
Xiao-Mao CHEN
Keyword(s):  
Ofdm Systems

PTS-Based PAPR Reduction by Iterative p-Norm Minimization without Side Information in OFDM Systems

2018 ◽  
Vol E101.B (3) ◽  
pp. 856-864 ◽  
Author(s):  
Moeko YOSHIDA ◽  
Hiromichi NASHIMOTO ◽  
Teruyuki MIYAJIMA
Keyword(s):  
Side Information ◽  
Papr Reduction ◽  
Ofdm Systems ◽  
Norm Minimization
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