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This paper presents a Two Layer Artificial Neural Network (2LANN) model for linearization of pico-cell power amplifiers which output approximately 2W or less. Towards the goal of realizing efficient real-time pre-distortion hardware, optimization of the 2LANN model is done based on hardware considerations. The parameters of our proposed 2LANN model are obtained by measuring the wideband inputs and...
A new pipeline architecture for H.264/AVC deblocking filter is proposed. A high-throughput implementation is derived by exploiting specific properties of the algorithm. The proposed filter engine needs 108 cycles to filter a macroblock (MB), while in 90nm technology the achieved frequency and the demanded area are 750MHz and 26.1 Kgates, respectively. The proposed architecture outperforms the existing...
Inertial navigation systems used to weigh several pounds, which would be a detriment to systems such as unmanned aerial vehicles (UAVs). Such weight of the inertial naviagation system would reduce the weight allocation for powerful sensor payloads that are desired in the UAVs. Without an inertial navigation system, however, a UAV can have its GPS navigation spoofed. In this paper, a dynamic system...
Shape parameter estimation procedures for generalized Gaussian distribution are considered. It is shown that the existing estimators can be divided into four groups: maximum likelihood algorithm; moment-based methods; entropy matching estimators and global convergence algorithm. Besides, properties of two recently introduced estimators of shape parameter are discussed. They are based on the combination...
This paper proposes a separate quintic polynomial trajectory for each sub phase of gait cycle to achieve smooth human-like walking. A biped robot with active hip, knee and ankle joints is considered here for human legs like appearance and walking performance. Trajectory planning is done on the basis of experimental flexion angle, velocity and acceleration data of three joint movements i.e. hip, knee...
In this paper, an ac-linked hybrid electrical energy system comprising of photo voltaic (PV) and fuel cell (FC) with electrolyzer for standalone applications is proposed. PV is the primary power source of the system, and an FC-electrolyzer combination is used as a backup and as long-term storage system. A Fuzzy Logic controller is developed for the maximum power point tracking for the PV system. A...
We present a finite-blocklength analysis of the throughput and the average delay achievable in a wireless system where i) several uncoordinated users transmit short coded packets, ii) interference is treated as noise, and iii) 1-bit feedback from the intended receivers enables the use of a simple automatic repeat request (ARQ) protocol. Our analysis exploits the recent results on the characterization...
In this paper a two-staged pipelined architecture of the new SHA-3 (Keccak) algorithm is presented. The core can operate on both one-block and multi-block messages, realizing all possible modes of Keccak. Special effort has been paid and different design alternatives have been studied to derive efficient FPGA implementations in terms of throughput and throughput/area metrics. The proposed core has...
A new, online, evolving video segmentation algorithm is presented in this paper. The proposed method segments each video frame using an evolving Gaussian mixture model (GMM) whose adaptive coefficient is automatically adjusted to cater for abrupt changes between consecutive frames. The proposed method is tested against another algorithm, which keeps the adaptive coefficient constant. The comparison...
This paper presents a new efficient detection method on capacitive touch screens by mixing multi-channel inputs and expanding the sensing bandwidth. Multi-channel touch signals can be combined with a modulation scheme which allows an overlap in spectral domain. By expanding the sensing bandwidth, the overlapped region can be minimized which leads to more accurate detection. The touch-detection problem...
We propose a waveform power allocation technique for a set of clusters of radars in a radar network using a game theoretic method. Each cluster consists of a number of radars forming a MIMO configuration. There is no communication between the clusters in the network, hence the power allocation in the radars within each cluster is performed using a non-cooperative game theoretic technique. The aim...
A cooperative power control scheme is proposed for heterogeneous cellular networks to improve the throughput of the users connected to low transmission power cells, e.g., femto-or pico cells. The proposed scheme dynamically reduces the transmission power of the dominating interfering macro base station, to effectively increase the SINR conditions of the users connected to the low power cells. The...
The Interfering Broadcast Channel (IBC) applies to the downlink of cellular and heterogenous networks, which are limited by multi-user interference. The interference alignment (IA) concept has shown that interference does not need to be inevitable. In particular spatial IA in MIMO IBC allows for low latency and requires little diversity. However, IA requires perfect and typically global Channel State...
Licensed shared access (LSA) is a recently proposed concept for spectrum sharing which is based on authorized schemes of rights for secondary networks ensuring predictable performance to the incumbent network. In this paper, a secondary system (SS) employing an opportunistic beamforming technique with user scheduling is assumed to coexist with a primary system (PS). The proposed technique exploits...
The problem of batch generation of orthonormal Hermite-Gaussian-like eigenvectors separately for each eigenspace of the DFT matrix F is reconsidered. The singular value decomposition (SVD) technique is applied to a matrix whose columns are nonorthogonal eigenvectors lying in one eigenspace. Moreover this key matrix is allowed to be rank-deficient which necessitates the adoption of the notion of matrix...
Information about the spatial local mean signal values is used as a control information in many practical aspects of digital communications. However, there are just few analytical papers that give recommendations for the signal samples postprocessing (in post-Rayleigh channels only), which should enable us to estimate these local mean values accurately. In this paper, the most general recommendations...
In recent years, computer vision community has devoted efforts on the recognition of basic-level categories. On the other hand, finegrained object recognition which targets at recognizing objects belonging to the same basic-level class, is a more challenging problem and receives an increasing attention during recent years. In this paper, we propose a hierarchical structure Category-Separating Strategy...
This paper proposes a new approach to the analysis and design of biological systems. It will be shown that, upon an application of Time-Scale Separation Principle to a nonlinear biochemical system at steady-state, a rational polynomial function relates the chemical characteristics of slow-rate substances. This functional dependency can be determined by a small set of measurements. With the functional...
Until now, systems using speaker identification have not been widely used. The main reason is because the identification accuracy is low. Therefore, in this paper, we report the results of modulation frequency analysis and propose a novel method using effectively modulation frequency components of vocal tract characteristics. We investigated effective components of interframe variation of MFCC. The...
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