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On the Impact of Imperfect Cophasing in Uncoded and LDPC-Coded EGC Receivers over Generalized Fading Channels

Goran T. Djordjevic, Ivan B. Djordjevic, George K. Karagiannidis
2009 2009 IEEE Wireless Communications and Networking Conference  
The proposed LDPC code does not exhibit the error floor phenomena, in the region of interest, even in the presence of imperfect cophasing and receiver unbalances.  ...  Furthermore, we design large girth quasi-cyclic LDPC code with high code rate, suitable for use in communications over generalized fading channels.  ...  Symbol and bit log-likelihood ratios calculation The samples of in-phase and quadrature channels are forwarded to the a posteriori probability (APP) demapper, which determines the symbol log-likelihood  ... 
doi:10.1109/wcnc.2009.4917856 dblp:conf/wcnc/DjordjevicDK09 fatcat:suexfhgfgbcl7e7tuaisuqgbyi

Dual Polarized Modulation and Reception for Next Generation Mobile Satellite Communications

Pol Henarejos, Ana Perez-Neira
2015 IEEE Transactions on Communications  
By using dual polarized antennas in the transmitter and receiver, the PMod technique achieves an improvement in throughput of up to 100% with respect to existing deployments, with an increase of less than  ...  Demodulation (i.e. detection and decoding) alternatives, with different processing complexity and performance, are studied.  ...  Imperfect Channel Estimation In this section we analyse the impact of an imperfect channel estimation.  ... 
doi:10.1109/tcomm.2015.2461221 fatcat:2u2vxzlcwbd5bdwwaja2tymtwy

2005 index

2005 IEEE Communications Letters  
Yong Yuan, + , COML Jun 05 481-483 arbitrary wedge-shaped region of MPSK syst., presence of quadrature error, probab.  ...  Management of channelization codes at the forward link of WCDMA; COML Aug 05 679-681 Rovatti, R., see Mazzini, G., COML Mar 05 264-266 Rugini, L., P. Banelli, and S. Cacopardi.  ...  Information rates adaptive RateLimit for 1xEV-DO reverse link traffic channels, rate control scheme BSased. HyeJeong Lee  ... 
doi:10.1109/lcomm.2005.1576594 fatcat:upvkv2oloze3jos34ny6hs6ove

Spatial Modulation

R.Y. Mesleh, H. Haas, S. Sinanovic, Chang Wook Ahn, Sangboh Yun
2008 IEEE Transactions on Vehicular Technology  
In addition, we show that SM achieves better performance in all studied channel conditions, as compared with other techniques.  ...  Spatial modulation (SM) is a recently developed transmission technique that uses multiple antennas.  ...  McDonough, who was the former vice chair of the Electrical Engineering Pro-gram, APL Submarine Technology Department, John Hopkins University, for his very useful comments.  ... 
doi:10.1109/tvt.2007.912136 fatcat:vjyi76hu3ra5lirg5uxuqgw72a

Dispensing with Channel Estimation…

Mohammed El-Hajjar, Lajos Hanzo
2010 IEEE Vehicular Technology Magazine  
in a better performance than the coherently detected systems in the presence of imperfect channel estimation.  ...  In the presence of CFO, differential schemes fail to decode the received signal reliably, and so the idea of double-differential schemes was shown to provide a reliable detection while dispensing with  ... 
doi:10.1109/mvt.2010.936644 fatcat:4upccvs73fc3ne4emulfvhdawq

2018 IndexIEEE Wireless Communications LettersVol. 7

2018 IEEE Wireless Communications Letters  
., +, LWC June 2018 472-475 Estimation of Rician K-Factor in the Presence of Nakagami-m Shadowing for the LoS Component.  ...  ., +, LWC April 2018 162-165 Gaussian processes Estimation of Rician K-Factor in the Presence of Nakagami-m Shadowing for the LoS Component.  ... 
doi:10.1109/lwc.2018.2888676 fatcat:olfvetmkt5bt3c572e5y76b5pm

A Survey on MIMO Transmission with Discrete Input Signals: Technical Challenges, Advances, and Future Trends [article]

Yongpeng Wu, Chengshan Xiao, Zhi Ding, Xiqi Gao, Shi Jin
2017 arXiv   pre-print
Multiple antennas have been exploited for spatial multiplexing and diversity transmission in a wide range of communication applications.  ...  , and MIMO wiretap channel.  ...  For continuous-time scalar channel with additive Gaussian/Possion noise in the presence of feedback, the relationships between the directed information and the causal estimation error are established in  ... 
arXiv:1704.07611v1 fatcat:4gep4gnbefdytjdggniocdora4

Tight Upper Bound Performance of Full-Duplex MIMO-BICM-IDD Systems in the Presence of Residual Self-Interference

Mohamad A. Ahmed, Charalampos C. Tsimenidis
2018 IEEE Transactions on Wireless Communications  
Furthermore, bit-interleaved coded modulation is considered in the presence of additive white Gaussian noise over MIMO frequency non-selective Rayleigh fading channels.  ...  Furthermore, we validate our results by deriving a tight upper bound on the performance of the proposed system using rate-1/2 convolutional codes together with M-ary quadrature amplitude modulation, which  ...  A modified turbo-BLAST with OFDM has been considered in [15] based on soft-PIC and MMSE filtering for the MIMO frequency selective fading channel and in the presence of imperfect channel estimation.  ... 
doi:10.1109/twc.2017.2768027 fatcat:qqg35726qbfvzmwehgofd6t4vy

