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Average Capacity Maximization via Channel Switching in the Presence of Additive White Gaussian Noise Channels and Switching Delays

Ahmet Dundar Sezer, Sinan Gezici
2016 IEEE Transactions on Wireless Communications  
The optimal channel switching problem is studied for average capacity maximization in the presence of additive white Gaussian noise channels and channel switching delays.  ...  In addition, the maximum average capacity achieved by the optimal channel switching strategy is formulated as a function of the channel switching delay parameter and the average and peak power limits.  ...  Average Capacity Maximization via Channel Switching in the Presence of Additive White Gaussian Noise Channels and Switching Delays Ahmet Dundar Sezer, Student Member, IEEE, and Sinan Gezici, Senior Member  ... 
doi:10.1109/twc.2016.2582150 fatcat:ij4xkt5qrzcypoackrmvy74sk4

Optimal channel switching in multiuser systems under average capacity constraints

Ahmet Dundar Sezer, Sinan Gezici
2017 Digital signal processing (Print)  
In this paper, the optimal channel switching problem is studied for average capacity maximization in the presence of multiple receivers in the communication system.  ...  First, the optimal channel switching problem is proposed for average capacity maximization of the communication between the transmitter and the secondary receiver while fulfilling the minimum average capacity  ...  In [1] , the optimal power allocation strategy is derived for capacity maximization over a fading additive white Gaussian noise (AWGN) channel in the presence of perfect channel state information (CSI  ... 
doi:10.1016/j.dsp.2017.01.008 fatcat:ad4kq7bobbgmbpx7veaigdfffm

Influence of Excess 1/f Noise on Channel Capacity

Dominik Strzałka, Franciszek Grabowski, Rzeszów University of Technology
2009 Complex Systems  
This paper deals with new analytical and experimental aspects of a channel's capacity in the presence of excess nonwhite Gaussian noise with long-range dependencies described by the Hurst parameter H.  ...  We suggest that in many cases the real capacity of the whole channel can no longer be determined by Shannon's equation without taking into account the problem of excess 1 ë f noise, which appears as an  ...  Channel Capacity in the Presence of Excess 1 ê f Noise Many statements in the literature say that information is the same as entropy.  ... 
doi:10.25088/complexsystems.18.2.255 fatcat:whfj7fgj4ndvjf7byv4btnjbaq

Analysis of impulsive UWB modulation on a real MV test network

Andrea M. Tonello, Fabio Versolatto, Carlo Tornelli
2011 2011 IEEE International Symposium on Power Line Communications and Its Applications  
We study the statistics of the MV channels in terms of both root-mean-square delay spread (RMS-DS) and average channel gain (ACG).  ...  We also consider the effect on achievable rate and bit-error-rate of the signalling bandwidth, and I-UWB modulation duty cycle.  ...  The MV background noise can be referred to as stationary additive Gaussian colored background noise.  ... 
doi:10.1109/isplc.2011.5764389 fatcat:3ljedc6r7ffjzfqqwhq3md445m

Defeating the Eavesdropper: On the Achievable Secrecy Capacity using Reconfigurable Antennas [article]

Ahmed M. Alaa
2014 arXiv   pre-print
In this paper, we consider the transmission of confidential messages over slow fading wireless channels in the presence of an eavesdropper.  ...  A reconfigurable antenna can switch its propagation characteristics over time and thus it perceives different fading channels.  ...  transmitted from Alice to Bob via a rayleigh fading channel γ n M = {γ n M (1), . . . , γ n M (n)}, and Additive White Gaussian Noise (AWGN) = {n n M (1), . . . , n n M (n)}, where n n M (i) ∼ CN (0, 1  ... 
arXiv:1402.0993v1 fatcat:tvvunyi5djdprfesiveff63ccy

Adaptive Switching Hybrid Blast-STBC MIMO System

Mohammed Salemdeeb, Ammar Abu-Hudrouss
2021 Journal of Engineering Research and Reports  
The proposed ASHS system shows a lot of advantages such as maximum throughput is obtained in bad channel states, no additional transmit power is needed and no additional bandwidth is needed.  ...  Fading in a wireless channel has negative effects on the performance of communication systems.  ...  In the ideal case, when each path is considered statistically independent and in the presence of Additive White Gaussian Noise (AWGN) n, the received signal vector r=[r 1 , r 2 , r 3 ,..., .r M ] T can  ... 
doi:10.9734/jerr/2021/v20i1017396 fatcat:msbmmdgb7rdxhc5lykzlsnrb7a

Spectrum Sensing Via Reconfigurable Antennas: Fundamental Limits and Potential Gains [article]

Ahmed M. Alaa, Mahmoud H. Ismail, Hazim Tawfik
2014 arXiv   pre-print
Moreover, state selection can be applied to boost the capacity of SU transmission.  ...  We propose a novel paradigm for spectrum sensing in cognitive radio networks that provides diversity and capacity benefits using a single antenna at the Secondary User (SU) receiver.  ...  The additive white noise is n i ∼ CN (0, 1).  ... 
arXiv:1403.0930v1 fatcat:vtixee2zs5awjiwdxlgeo4uvom

