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Modulation and demodulation for cooperative diversity in wireless systems

Deqiang Chen, J.N. Laneman
2006 IEEE Transactions on Wireless Communications  
This paper develops a general framework for maximum likelihood (ML) demodulation in cooperative wireless communication systems.  ...  Piecewise-linear demodulators are proposed as an accurate approximation of the nonlinear ML detectors for coherent and noncoherent decode-and-forward (DF).  ...  In addition, noncoherent modulation and demodulation are robust methods for realizing control signaling in wireless networks.  ... 
doi:10.1109/twc.2006.1673090 fatcat:m235ozlvsjce5camxbefajxary

Distributed Spatial Modulation based Cooperative Diversity Scheme

Quang-Trung Hoang
2018 International Journal of Wireless & Mobile Networks  
In this paper, a distributed spatial modulation based cooperative diversity scheme for relay wireless networks is proposed.  ...  Where, the space-time block code is exploited to integrate with distributed spatial modulation. Therefore, the interested transmission scheme achieves high diversity gain.  ...  Acknowledgment This paper was supported by the School of Information and Communication Technology -Thai Nguyen University in Vietnam under Project: T2017-07-17.  ... 
doi:10.5121/ijwmn.2018.10203 fatcat:57ojdfrq5ffglkn5s322t6mnmu

Cooperative Stepwise Relaying and Combining for Multihop Vehicular Wireless Communication

Yi Zhu, Lixing Song, Shaoen Wu, Honggang Wang, Chonggang Wang
2015 IEEE Transactions on Vehicular Technology  
This paper proposes a novel cooperative scheme named Cooperative Step-wise Relaying and Combining (CSRC) for multihop wireless networks, which utilizes low-order demodulations to patricianly demodulate  ...  high-order modulated signal cooperatively at intermediate relay nodes.  ...  The authors would thank the support from the US National Science Foundation through the grants #1041292 and #1041095 to perform this work.  ... 
doi:10.1109/tvt.2014.2346031 fatcat:qrlkegzmwbgfdesurb7l2qmafu

Distributed modulation for cooperative wireless communications

Hongbin Li, Qiang Zhao
2006 IEEE Signal Processing Magazine  
W e examine the modulation and signal processing aspect of communications assisted by cooperative relay nodes in wireless ad hoc networks.  ...  All these factors present unique challenges in the design and analysis of cooperative wireless communication systems.  ...  The purpose of this article is to provide an overview of distributed modulation for cooperative wireless systems.  ... 
doi:10.1109/msp.2006.1708410 fatcat:63yhfyhxgjaw3hzssloyuyo5nu

Cooperative Binary Relaying and Combining for multi-hop wireless communication

Yi Zhu, Chong Tang, Lixing Song, Qingmei Yao, Shaoen Wu
2012 2012 IEEE Global Communications Conference (GLOBECOM)  
This paper proposes a novel cooperative scheme called Cooperative Binary Relaying and Combining (CBRC) for multi-hop wireless networking systems where the nodes cooperatively demodulate high-order modulated  ...  Cooperative communication can achieve diversity gain and increase the channel capacity.  ...  In this paper, we propose a novel cooperative strategy called Cooperative Binary Relaying and Combining (CBRC) for multi-hop wireless networking systems that partially demodulates the signal symbol with  ... 
doi:10.1109/glocom.2012.6503777 dblp:conf/globecom/ZhuTSYW12 fatcat:e2tzqlo7rna7zawyi2f7cnxgta

Cooperative Cdd Scheme Based On Adaptive Modulation In Wireless Communication System

Seung-Jun Yu, Hwan-Jun Choi, Hyoung-Kyu Song
2014 Zenodo  
Among spatial diversity scheme, orthogonal space-time block code (OSTBC) and cyclic delay diversity (CDD) have been widely studied for the cooperative wireless relaying system.  ...  In this paper, we propose a cooperative cyclic delay diversity (CDD) scheme that use hierarchical modulation at the source and adaptive modulation based on cyclic redundancy check (CRC) code at the relays  ...  In particular, the proposed cooperative scheme guarantees reliable transmission for low SNR. Fig. 1 1 Fig. 1 Dual-hop cooperative wireless system  ... 
doi:10.5281/zenodo.1336394 fatcat:ulz3hao2ubglhoocy7tj3da5q4

Cooperative Cdd Scheme Based On Hierarchical Modulation In Ofdm System

Seung-Jun Yu, Yeong-Seop Ahn, Young-Min Ko, Hyoung-Kyu Song
2015 Zenodo  
In this paper, we propose a cooperative cyclic delay diversity (CDD) scheme that use hierarchical modulation. This scheme is free from the rate loss and allows seamless cooperative communication.  ...  In order to achieve high data rate and increase the spectral efficiency, multiple input multiple output (MIMO) system has been proposed. However, multiple antennas are limited by size and cost.  ...  INTRODUCTION OR next generation wireless systems offering high quality multimedia services, a wireless communication system which combats with impairments in the severe wireless environment is required  ... 
doi:10.5281/zenodo.1108657 fatcat:5sndkuzmwneztbhcy47s24iag4

