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A new fuzzy rough sets based on fuzzy coverings
Rough set Fuzzy covering Fuzzy covering information system Homomorphism Attribute reduction
2012/4/17
This paper provides further study on fuzzy coverings based rough sets. We first present the notions of the lower and upper approximation operators based on fuzzy coverings and derive their basic prope...
MIMO Z Channel Interference Management
Z Channel Alamouti Codes MIMO Interference Cancellation Complexity Co-channel Interference
2012/4/17
MIMO Z Channel is investigated in this paper. We focus on how to tackle the interference when different users try to send their codewords to their corresponding receivers while only one user will caus...
Unique Decoding of Plane AG Codes Revisited
Unique Decoding Plane AG Codes Revisited Information Theory
2012/4/17
We reformulate a recently introduced interpolation-based unique decoding algorithm of algebraic geometry codes using the theory of Gr\"obner bases of modules on the coordinate ring of the base curve. ...
Blind Null-space Tracking for MIMO Underlay Cognitive Radio Networks
Blind Null-space MIMO Cognitive Radio Networks Information Theory
2012/4/17
Blind Null Space Learning (BNSL) has recently been proposed for fast and accurate learning of the null-space associated with the channel matrix between a secondary transmitter and a primary receiver. ...
Cooperation is viewed as a key ingredient for interference management in wireless systems. This paper shows that cooperation has fundamental limitations. The main result is that even full cooperation ...
Coding Scheme for Optimizing Random I/O Performance
Coding Scheme Optimizing Random I/O Performance
2012/3/1
Flash memories intended for SSD and mobile applications need to provide high random I/O performance. This requires using efficient schemes for reading small chunks of data (e.g. 0.5KB - 4KB) from rand...
Principal Component Pursuit with Reduced Linear Measurements
Principal Component Pursuit Reduced Linear Measurements low-rank matrix sparse matrix
2012/3/1
In this paper, we study the problem of decomposing a superposition of a low-rank matrix and a sparse matrix when a relatively few linear measurements are available. This problem arises in many data pr...
Square Root Law for Communication with Low Probability of Detection on AWGN Channels
Square Root Law Communication Low Probability Detection AWGN Channels
2012/3/1
We present a square root limit on low probability of detection (LPD) communication over additive white Gaussian noise (AWGN) channels. Specifically, if a warden has an AWGN channel to the transmitter ...
Delay-limited Source and Channel Coding of Quasi-Stationary Sources over Block Fading Channels: Design and Scaling Laws
Outage capacity quasi-stationary source outage distortion source and channel coding
2012/2/29
In this paper, delay-limited transmission of quasi-stationary sources over block fading channels are considered. Considering distortion outage probability as the performance measure, two source and ch...
Precoder Design for Multi-antenna Partial Decode-and-Forward (PDF) Cooperative Systems with Statistical CSIT and MMSE-SIC Receivers
Precoder Design Multi-antenna Partial Decode-and-Forward Cooperative Systems Statistical CSIT MMSE-SIC Receivers
2012/2/29
Cooperative communication is an important technology in next generation wireless networks. Aside from conventional amplify-and-forward (AF) and decode-and-forward (DF) protocols, the partial decode-an...
Monobit Digital Receivers for QPSK: Design, Analysis and Performance
Monobit Digital Receivers QPSK Design Analysis and Performance
2012/2/29
Future communication system requires large bandwidth to achieve high data rate up to multigigabit/ sec, which makes analog-to-digital (ADC) become a key bottleneck for the implementation of digital re...
Approaching Capacity at High-Rates with Iterative Hard-Decision Decoding
Approaching Capacity High-Rates Iterative Hard-Decision Decoding
2012/2/29
A variety of low-density parity-check (LDPC) ensembles have now been observed to approach capacity with message-passing decoding. However, all of them use soft (i.e., non-binary) messages and a poster...
Classification of poset-block spaces admitting MacWilliams-type identity
Classification poset-block spaces admitting MacWilliams-type identity
2012/3/1
In this work we prove that a poset-block space admits a MacWilliams-type identity if and only if the poset is hierarchical and at any level of the poset, all the blocks have the same dimension. When t...
The mutual information of bit-interleaved coded modulation (BICM) systems, sometimes called the BICM capacity, is investigated at low signal-to-noise ratio (SNR), i.e., in the wideband regime. A new l...
Interference Alignment for Partially Connected MIMO Cellular Networks
Interference Alignment Partially Connected MIMO Cellular Networks
2012/2/29
In this paper, we propose an iterative interference alignment (IA) algorithm for MIMO cellular networks with partial connectivity, which is induced by heterogeneous path losses and spatial correlation...