Adaptive PSAM accounting for channel estimation and prediction errors

Xiaodong Cai, G.B. Giannakis
2005 IEEE Transactions on Wireless Communications  
While pilot symbols facilitate channel acquisition, they consume part of transmitted power and bandwidth, which in turn, reduces spectral efficiency.  ...  In this paper, we first analyze the effect linear minimum mean square error (MMSE) channel estimation and prediction errors have on bit-error rate (BER).  ...  The authors would like to thank the anonymous reviewers for their careful reading and critique of the manuscript. Their comments and suggestions improved the presentation of this paper.  ... 
doi:10.1109/twc.2004.840200 fatcat:dwtajyhwvvfs5hnek3wpjdme4m

Spectrum sensing via reconfigurable antennas: fundamental limits and potential gains

Ahmed M. Alaa, Mahmoud H. Ismail, Hazim Tawfik
2015 Telecommunications Systems  
Moreover, state selection can be applied to boost the capacity of SU transmission.  ...  Moreover, state selection can be applied to boost the capacity of SU transmission.  ...  The additive white noise is n i ∼ CN (0, 1).  ... 
doi:10.1007/s11235-015-0096-4 fatcat:4qcijqaddbfmrpqafqchfsjf5a

Secrecy Outage Probability of Modified TAS/Alamouti-STBC Schemes under Pilot Contamination Attacks

Ahmet Faruk Coşkun
2019 Sakarya University Journal of Science  
The exact expressions of the SOP for the M-TAS/Alamouti-STBC schemes in Rayleigh fading channels have been derived and validated via Monte Carlo simulations.  ...  in the secrecy rates of wireless communications systems in the presence of PCAs.  ...  Besides, terms of the average energy per symbol ( ) and the one-sided power spectral densities of the additive white Gaussian noise (AWGN) ( , and , ) at each receiver antenna of Bob and Eve, respectively  ... 
doi:10.16984/saufenbilder.453314 fatcat:66k4aoy4w5f4vduebng5arpyzq

Analog Space–Time Coding for Multiantenna Ultra-Wideband Transmissions

L. Yang, G.B. Giannakis
2004 IEEE Transactions on Communications  
Space-time coding (STC), on the other hand, has gained popularity as an effective means of boosting rates and performance.  ...  We show that the resulting analog system is able to collect not only the spatial diversity, but also the multipath diversity inherited by the dense multipath channel, with either coherent or noncoherent  ...  white Gaussian noise (AWGN) with zero mean, and variance .  ... 
doi:10.1109/tcomm.2004.823644 fatcat:srpvtucxb5cvldnwnpv2k45tpa

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
Although the Gaussian signal is capacity-achieving, signals conforming to discrete constellations are transmitted in practical communication systems.  ...  , 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

Breaking Spectrum Gridlock With Cognitive Radios: An Information Theoretic Perspective

A. Goldsmith, S.A. Jafar, I. Maric, S. Srinivasa
2009 Proceedings of the IEEE  
We provide a comprehensive summary of the known capacity characterizations in terms of upper and lower bounds for each of these three approaches.  ...  This side information typically comprises knowledge about the activity, channels, codebooks and/or messages of other nodes with which the cognitive node shares the spectrum.  ...  Message W 2 T 1 T 2 R 1 R 2 Message W 1 These results have been specialized to the interference channel with additive white Gaussian noise.  ... 
doi:10.1109/jproc.2009.2015717 fatcat:rvnkortxtneb7loisy6ceeriwy

Joint Optimal Channel Assignment and Congestion Control for Multi-channel Wireless Mesh Networks

A. Mohsenian Rad, Vincent Wong
2006 2006 IEEE International Conference on Communications  
In this paper, we formulate the Joint Optimal Channel Assignment and Congestion Control (JOCAC) as a decentralized utility maximization problem with constraints that arise from the interference of the  ...  The aggregate capacity of wireless mesh networks can be increased by the use of multiple channels. Stationary wireless routers are equipped with multiple network interface cards (NICs).  ...  ACKNOWLEDGMENT This work was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC) under grant number STPGP 269872-03.  ... 
doi:10.1109/icc.2006.255061 dblp:conf/icc/RadW06 fatcat:5h65xqvy7jamvkzs5nwovqrcim

On the Capacity of MIMO Broadband Power Line Communications Channels [article]

Nir Shlezinger, Roee Shaked, Ron Dabora
2018 arXiv   pre-print
BB-PLC channels are characterized by a dominant colored non-Gaussian additive noise, as well as by periodic variations of the channel impulse response and the noise statistics.  ...  In this work we study the fundamental rate limits for BB-PLC channels by bounding their capacity while accounting for the unique properties of these channels.  ...  Note thatH G,W and C G , defined in (9) , correspond to the entropy rate of a Gaussian noise process, and to the capacity of a channel with additive Gaussian noise, respectively.  ... 
arXiv:1805.06911v1 fatcat:e4bfttdwtvaenllqgzscouhqbe
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