CSE CONNECT

epartment’s Achivements

New Patents Granted to CSE faculties

Patent title:

Method For Generating A Secret Key For Encrypted Wireless Communications

The method for generating a secret key for encrypted wireless communications is a physical layer technique that exploits channel

randomness between two nodes , the channel being characterized by reciprocity between the two nodes . Reference signals

exchanged by the two nodes are used to faun a channel estimate , including gain location and phase location . The gain and phase

locations are compared to threshold values , and locations exceeding the respective thresholds are stored in vectors . The moving

differences between gain and phase locations at adjacent sampling times define secondary random processes . The moving

difference values are quantized and converted to bit streams , which are concatenated to generate the secret key . Measures are

provided to reduce parity errors , thereby reducing the bit mismatch rate ( BMR ) .

Inventors:

Dr. Tarek Elfouly, Dr. Amr Mohamed, and Dr. Tamer Khattab

Date of Patent :

Sep 2019

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Patent title:

Non - Coherent Ultra – Wideband Receiver

This patent aims to design a non - coherent ultra - wideband receiver that receives an ultra wideband ( UWB ) signal , consisting

of pulses ( or “ symbols ” ) and uses on - off keying ( OOK ) modulation so that when a binary “ 0 ” is transmitted , the receiver

collects noise - only samples . The receiver collects samples during the symbol ( pulse ) duration and sorts the samples by

magnitude of voltage or energy . The receiver uses the known transmission rate and the estimated signal - to - noise ratio to

retrieve a sample index from a look - up table . The receiver then compares the signal sample at the index value with a

predetermined threshold voltage ( or energy ) . If the selected sample exceeds the threshold , then it is assumed that all succeeding

samples also exceed the threshold ( assuming the sort is in ascending magnitude ) and the pulse is present and binary “ 1 ” .

Otherwise , the pulse is absent in the sampling period , and binary “ O ” . The process is repeated for the signal duration

Inventors:

Dr. Tarek Elfouly