Implementation of cooperative communications using software defined radios

Michael Knox, Elza Erkip
2010 2010 IEEE International Conference on Acoustics, Speech and Signal Processing  
Cooperative communications leverages the spatial diversity available in a wireless network enabling multiple radio nodes work together to improve the overall system performance.  ...  The measured results include cooperative systems operating with a maximum ratio combining technique and two cooperative coded systems using hard decision decoding.  ...  Figure 1 . 1 WARP SDR system configuration for Cooperative Figure 2 . 2 Measured BER for the direct, multi-hop and MRC for demodulate-and-forward cooperative techniques Figure 4 . 4 Measured BER performance  ... 
doi:10.1109/icassp.2010.5495252 dblp:conf/icassp/KnoxE10 fatcat:qa2qxuc4n5acberdwzgfvuecwm

Multicell Cooperation and MIMO Technologies for Broadcasting and Broadband Communications

Hongxiang Li, Lingjia Liu, Guoqing Li, Younsun Kim, Jinyun Zhang
2010 International Journal of Digital Multimedia Broadcasting  
The seventh paper "Phase-shift cyclic-delay diversity for MIMO OFDM systems" by Y.  ...  The wireless industry is experiencing an unprecedented increase in the number and sophistication of broadcasting and broadband communication systems.  ...  Acknowledgments The authors are grateful to the reviewers for their invaluable work and to the authors of the papers collected in this special issue.  ... 
doi:10.1155/2010/848527 fatcat:ddc3zker4jg23ahpbngehyum2u

Distributed Cooperation and Diversity for Hybrid Wireless Networks

Yin Wang, G. Noubir
2013 IEEE Transactions on Mobile Computing  
In this paper, we propose a new Distributed Cooperation and Diversity Combining framework.  ...  We propose a Priority Maximum-Ratio Combining (PMRC) for pre-demodulation combining, a post soft-demodulation combining, and a decode-and-forward technique.  ...  Diversity and cooperation, as general mechanisms to improve the robustness and efficiency of wireless communication systems, have been studied for many years [2] [3] [4] , but very little research has  ... 
doi:10.1109/tmc.2012.38 fatcat:smvtdrjcyvb4hiqzducevz32yu

A Novel Chaotic Modulation Scheme in a Cooperative Relaying System

K. Thilagam, K. Jayanthi
2013 International Journal of Computer Applications  
In recent years, the demand for new-generation wireless networks has spurred research on cooperative communication, a powerful physical layer technique to combat fading in wireless relaying scenario.  ...  The novel CS-QCSK scheme is implemented in the nodes of the cooperative relaying system to upgrade the system performance.  ...  The modulation diversity scheme for uncoded cooperative communication in wireless networks with DF protocol and the power allocation factor for performance improvement in the system have been portrayed  ... 
doi:10.5120/13273-0783 fatcat:ed2pc4xyzrek3ebxyz4pgqhyxi

Performance of differential modulation with wireless relays in Rayleigh fading channels

Qiang Zhao, Hongbin Li
2005 IEEE Communications Letters  
We propose a new amplify-and-forward scheme amenable to differential modulation for cooperative systems with wireless relays.  ...  An asymptotic analysis reveals that the proposed cooperative scheme with one relay offers a diversity order approaching two in Rayleigh fading channels as the average SNR increases.  ...  CONCLUSIONS We have introduced a new amplify-and-forward relay scheme for differential modulation/demodulation in cooperative wireless systems.  ... 
doi:10.1109/lcomm.2005.1413628 fatcat:mesdu4yluvh5jbhdbvppkmcrzu

Network Coded Distributed Spatial Modulation for Relay Networks

Amir Shehni, Mark F. Flanagan
2018 2018 25th International Conference on Telecommunications (ICT)  
Abstract-Distributed spatial modulation (DSM) is a cooperative diversity protocol for a wireless network, whereby communication from a source to a destination is aided by multiple intermediate relays.  ...  Cooperative communication has been established as a promising technology for future wireless networks [5] , [6] .  ... 
doi:10.1109/ict.2018.8464899 dblp:conf/ict/ShehniF18 fatcat:goo7ai6qxvhevheqyqlkabgsvu

A Review on Cooperative Diversity Techniques Bypassing Channel Estimation [article]

Sylvia Ong Ai Ling, Hushairi Zen, Al-Khalid B Hj Othman, Mahmood Adnan, Olalekan Bello
2017 arXiv   pre-print
This article presents a review of the differential transmission techniques for cooperative diversity networks.  ...  However, transmission of information in wireless channels is primarily impaired by deleterious multipath fading, which affects the quality and reliability of the system.  ...  cooperative diversity system.  ... 
arXiv:1711.10643v1 fatcat:3mvfsakmv5a45mb6lpwzh7zu54

Analysis, Modelling and Simulation of Co-operative OFDM System to implement Amplify and Forward transmission in wireless Relay Communications

Anuja Shirke, S.V. Patil
2017 International Journal of Current Research and Academic Review  
Furthermore, OFDM is one of the main techniques proposed to be employed in 4th Generation Wireless Systems. Therefore, it is crucial to understand the concepts behind OFDM.  ...  In this paper it is given an overview of the basic principles on which this modulation scheme is based with fundamental results using 4-QAM & QPSK using AWGN, Rayleigh and rician channels.  ...  We review the OFDM system and Cooperative techniques which used in the wireless communication.  ... 
doi:10.20546/ijcrar.2017.501.010 fatcat:3i7amawtujcrrf6dvywezm3dia
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