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- Robust Adaptive Beamforming Algorithm Using Instantaneous Direction of Arrival With Enhanced Noise Suppression Capability
- This paper proposes a novel adaptive beamforming algorithm with enhanced noise suppression capability. The proposed algorithm incorporates the sound-source presence probability into the adaptive blocking matrix, which is estimated based on the instantaneous direction of arrival of the input signals and voice activity detection. The proposed algorithm guarantees robustness to...
- Tags: Algorithm, Engineering
- White papers 2006-09-29
- Microphone Array for Headset With Spatial Noise Suppressor
- This paper presents a hybrid microphone array architecture used for processing the signals from a small microphone array that is used in a headset. The processing chain consists of fixed end-fire beamforming, adaptive spatial noise reduction and stationary noise suppression. The far-field design algorithm used for the fixed beamformer is...
- Tags: Microphone, Headset, Noise Reduction
- White papers 2005-06-30
- Clustered OFDM With Adaptive Antenna Arrays for Interference Suppression
- This paper investigates clustered OFDM with adaptive antenna arrays for interference suppression. To calculate weights for interference suppression, instantaneous correlations of the received signals and channel responses corresponding to the desired signal have to be estimated. Therefore, a polynomial based parameter estimator is proposed to combat the severe leakage of...
- Tags: Georgia Institute Of Technology, Interference Suppression, OFDM, Construction, Wireless
- White papers
- Fire Suppression System
- We're moving into a new building at the end of the year. I'd like to find out what our options are when it comes to fire suppression systems. Is Halon still the system to get, or are there other technologies that are preferable today?Fire suppression alternativesA few things you will...
- Tags: Halon
- Discussion threads 2006-06-02
- A Genetic-Algorithm Based Mobile Sensor Network Deployment Algorithm
- This paper describes a Genetic-Algorithm GA based deployment algorithm of mobile sensor network. The algorithm is designed for real-time online deployment for maximum coverage of the environment. The paper presents the details on the algorithm and the implementation, including the major components in the design: recombination, mutation, and the fitness...
- Tags: Algorithm, Mobile, Network, Sensor, Engineering
- White papers
- Crystal Report Suppression
- I currently have a report & a sub-report in Crystal 8.5 that is pulling values. Does anyone know how to supress the detail on the main report if the subreport values are null?Should be in Format, Section.Click on your subreport in the left pane.Select suppression options in the right...
- Tags: davegenovese@...
- Q&A 2005-03-03
- Suppression Rule for Speech Recognition Friendly Noise Suppressors
- Audio signal enhancement often involves the application of a time-varying filter, or suppression rule, to the frequency-domain transform of a corrupted signal. Known approaches use rules derived under Gaussian models and interpret them as spectral estimators in a Bayesian statistical framework. While this mathematical approach provides rules that satisfy certain...
- Tags: Speech Recognition, Emerging Technologies
- White papers 2005-12-30
- A Genetic Optimization Algorithm to Solve the Problem of the Load-Balancing of Network Load
- An optimum genetic algorithm for balanced network load is proposed in this paper; the algorithm employs the natural number-coded and the selection crossover mutation operator. The algorithm carries on the entire spatial parallel search which concentrates on the high performance parts in order to improve the efficiencies and robustness of...
- Tags: Algorithm, Network, Load Balancing, Engineering
- White papers 2006-07-01
- Encryption White Paper
- To scramble plaintext original data into ciphertext the encrypted version you need an algorithm and a key. The algorithm defines which encryption method is used, while the key cites a specific instance of the algorithm. The following example explains this further.
- Tags: Algorithm, Encryption, Engineering
- White papers 1999-02-18
- Bayesian Blind Parafac Receivers for DS-CDMA Systems
- This paper proposes a new Bayesian blind detection/identification algorithm for CDMA system in presence of spatial diversity at the receiver. Such algorithm provides good performance even for short frame length (typically, 10 symbol periods) and for large system load. Furthermore, simulation results show that the proposed method is close to...
- Tags: Algorithm, Rice University, Bayesian, Engineering
- White papers
- The Papoulis-Gerchberg Algorithm With Unknown Signal Bandwidth
- The Papoulis-Gerchberg algorithm has been extensively used to solve the missing data problem in band-limited signals. The interpolation of low-pass signals with this algorithm can be done if the signal bandwidth is known. In practice, the signal bandwidth is unknown and has to be estimated by the user, preventing an...
