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Interference minimization in physical model of wireless networks
interference wireless networks graph connectivity set cover randomized rounding
2011/10/9
Abstract: Interference minimization problem in wireless sensor and ad-hoc networks is considered. That is to assign a transmission power to each node of a network such that the network is connected an...
An Analytical Model for the Intercell Interference Power in the Downlink of Wireless Cellular Networks
Intercell interference power statistical modeling wireless networks Rayleigh fading lognormal shadowing
2011/9/16
Abstract: In this paper, we propose a methodology for estimating the statistics of the intercell interference power in the downlink of a multicellular network. We first establish an analytical express...
The Bethe Permanent of a Non-Negative Matrix
Bethe approximation Bethe permanent graph cover partition function perfect matching permanent sumproduct algorithm
2011/9/16
Abstract: It has recently been observed that the permanent of a non-negative square matrix, i.e., of a square matrix containing only non-negative real entries, can very well be approximated by solving...
Accelerating Lossless Data Compression with GPUs
Accelerating Lossless Data GPUs Information Theory Graphics
2011/8/30
Abstract: Huffman compression is a statistical, lossless, data compression algorithm that compresses data by assigning variable length codes to symbols, with the more frequently appearing symbols give...
The Sender-Excited Secret Key Agreement Model: Capacity and Error Exponents
Secret key capacity Common randomness Wiretap channel Sender-excitation Reliability exponent Secrecy exponent
2011/9/16
Abstract: We consider fundamental limits of the secret key generation problem when the sources are randomly excited by the sender and there is a noiseless public discussion channel. In many practical ...
Achieving a vanishing SNR-gap to exact lattice decoding at a subexponential complexity
SNR-gap subexponential complexity Information Theory
2011/9/15
Abstract: The work identifies the first lattice decoding solution that achieves, in the general outage-limited MIMO setting and in the high-rate and high-SNR limit, both a vanishing gap to the error-p...
Prescient Beamforming by Primary Transmitters in Interweave Cognitive Radio Networks with a Single Primary Receiver
Cognitive radios spectrum sensing interference mitigation beamforming dirty-paper coding
2011/9/15
Abstract: This work investigates a fundamentally novel interweave cognitive radio network where the primary transmitter takes a proactive approach towards improving the accuracy of the spectrum sensin...
Finding Non-overlapping Clusters for Generalized Inference Over Graphical Models
Graphical Models Markov Random Fields Belief Propagation Loopy Belief Propagation Generalized Belief Propagation Block-Trees Block-Graphs
2011/10/9
Abstract: Graphical models compactly capture stochastic dependencies amongst a collection of random variables using a graph. Inference over graphical models corresponds to finding marginal probability...
Mathematical Programming Decoding of Binary Linear Codes: Theory and Algorithm
Integer programming LP decoding Mathematical programming ML decoding Polyhedral theory
2011/9/14
Abstract: Mathematical programming is a branch of applied mathematics and has recently been used to derive new decoding approaches, challenging established but often heuristic algorithms based on iter...
GPS Signal Acquisition via Compressive Multichannel Sampling
GPS compressive sensing spread spectrum analog compressed sensing
2011/9/14
Abstract: In this paper, we propose an efficient acquisition scheme for GPS receivers. It is shown that GPS signals can be effectively sampled and detected using a bank of randomized correlators with ...
Abstract: The purpose of this paper is to detail the article of Carlet. Along the way I recall some interesting results in the theory of finite fields, I give (new) proofs of some known results, and t...
Heterogeneous Cellular Networks with Flexible Cell Association: A Comprehensive Downlink SINR Analysis
Heterogeneous Cellular Networks Flexible Cell Association Comprehensive Downlink SINR Analysis
2011/9/14
Abstract: In this paper we develop a tractable framework for SINR analysis in downlink heterogeneous cellular networks (HCNs) with flexible cell association policies. The HCN is modeled as a multi-tie...
Achieving "Massive MIMO" Spectral Efficiency with a Not-so-Large Number of Antennas
Channel training downlink scheduling frequency reuse inter-cell cooperation large-system analysis
2011/9/15
Abstract: The main focus and contribution of this paper is a novel network-MIMO TDD architecture that achieves spectral efficiencies comparable with "Massive MIMO", with one order of magnitude fewer a...
Snake-in-the-Box Codes for Rank Modulation
Snake-in-the-box codes rank modulation permutations flash memory
2011/9/13
Abstract: Motivated by the rank-modulation scheme with applications to flash memory, we consider Gray codes capable of detecting a single error, also known as snake-in-the-box codes. We study two erro...
A Generalized Poor-Verdu Error Bound for Multihypothesis Testing and the Channel Reliability Function
Hypothesis testing probability of error maximum-a-posteriori and maximum likelihood estimation channel coding
2011/9/14
Abstract: A lower bound on the minimum error probability for multihypothesis testing is established. The bound, which is expressed in terms of the cumulative distribution function of the tilted poster...