Filters








1,310 Hits in 5.4 sec

On probabilistic data association for achieving near-exponential diversity over fading channels

Atulya Yellepeddi, Kyeong Jin Kim, Chunjie Duan, Philip Orlik
2013 2013 IEEE International Conference on Communications (ICC)  
(SISO) channel, precoding, probabilistic data association (PDA) algorithm, ordered-PDA.  ...  Machine-to-Machine (M2M) wireless communication requires the transmission of short blocks of data with high reliability over fading channels.  ...  However, with the PRPP precoder and LAS detector, a block size of 400 symbols or more was required to achieve near-exponential diversity.  ... 
doi:10.1109/icc.2013.6655449 dblp:conf/icc/YellepeddiKDO13 fatcat:sw63kwze45hupe3fkrhof6idze

Massive MIMO Wireless Networks: An Overview

Noha Hassan, Xavier Fernando
2017 Electronics  
productivity systems) and Ryerson University for their help and support in developing this paper.  ...  Acknowledgments: We would like to express our sincere thanks and appreciation to PBE Canada (PBE is a global international heavy industries technology company for manufactured safety, communications and  ...  It has the ability of quickly find near-optimal solutions [5] . Low-complexity MIMO uses detection based on probabilistic data association.  ... 
doi:10.3390/electronics6030063 fatcat:7mtjqladxfhaddeuvsr2ftf3by

Achieving near-exponential diversity on uncoded low-dimensional MIMO, multi-user and multi-carrier systems without transmitter CSI

Ramesh Annavajjala, Philip V. Orlik
2011 2011 Information Theory and Applications Workshop  
In this paper, we propose a novel approach to achieve reliability close to the AWGN channel for uncoded transmissions on SISO frequency-flat Rayleigh fading channels without Tx-CSI.  ...  In this paper, we propose a novel approach to achieve reliability close to the AWGN channel for uncoded transmissions on SISO frequency-flat Rayleigh fading channels without Tx-CSI.  ...  Simon Pun and Raymond Yim for valuable discussions, and Dr. Jinyun Zhang for encouragement and support.  ... 
doi:10.1109/ita.2011.5743560 dblp:conf/ita/AnnavajjalaO11 fatcat:nbvjoubue5dp3b76xa5iwd6zgq

Genetic algorithm assisted joint multiuser symbol detection and fading channel estimation for synchronous CDMA systems

Kai Yen, L. Hanzo
2001 IEEE Journal on Selected Areas in Communications  
Using computer simulations, we showed that the proposed receiver can achieve a near-optimum bit-error-rate (BER) performance upon assuming perfect channel estimation at a significantly lower computational  ...  A novel multiuser code division multiple access (CDMA) receiver based on genetic algorithms is considered, which jointly estimates the transmitted symbols and fading channel coefficients of all the users  ...  ACKNOWLEDGMENT The authors are grateful for the constructive critique by the anonymous reviewers.  ... 
doi:10.1109/49.926355 fatcat:hl6fqc7wojdwxnn23pdjseazla

Error Rate Improvement in Underwater MIMO Communications Using Sparse Partial Response Equalization

S. Roy, T.M. Duman, V.K. McDonald
2009 IEEE Journal of Oceanic Engineering  
We have demonstrated a reduction in error rates over receiver algorithms using conventional decision feedback equalization techniques due to increased multipath diversity.  ...  in both data rate and reliability and is a promising technology for enhancing communications in the band-limited and highly-dynamic underwater acoustic (UWA) channel.  ...  For coded transmission, the sPRE+BP structure is followed by a soft input, soft output channel decoder which exchanges probabilistic information with the sPRE+BP block (turbo equalization) and achieves  ... 
doi:10.1109/joe.2009.2014658 fatcat:h557jh7jjng4fkdrhftmwddnli

Error Rate Improvement in Underwater MIMO Communications Using Sparse Partial Response Equalization

Subhadeep Roy, Tolga Duman, Vincent McDonald
2006 OCEANS 2006  
We have demonstrated a reduction in error rates over receiver algorithms using conventional decision feedback equalization techniques due to increased multipath diversity.  ...  in both data rate and reliability and is a promising technology for enhancing communications in the band-limited and highly-dynamic underwater acoustic (UWA) channel.  ...  For coded transmission, the sPRE+BP structure is followed by a soft input, soft output channel decoder which exchanges probabilistic information with the sPRE+BP block (turbo equalization) and achieves  ... 
doi:10.1109/oceans.2006.307063 fatcat:ymz7gkflnvf3zndraz3noagkvi

Fundamentals of Wireless Communications [chapter]

2006 Next Generation Wireless Systems and Networks  
More generally, the processes { hn [i]} n have the same statistics for different n's.  ...  We discuss the impact of channel measurement error and noncoherent diversity combining in Section 3.5. Time Diversity Time diversity is achieved by averaging the fading of the channel over time.  ...  In short, data is transmitted to a user when its channel is near its own peaks.  ... 
doi:10.1002/0470024569.ch2 fatcat:pwvdrx7kqvbwzoaftosigsfz2e

Coded Cooperation in Wireless Communications: Space-Time Transmission and Iterative Decoding