- Tags: Algorithm, Bandwidth, Papoulis-Gerchberg Algorithm, Engineering
- White papers 2006-05-17
- Cache Optimization for Coarse Grain Task Parallel Processing Using Inter-Array Padding
- The wide use of multiprocessor system has been making automatic parallelizing compilers more important. To improve the performance of multiprocessor system more by compiler, multigrain parallelization is important. In multigrain parallelization, coarse grain task parallelism among loops and subroutines and near fine grain parallelism among statements is used in addition...
- Tags: Grain, Optimization, Compiler, Parallel Processing, Multiprocessor, Development Tools, Processors, Software Development, Software/Web Development, Semiconductors, Hardware, Components
- White papers 2007-12-01
- An Algorithm to Detect TCP Spurious Timeouts and Its Application to Operational UMTS/GPRS Networks
- This paper proposes an algorithm to identify TCP spurious retransmission timeouts by post processing of packet traces monitored in operational networks. The operational principles of the algorithm and the assumptions behind its design are explained in detail as well as the situations in which the algorithm is prone to inaccuracies....
- Tags: Algorithm, UMTS, Network, GPRS, TCP, Engineering, Tcp/Ip, Networking
- White papers 2006-01-30
- Steffensen Iterations for Power Updates in CDMA Wireless Networks
- This paper presents a new algorithm for mobile power updates in wireless CDMA systems. The algorithm in fact represents accelerated Jacobi iter-actions for mobile power updates of the algorithm popularly known as the DPC distributed power control algorithm. The new algorithm, with more rapid convergence, is obtained using Ste ensen...
- Tags: Algorithm, CDMA, Engineering
- White papers 2006-01-24
- Load Balancing in Dynamic Structured P2P Systems
- This paper proposes an algorithm for load balancing in such heterogeneous, dynamic P2P systems. This simulation results show that in the face of rapid arrivals and departures of objects of widely varying load, this algorithm achieves load balancing for system utilizations as high as 90% while moving only about 8%...
- Tags: Algorithm, Load Balancing, P2P, Engineering
- White papers 2008-01-01
- Phase Noise Suppression in OFDM Using a Kalman Filter
- The performance of an OFDM system can be strongly degraded by the presence of random phase noise especially if a system design targets high data rates at high carrier frequencies. Phase noise causes constellation rotation, the so called Common Phase Error CPE, and InterCarrier Interference ICI. This paper introduces an...
- Tags: OFDM, Wireless
- White papers
- True Parallel Processing in Artificial Neural Networks
- The area of artificial neural networks, which dates back to the early twentieth century, could only offer positive contributions to technology after the back-propagation algorithm was proposed in 1986. In this note an alternative algorithm to the gradient descent used in back-propagation is proposed. This algorithm is based on the...
- Tags: Algorithm, Network, Neural Network, Parallel Processing, Emerald, Engineering
- White papers 2007-10-22
- Performance Evaluation of an Adaptive Backoff Scheme for WLAN
- In this paper, a simple self-adaptive contention window adjustment algorithm for 802.11 Wireless Local Area Networks WLAN is proposed and analyzed. Numerical results show that the new algorithm outperforms the standard 802.11 window adjustment algorithm. Compared with the standard and previously proposed enhancement algorithms, a salient feature of the algorithm...
- Tags: Algorithm, Performance, Window, WLAN, Performance Evaluation, Window Adjustment Algorithm, Wireless LANs, LANs, Engineering, Construction, Wi-Fi, Wireless, Networking
- White papers 2004-11-25
- Animation of Linux Processor Scheduling Algorithm
- This paper describes a visualization tool for the Linux processor scheduling algorithm. The tool is developed for use by operating system learners to gain insight on the Linux scheduling algorithm. Through its graphical environment, a user selects a set of predefined processes as input to the tool. Each process selected...
- Tags: California State University, Algorithm, Processor, Animation, Tool, Linux, Engineering, Productivity, Operating Systems, UNIX, Open Source, Software
- White papers 2005-10-02
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