Performance of Multicarrier CDMA With Successive Interference Cancellation in a Multipath Fading Channel

J.G. Andrews, T.H.Y. Meng
2004 IEEE Transactions on Communications  
It is found that the capacity of the coded system approaches the additive white Gaussian noise capacity for SIC, even in a fading multipath channel with channel estimation error.  ...  Multicarrier code-division multiple access (MC-CDMA) is used to suppress multipath and to overcome the multipath channel estimation problem in single-carrier SIC systems.  ...  Kim, and the anonymous reviewers, whose comments greatly improved the content and quality of the paper.  ... 
doi:10.1109/tcomm.2004.826240 fatcat:tvo2mrgpqzctjb6ust2wvq73ce

Performance Analysis of Full-Duplex-MRC-MIMO With Self-Interference Cancellation Using Null-Space-Projection

Mohamad A. Ahmed, Charalampos C. Tsimenidis, Anas F. Al Rawi
2016 IEEE Transactions on Signal Processing  
The performance of the system is investigated in the presence of additive white Gaussian noise (AWGN) over Rayleigh fading channels.  ...  Comparison of the obtained results with relevant state-of-the-art techniques suggests significant improvements in the SINR figures and system capacity.  ...  ACKNOWLEDGMENT The authors would like to thank the Research Council for funding. No new data were created during this study.  ... 
doi:10.1109/tsp.2016.2540611 fatcat:i5rdvxyjj5c2xpniau5wdaleuu

Virtual Spatial Channel Number and Index Modulation

Zahid Iqbal, Fei Ji, Yun Liu, Xiaojie Wang
2021 Wireless Communications and Mobile Computing  
The asymptotic performance is also analyzed, which gives the coding gain and diversity order and describes error floor under the consideration of perfect and imperfect channel estimation, respectively.  ...  Considering the influence of imperfect channel estimation, a closed-form upper bound is derived on average bit error probability (ABEP).  ...  The idea of PSM is applied in dual-hop hybrid SM (DH-HSM) [29] which uses the concept of spatial modulation in a dual-hop decode and forward protocol to convey information via multiple relays.  ... 
doi:10.1155/2021/2982226 fatcat:dvluj46zbjgwjhho3ce6fd3424

A Survey on Design and Performance of Higher-Order QAM Constellations [article]

Praveen Kumar Singya, Parvez Shaik, Nagendra Kumar, Vimal Bhatia
2020 arXiv   pre-print
In the existing publications and in various communication standards, initially square quadrature amplitude modulation (SQAM) constellations (even power of 2) were considered.  ...  As the research on beyond 5G heats up, we survey and explore power and bandwidth efficient modulation schemes in details.  ...  In [247] , authors investigated the performance of space time codes based MIMO system over Rayleigh fading channels with adaptive modulation by considering imperfections in channel estimation.  ... 
arXiv:2004.14708v1 fatcat:okupeb57cnaa3kjf3gyzhludde

2019 Index IEEE Transactions on Communications Vol. 67

2019 IEEE Transactions on Communications  
., +, TCOMM Aug. 2019 5403-5418 Performance Analysis of Matched-Filter Detector for MIMO Spatial Multiplexing Over Rayleigh Fading Channels With Imperfect Channel Estimation.  ...  ., +, TCOMM Jan. 2019 124-139 Amplitude modulation Compressive Sensing Assisted Generalized Quadrature Spatial Modulation for Massive MIMO Systems.  ...  S Satellite antennas On the Performance of LMS  ... 
doi:10.1109/tcomm.2019.2963622 fatcat:qd6so3reavde3eiukfknmpbfsu

High Capacity Transmission Systems Using Homogeneous Multi-Core Fibers

Benjamin J. Puttnam, Ruben S. Luis, Erik Agrell, Georg Rademacher, Jun Sakaguchi, Werner Klaus, George M. Saridis, Yoshinari Awaji, Naoya Wada
2017 Journal of Lightwave Technology  
We then describe a series of experiments and demonstrations of system features including self-homodyne detection and joint spatial super-channel modulation before discussing their suitability to high-capacity  ...  We first describe the key fiber properties that can affect transmission, such as inter-core crosstalk and the variation of propagation delay between cores, and the consequences of these properties on spatial  ...  Additional evidence of imperfect PNC in the L-band is shown in the measurement of the relative penalty of SHD compared with ID as shown in Fig. 6 (c) and 6(d) for the same C and L-band channels respectively  ... 
doi:10.1109/jlt.2017.2669207 fatcat:cmwonxvvsfduxk4lrvso5sqwyi

On the Symbol Error Probability of STBC-NOMA with Timing Offsets and Imperfect Successive Interference Cancellation

Muhammad Waseem Akhtar, Syed Ali Hassan, Haejoon Jung
2021 Electronics  
The simulation results show that the performance of STBC-NOMA was degraded significantly with an increase in the imperfection of SIC and timing errors and that traditional orthogonal access schemes, such  ...  In this paper, we study the symbol error probability (SEP) performance of the STBC-NOMA and derive the asymptotic expression for SEP when the network is impaired with imperfect SIC (ipSIC) and timing offsets  ...  The authors in [19] analyzed the performance of a decode-and-forward CNOMA assuming Nakagami-m fading channels.  ... 
doi:10.3390/electronics10121386 fatcat:sc5edqamazcwxlcsuswcjyf2oe
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