Browsing by Keywords "Communication channels (information theory)"
Now showing items 120 of 29

Autofocused spotlight SAR image reconstruction of offgrid sparse scenes
(Institute of Electrical and Electronics Engineers Inc., 2017)Synthetic aperture radar (SAR) has significant role in remote sensing. Phase errors due to uncompensated platform motion, measurement model mismatch, and measurement noise can cause degradations in SAR image reconstruction. ... 
Broadcast erasure channel with feedback: The two multicast caseAlgorithms and bounds
(IEEE, 2013)We consider the single hop broadcast packet erasure channel (BPEC) with two multicast sessions (each of them destined to a different group of N users) and regularly available instantaneous receiver ACK/NACK feedback. Using ... 
Capacity bounds for an ultrawideband channel model
(IEEE, 200410)There is an ongoing effort by the IEEE 802.15.3a subcommittee to reach a UWB personal area network standard. We estimate the achievable rates for such networks using a channel model specified by the same group. The analysis ... 
Communication efficient channel estimation over distributed networks
(IEEE, 2014)We study diffusion based channel estimation in distributed architectures suitable for various communication applications such as cognitive radios. Although the demand for distributed processing is steadily growing, these ... 
Costefficient approximation of linear systems with repeated and multichannel filtering configurations
(IEEE, 199805)It is possible to obtain either exact realizations or useful approximations of linear systems or matrixvector products arising in many different applications, by synthesizing them in the form of repeated or multichannel ... 
Decentralized stabilization: characterization of all solutions and genericity aspects
(Taylor & Francis, 1992)Electrical and The decentralized stabilization problem of multivariable finitedimensional systems is considered in a fractional setup. A new synthesis procedure for decentralized stabilizing compensators is proposed. The ... 
Decoding strategies at the relay with physicallayer network coding
(Institute of Electrical and Electronics Engineers, 2012)A twoway relay channel is considered where two users exchange information via a common relay in two transmission phases using physicallayer network coding (PNC). We consider an optimal decoding strategy at the relay to ... 
A delaytolerant asynchronous twowayrelay system over doublyselective fading channels
(Institute of Electrical and Electronics Engineers Inc., 2015)We consider design of asynchronous orthogonal frequency division multiplexing (OFDM) based diamond twowayrelay (DTWR) systems in a timevarying frequencyselective (doublyselective) fading channel. In a DTWR system, two ... 
Input sequence estimation and blind channel identification in HF communication
(IEEE, 2000)A new algorithm is proposed for reliable communication over HF tropospheric links in the presence of rapid channel variations. In the proposed approach, using fractionally space channel outputs, sequential estimation of ... 
Joint sourcechannel coding and guessing
(IEEE, 19970607)We consider the joint sourcechannel guessing problem, define measures of optimum performance, and give singleletter characterizations. As an application, sequential decoding is considered. 
Joint sourcechannel coding and guessing with application to sequential decoding
(Institute of Electrical and Electronics Engineers, 199809)We extend our earlier work on guessing subject to distortion to the joint sourcechannel coding context. We consider a system in which there is a source connected to a destination via a channel and the goal is to reconstruct ... 
Large deviations of probability rank
(IEEE, 2000)Consider a pair of random variables (X,Y) with distribution P. The probability rank function is defined so that G(xy) = 1 for the most probable outcome x conditional on Y = y, G(xy) = 2 for the second most probable ... 
A lowcomplexity timedomain MMSE channel estimator for spacetime/frequency blockcoded OFDM systems
(Hindawi Publishing Corporation, 2006)Focusing on transmit diversity orthogonal frequencydivision multiplexing (OFDM) transmission through frequencyselective channels, this paper pursues a channel estimation approach in time domain for both spacefrequency ... 
Mode separation and direction of arrival estimation in HF links
(WileyBlackwell Publishing, 2003)Estimation of arrival angles and incoming signals is a challenging problem for HF channels where the signals are correlated and the separation between the signals can be as low as a couple of degrees. In this paper, a new ... 
Multiresampling Doppler compensation in cooperative underwater OFDM systems
(IEEE, 2013)We consider a multicarrier cooperative underwater acoustic communication (UWAC) system and investigate the Doppler scaling problem arising due to the motion of different nodes. Specifically, we assume an orthogonal frequency ... 
Multiperson tracking with a network of ultrawideband radar sensors based on gaussian mixture PHD filters
(Institute of Electrical and Electronics Engineers Inc., 2015)In this paper, we investigate the use of Gaussian mixture probability hypothesis density filters for multiple person tracking using ultrawideband (UWB) radar sensors in an indoor environment. An experimental setup consisting ... 
Noncoherent spacetime coding: an algebraic perspective
(IEEE, 200506)The design of spacetime signals for noncoherent blockfading channels where the channel state information is not known a priori at the transmitter and the receiver is considered. In particular, a new algebraic formulation ... 
Nondataaided channel estimation for OFDM systems with spacefrequency transmit diversity
(Institute of Electrical and Electronics Engineers, 2006)This paper proposes a computationally efficient nondataaided maximum a posteriori (MAP) channelestimation algorithm focusing on the spacefrequency (SF) transmit diversity orthogonal frequency division multiplexing (OFDM) ... 
Nonthermal Quantum Channels as a Thermodynamical Resource
(American Physical Society, 2015)Quantum thermodynamics can be understood as a resource theory, whereby thermal states are free and the only allowed operations are unitary transformations commuting with the total Hamiltonian of the system. Previous ... 
On secrecy rate analysis of spatial modulation and space shift keying
(IEEE, 2015)Spatial modulation (SM) and space shift keying (SSK) represent transmission methods for lowcomplexity implementation of multipleinput multipleoutput (MIMO) wireless systems in which antenna indices are employed for data ...