2015/1
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Recent Submissions
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ARQ Protocols in Cognitive Decode-and-Forward Relay Networks: Opportunities Gain
(Společnost pro radioelektronické inženýrství, 2015-04)In this paper, two novel automatic-repeat-request (ARQ) based protocols were proposed, which exploit coop- eration opportunity inherent in secondary retransmission to create access opportunities. If the signal was not ... -
Objective Evaluation Criteria for Shooting Quality of Stereo Cameras over Short Distance
(Společnost pro radioelektronické inženýrství, 2015-04)Stereo cameras are the basic tools used to obtain stereoscopic image pairs, which can lead to truly great image quality. However, some inappropriate shooting conditions may cause discomfort while viewing stereo images. It ... -
A New MCMC Sampling Based Segment Model for Radar Target Recognition
(Společnost pro radioelektronické inženýrství, 2015-04)One of the main tools in radar target recognition is high resolution range profile (HRRP). However, it is very sensitive to the aspect angle. One solution to this problem is to assume the consecutive samples of HRRP ... -
ISI Cancellation Using Blind Equalizer Based on DBC Model for MIMO-RFID Reader Reception
(Společnost pro radioelektronické inženýrství, 2015-04)Under the dyadic backscatter channel (DBC) model, a conventional zero forcing (ZF) and minimum mean square error (MMSE) method for MIMO-RFID reader reception are not able to be rapidly cancelled inter-symbol interference ... -
Joint Dynamic Radio Resource Allocation and Mobility Load Balancing in 3GPP LTE Multi-Cell Network
(Společnost pro radioelektronické inženýrství, 2015-04)Load imbalance, together with inefficient utilization of system resource, constitute major factors responsible for poor overall performance in Long Term Evolution (LTE) network. In this paper, a novel scheme of joint dynamic ... -
An Improved Variable Structure Adaptive Filter Design and Analysis for Acoustic Echo Cancellation
(Společnost pro radioelektronické inženýrství, 2015-04)In this research an advance variable structure adaptive Multiple Sub-Filters (MSF) based algorithm for single channel Acoustic Echo Cancellation (AEC) is proposed and analyzed. This work suggests a new and improved direction ... -
Copyright Protection of Color Imaging Using Robust-Encoded Watermarking
(Společnost pro radioelektronické inženýrství, 2015-04)In this paper we present a robust-encoded watermarking method applied to color images for copyright protection, which presents robustness against several geometric and signal processing distortions. Trade-off between ... -
New Negentropy Optimization Schemes for Blind Signal Extraction of Complex Valued Sources
(Společnost pro radioelektronické inženýrství, 2015-04)Blind signal extraction, a hot issue in the field of communication signal processing, aims to retrieve the sources through the optimization of contrast functions. Many contrasts based on higher-order statistics such as ... -
Multiproduct Uniform Polar Quantizer
(Společnost pro radioelektronické inženýrství, 2015-04)The aim of this paper is to reduce the complexity of the unrestricted uniform polar quantizer (UUPQ), keeping its high performances. To achieve this, in this paper we propose the multiproduct uniform polar quantizer (MUPQ), ... -
Direction-of-Arrival Estimation Based on Sparse Recovery with Second-Order Statistics
(Společnost pro radioelektronické inženýrství, 2015-04)Traditional direction-of-arrival (DOA) estimation techniques perform Nyquist-rate sampling of the received signals and as a result they require high storage. To reduce sampling ratio, we introduce level-crossing (LC) ... -
Fuzzy Chance-constrained Programming Based Security Information Optimization for Low Probability of Identification Enhancement in Radar Network Systems
(Společnost pro radioelektronické inženýrství, 2015-04)In this paper, the problem of low probability of identification (LPID) improvement for radar network systems is investigated. Firstly, the security information is derived to evaluate the LPID performance for radar network. ... -
A Fast DOA Estimation Algorithm Based on Polarization MUSIC
(Společnost pro radioelektronické inženýrství, 2015-04)A fast DOA estimation algorithm developed from MUSIC, which also benefits from the processing of the signals' polarization information, is presented. Besides performance enhancement in precision and resolution, the proposed ... -
Statistical Multirate High-Resolution Signal Reconstruction Using the EMD-IT Based Denoising Approach
(Společnost pro radioelektronické inženýrství, 2015-04)The reconstruction problem of a high-resolution (HR) signal from a set of its noise-corrupted low-resolution (LR) versions is considered. As a part of this problem, a hybrid method that consists of four operation units is ... -
Efficient Spectral Power Estimation on an Arbitrary Frequency Scale
(Společnost pro radioelektronické inženýrství, 2015-04)The Fast Fourier Transform is a very efficient algorithm for the Fourier spectrum estimation, but has the limitation of a linear frequency scale spectrum, which may not be suitable for every system. For example, audio and ... -
Fast Implementation of Transmit Beamforming for Colocated MIMO Radar
(Společnost pro radioelektronické inženýrství, 2015-04)Multiple-input Multiple-output (MIMO) radars benefit from spatial and waveform diversities to improve the performance potential. Phased array radars transmit scaled versions of a single waveform thereby limiting the transmit ... -
Signal Detection for QPSK Based Cognitive Radio Systems using Support Vector Machines
(Společnost pro radioelektronické inženýrství, 2015-04)Cognitive radio based network enables opportunistic dynamic spectrum access by sensing, adopting and utilizing the unused portion of licensed spectrum bands. Cognitive radio is intelligent enough to adapt the communication ... -
Level Crossing Rate of Macrodiversity System in the Presence of Multipath Fading and Shadowing
(Společnost pro radioelektronické inženýrství, 2015-04)Macrodiversity system including macrodiversity SC receiver and two microdiversity SC receivers is considered in this paper. Received signal experiences, simultaneously, both, long term fading and short term fading. ... -
Pipelined Two-Operand Modular Adders
(Společnost pro radioelektronické inženýrství, 2015-04)Pipelined two-operand modular adder (TOMA) is one of basic components used in digital signal processing (DSP) systems that use the residue number system (RNS). Such modular adders are used in binary/residue and residue/binary ... -
Design of Passive Analog Electronic Circuits Using Hybrid Modified UMDA algorithm
(Společnost pro radioelektronické inženýrství, 2015-04)Hybrid evolutionary passive analog circuits synthesis method based on modified Univariate Marginal Distribution Algorithm (UMDA) and a local search algorithm is proposed in the paper. The modification of the UMDA algorithm ... -
A 1.2 V and 69 mW 60 GHz Multi-channel Tunable CMOS Receiver Design
(Společnost pro radioelektronické inženýrství, 2015-04)A multi-channel receiver operating between 56 GHz and 70 GHz for coverage of different 60 GHz bands worldwide is implemented with a 90 nm Complementary Metal-Oxide Semiconductor (CMOS) process. The receiver containing an ...
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