Ahmed Mohamed
Ahmed Mohamed Abdelal, North Andover, MA US
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20110202645 | Methods and Apparatus to Test Network Elements - Described are computer-based methods and apparatuses, including computer program products, for testing network elements in a communication network. A record file is received, comprising one or more record file elements, each record file element including data indicative of a request received by a network element in a network during normal operation. A virtual client is created for each of one or more identified sources. One or more regenerated requests are generated, each of the one or more regenerated requests being generated based on data in a corresponding record file element from the one or more record file elements. For each of the one or more regenerated requests, the virtual client associated with the regenerated request transmits the regenerated request to a subject network element to test the subject network element, wherein the one or more regenerated requests simulate requests received by the network element during normal operation. | 08-18-2011 |
Ahmed Mohamed Abou-Alfotouh, Belle Mead, NJ US
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20100164449 | Power Converter with a Dynamically Configurable Controller and Output Filter - A controller and an output filter for a power converter, and a power converter employing at least one of the same. In one embodiment, the controller includes an error amplifier with first and second input terminals coupled to one of an operating characteristic and a reference voltage of the power converter, and a switch configured to couple the first and second input terminals to one of the operating characteristic and the reference voltage as a function of a power conversion mode of the power converter. In one embodiment, the output filter includes an output filter capacitor with a first terminal coupled to a first output terminal of a power converter, and an output filter inductor coupled between a second terminal of the output filter capacitor and a second output terminal of the power converter. | 07-01-2010 |
20100164650 | Power Converter with a Dynamically Configurable Controller and Output Filter - A controller and an output filter for a power converter, and a power converter employing at least one of the same. In one embodiment, the controller includes an error amplifier with first and second input terminals coupled to one of an operating characteristic and a reference voltage of the power converter, and a switch configured to couple the first and second input terminals to one of the operating characteristic and the reference voltage as a function of a power conversion mode of the power converter. In one embodiment, the output filter includes an output filter capacitor with a first terminal coupled to a first output terminal of a power converter, and an output filter inductor coupled between a second terminal of the output filter capacitor and a second output terminal of the power converter. | 07-01-2010 |
Ahmed Mohamed El Azab, Cairo EG
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20090012775 | METHOD FOR TRANSLITERATING AND SUGGESTING ARABIC REPLACEMENT FOR A GIVEN USER INPUT - A method for suggesting transliteration for user inputs, comprising: receiving an original user input composed of alpha-numeric characters; identifying the possibility of transliterating the input; determining at least one potential transliteration by performing at least one of the following (1) replacing a sequence of characters in the original input to a possible sequence of Arabic characters (2) determining the probabilities of the potential transliterated alternatives to the user input; and electing the most likely transliteration according to some predetermined criteria (3) verifying the suggested output against a validation repository, the validation repository having a large corpus of Arabic words. | 01-08-2009 |
Ahmed Mohamed Eltawil, Oakland, CA US
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20150318976 | Full-Duplex Self-Interference Cancellation Systems - Embodiments of full-duplex self-interference cancellation systems are described. In one embodiment, a full-duplex transceiver includes a digital signal processor that processes digital signals, a transmit chain that receives a first digital baseband signal from the digital signal processor and converts it to a first RF signal, a receive chain that receives a second RF signal and converts the second RF signal to a second digital baseband signal, and an auxiliary receive chain that receives a portion of the first RF signal and converts it to an auxiliary digital baseband signal. The transceiver may further include a self-interference canceller that applies a channel transfer function to the auxiliary digital baseband signal to generate a cancellation signal and subtracts the cancellation signal from the second digital baseband signal to cancel self-interference at the transceiver. The suppression of self-interference in the transceiver assists the transceiver to achieve higher efficiency in full-duplex communications. | 11-05-2015 |
Ahmed Mohamed Farrakha, Kitchener CA
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20120131116 | CONTROLLING DATA TRANSFER ON MOBILE DEVICES - A communication system can provide one or more mechanisms for controlling data transfer on a mobile device. A technique based on such a mechanism includes receiving a request to transfer data to an application, accessing a first service identifier associated with the data, accessing a second service identifier associated with a service mode of the application, and determining whether to allow a transfer of the data to the application based on the first service identifier and the second service identifier. | 05-24-2012 |