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On behalf of all the members of the Organizing Committee, I would like to welcome you to the 5th International Conference on Signal Processing and Telecommunication Systems, ICSPCS'2011. The ICSPCS conferences evolved from the series of successful symposia and workshops, i.e. International Symposia on DSP and Communication Systems (DSPCS), and Workshops on the Internet, Telecommunications and Signal...
Cyber-attacks appear in the headlines almost daily and The Economist has asserted that cyberspace is the fifth warfare domain. State of the art wireless technologies such as Bluetooth, RFID, 3G/4G cellular, and Wi-Fi have all been comprised to some degree or another. The President of the United States has declared cyber security as “one of the most serious… national security challenges we face as...
It is our sad duty to report the untimely death of Prof. Dr. Marek E. Bialkowski, who passed away on Thursday, October 27, 2011 after a short unexpected illness caused by pneumonia. He was a remarkable researcher and a mentor and friend to many us and he will be greatly missed.
In this paper, low complexity time delay estimation (TDE) method based on data matrix partitioning is proposed. The dimension of signal subspace was increased by stacking data matrices for performance improvement of TDE. Increment of the size of data matrix causes high computational complexity of TDE. The proposed algorithm, which only requires propagator with smaller data matrix than original data...
In this paper, a block-constrained trellis coded vector quantization (BC-TCVQ) algorithm is combined with an algebraic codebook to produce an algebraic trellis vector code (ATVC) to be used in ACELP coding. In ATVC, the set of allowed algebraic codebook pulse position is expanded, and the trellis branches are labeled with these subsets. Viterbi algorithm is used to select the excitation codevector...
In high-speed mobile OFDM communication systems, the receiving characteristics are degraded bably by channel time variation. Our solution is to rotate a circular array antenna so as to decrease the speed of the receiving antenna relative to the ground. Moreover, the BER characteristics with the parameters of ISBD-T, which are a standard of Japanese digital terrestrial television broadcasting, were...
In this work we study the performance of five good interleavers using short frame size (N=256). The comparative study is in terms of the BER, interleaver spread factor, and free distance. The novelty of this work is that we emphasized the study of these interleavers in order to have a desired properties guide to select a specific interleaver when we work into a puncturing scheme, short frame size...
In this paper, we propose a new method that use side view video pre-processing with DWT-SVD based water-marking scheme. This processing switch the video references of the frames with dimensions equivalent of the number of frames like width and the same height than the original video. The DWT-SVD watermarking is applied in this video using a grayscale image inserted in Y(luminance) of the YUV. The...
A method of monitoring the speech quality of a Voice-over-IP call is described in this paper. This method is attractive because it employs the ITU-T standard P.862 for Perceptual Evaluation of Speech Quality which is well-known for its accuracy. In addition, with the proposed method, call quality is monitored without interfering with the call while it is in progress. The results corresponding to an...
The integer frequency offset (IFO) is typically estimated in the frequency domain using a differentially encoded training sequence. This paper proposes IFO estimation method for IEEE 802.15.4g Smart Utility Networks (SUN) applications of MR-OFDM PHY. This IFO estimation method uses the transmitted pilot at each multiple of subcarrier spacing which is used to measure the fractional frequency offset...
In this paper, we provide a new approach in ultra short pulse or ultra Wideband (UWB) radars based on a Fourier series with time-varying coefficients resulting in a second-order cyclostationary characteristics for low-mobility target and almost cyclostationary characteristics in moving target scenario. We also provide a new method for detection based on detecting the presence of cyclostationarity...
In order to improve error performance of data storage, this paper presents a code-design algorithm for a class of structured quasi-cyclic low-density parity-check (SQC-LDPC) codes with high rate ( R >= 0.9 ) and long-length (104 < n). In the design of parity-check matrix, optimized degree distribution pairs are obtained based on the combination of density evolution and differential evolution...
In this paper, we propose a novel low-power listening scheme that is comprised of non-deterministic preamble sampling periods and demonstrate how the mean of these sampling periods can be varied through the use of a preamble sampling probability parameter. This is in contrast to the existing literature which treats the preamble sampling periods as deterministic and seeks to vary them directly using...
In this paper, we propose a lattice-reduction-aided MIMO receiver with virtual channel detection. The proposed receiver provides high-speed data transmission in downlink mobile communications by using lattice-reduction and a concept of virtual channel to increase the number of multiplexed signal streams that can be detected at the receiver. Numerical simulation shows that the receiver achieves bit...
This paper proposes an optimal training design for an amplify-and-forward (AF) relay system in which the source, relay and destination are all equipped with multiple antennas. Examined is the scenario when spatial correlation exists among the multiple antennas employed at each node in the system and such information is properly taken into account in the training design. The training design problem...
Symbol-error rate expressions of selection combining over the two-wave with diffused power (TWDP) fading channel are derived using the moment-generating function approach. The TWDP fading model is characterized by two specular waves in the presence of other diffused waves and has both the Rayleigh and Rician fading channels as special cases. The TWDP fading model is applicable to both the narrow-band...
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