M. Janani, A. Hedayat, T.E. Hunter, A. Nosratinia
2004 IEEE Transactions on Signal Processing  
To address this limitation, the concept of cooperation diversity has been introduced, where mobiles achieve uplink transmit diversity by relaying each other's messages.  ...  Instead of a simple repetition relay, coded cooperation partitions the codewords of each mobile and transmits portions of each codeword through independent fading channels.  ...  For Case 4, we have and so that again, we only have diversity order one. 2) Fast Fading: For fast fading, the fading coefficients are no longer constant over the codeword but are i.i.d. across the coded  ... 
doi:10.1109/tsp.2003.821100 fatcat:z6ylz536srbkvmi5t3wpznzyae

Low-complexity near-MAP decoding of large non-orthogonal STBCs using PDA

Saif K. Mohammed, A. Chockalingam, B. Sundar Rajan
2009 2009 IEEE International Symposium on Information Theory  
In this paper, we present a probabilistic data association (PDA) based algorithm for decoding non-orthogonal STBCs with large dimensions.  ...  for a given number of transmit antennas) as well as full transmit diversity.  ...  In this paper, we present a probabilistic data association (PDA) based algorithm for decoding large non-orthogonal STBCs from CDA.  ... 
doi:10.1109/isit.2009.5205683 dblp:conf/isit/MohammedCR09 fatcat:5knxvfuetvalflk2sjzy3wtyie

Low-Complexity Detection in Large-Dimension MIMO-ISI Channels Using Graphical Models

Pritam Som, Tanumay Datta, N. Srinidhi, A. Chockalingam, B. Sundar Rajan
2011 IEEE Journal on Selected Topics in Signal Processing  
In this paper, we deal with low-complexity near-optimal detection/equalization in large-dimension multiple-input multiple-output inter-symbol interference (MIMO-ISI) channels using message passing on graphical  ...  A key contribution in the paper is the demonstration that near-optimal performance in MIMO-ISI channels with large dimensions can be achieved at low complexities through simple yet effective simplifications  ...  Rayleigh fading channel realizations are generated for different data frames, and channel gains are held constant over one data frame of channel uses.  ... 
doi:10.1109/jstsp.2011.2166950 fatcat:pb56snpogvfbvpulkrulbwtt5u

Caching Placement in Stochastic Wireless Caching Helper Networks: Channel Selection Diversity via Caching

Seong Ho Chae, Wan Choi
2016 IEEE Transactions on Wireless Communications  
For given channel fading and network geometry, both channel selection diversity and network interference dynamically vary according to what and how the caching helpers cache at their finite storage space  ...  Content delivery success in wireless caching helper networks depends mainly on cache-based channel selection diversity and network interference.  ...  as the load of the tagged caching helper with the largest channel power gain averaged over fading (i.e., the load based on the association with long-term channel power gains),N ins i ≈N i .  ... 
doi:10.1109/twc.2016.2586841 fatcat:li3axl72e5en5mdy7swtl3itkq

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.  ...  an exponentially increasing demand for wireless data services.  ... 
arXiv:1704.07611v1 fatcat:4gep4gnbefdytjdggniocdora4

Adaptive Multi User Detection for FD-MC-CDMA in Presence of CFO

Guntu. Nooka Raju, B.Prabhakara Rao
2014 International Journal of Wireless and Microwave Technologies  
The main targets of multi-carrier direct sequence code division multiple access (MC-DS-CDMA) mobile communication systems are to overcome the multi-path fading influences as well as the near-far effect  ...  Genetic algorithm provides a more robust and efficient approach for solving complex real world problem such as multi user detection, but genetic algorithms are not computationally efficient.  ...  In the proposed scheme at the receiver non data aided SNR detector proposed in [9] is utilized to estimate SNR in block fading channel.  ... 
doi:10.5815/ijwmt.2014.04.04 fatcat:wd37afo5svgdlnhpenmckzzmni

Throughput Scaling of Wireless Networks With Random Connections

Shengshan Cui, Alexander M Haimovich, Oren Somekh, H Vincent Poor, Shlomo Shamai
2010 IEEE Transactions on Information Theory  
fading models.  ...  and multihop) schemes; 2) the 2( 1 2 ) throughput scaling is achievable for a specific connection model by a two-hop opportunistic relaying scheme, which employs full, but only local channel state information  ...  ACKNOWLEDGMENT The authors wish to thank the Associate Editor Dr. R.  ... 
doi:10.1109/tit.2010.2051470 fatcat:dln2ycsxfvew7dlleijj3xrhda

Throughput Scaling of Wireless Networks With Random Connections

S. Cui, A. M. Haimovich, O. Somekh, H. V. Poor, S. Shamai
2009 2009 IEEE International Conference on Communications  
fading models.  ...  (and multihop) schemes. 2) The Θ (n^1/2) throughput scaling is achievable for a specific connection model by a two-hop opportunistic relaying scheme, which employs full, but only local channel state information  ...  ACKNOWLEDGMENT The authors wish to thank the Associate Editor Dr. R.  ... 
doi:10.1109/icc.2009.5199528 dblp:conf/icc/CuiHSPS09 fatcat:zuugopkiwvarjeyot7vuq5fbde
« Previous Showing results 1 — 15 out of 1,310 results