Patents by Inventor Arafat Jamil Al-Dweik
Arafat Jamil Al-Dweik has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10484226Abstract: There is provided an enhanced OFDM communication system using an enhanced channel estimation and data detection techniques. The system is based on replacing pilot symbols by real-valued information symbols, which enables realizing one-shot blind channel estimator (OSBCE) with low complexity. The channel estimator used is equivalent to pilot-based channel estimators for a wide range of signal to noise ratios (SNRs), yet, the OSBCE offers higher power and spectral efficiencies.Type: GrantFiled: December 12, 2016Date of Patent: November 19, 2019Assignee: KHALIFA UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Arafat Jamil Al-Dweik, Youssef Iraqi
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Patent number: 10454615Abstract: There is provided an ultra-light decoder for high speed digital communications based on block codes such as turbo product codes (TPCs). The new decoder can perform soft decision decoding without an algebraic hard decision decoder, which is the core of conventional soft decision decoders. The elimination of algebraic decoder significantly reduces the number of computations required per codeword, consequently, it reduces the decoding delay and processing power. However, reducing the decoding delay would immediately enable increasing the transmission speed, and minimize the need for large buffers at the receiver. Moreover, reducing the complexity and delay would enable using codes with high code rates to increase the system capacity, or use powerful codes with low code rates to reduce the transmission power. Such benefits can be achieved for about 1 dB loss in coding gain. There is also provided a receiver comprising the ultra-light decoder, as well as a decoding process.Type: GrantFiled: May 5, 2017Date of Patent: October 22, 2019Assignee: KHALIFA UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Arafat Jamil Al-Dweik, Husameldin Mukhtar
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Publication number: 20180323811Abstract: There is provided an ultra-light decoder for high speed digital communications based on block codes such as turbo product codes (TPCs). The new decoder can perform soft decision decoding without an algebraic hard decision decoder, which is the core of conventional soft decision decoders. The elimination of algebraic decoder significantly reduces the number of computations required per codeword, consequently, it reduces the decoding delay and processing power. However, reducing the decoding delay would immediately enable increasing the transmission speed, and minimize the need for large buffers at the receiver. Moreover, reducing the complexity and delay would enable using codes with high code rates to increase the system capacity, or use powerful codes with low code rates to reduce the transmission power. Such benefits can be achieved for about 1 dB loss in coding gain. There is also provided a receiver comprising the ultra-light decoder, as well as a decoding process.Type: ApplicationFiled: May 5, 2017Publication date: November 8, 2018Inventors: Arafat Jamil Al-Dweik, Husameldin Mukhtar
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Publication number: 20180212806Abstract: The present invention proposes a demodulator device, a receiver and a demodulation method for M-ary amplitude shift keying systems (MASK) that requires partial knowledge of the CSI, namely, the channel attenuation coefficient. Therefore, the new demodulator, receiver and demodulation method do not require the knowledge of the channel phase shift. Consequently, no complicated channel estimation techniques are required, and the system will be very robust to the system impairments such as phase noise, I-Q imbalance, etc. In this sense, the new technique is denoted as semi-coherent demodulation (SCD). To reduce the complexity of the new SCD, a suboptimal demodulator is derived which has much lower complexity than the optimal while providing almost the same error probability.Type: ApplicationFiled: March 16, 2018Publication date: July 26, 2018Inventors: Arafat Jamil Al-Dweik, Youssef Iraqi, Mohammed Al-Mualla
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Publication number: 20180167175Abstract: There is provided an enhanced OFDM communication system using an enhanced channel estimation and data detection techniques. The system is based on replacing pilot symbols by real-valued information symbols, which enables realizing one-shot blind channel estimator (OSBCE) with low complexity. The channel estimator used is equivalent to pilot-based channel estimators for a wide range of signal to noise ratios (SNRs), yet, the OSBCE offers higher power and spectral efficiencies.Type: ApplicationFiled: December 12, 2016Publication date: June 14, 2018Inventors: Arafat Jamil Al-Dweik, Youssef Iraqi
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Patent number: 9954699Abstract: The present invention proposes a demodulator device, a receiver and a demodulation method for M-ary amplitude shift keying systems (MASK) that requires partial knowledge of the CSI, namely, the channel attenuation coefficient. Therefore, the new demodulator, receiver and demodulation method do not require the knowledge of the channel phase shift. Consequently, no complicated channel estimation techniques are required, and the system will be very robust to the system impairments such as phase noise, I-Q imbalance, etc. In this sense, the new technique is denoted as semi-coherent demodulation (SCD). To reduce the complexity of the new SCD, a suboptimal demodulator is derived which has much lower complexity than the optimal while providing almost the same error probability.Type: GrantFiled: November 14, 2016Date of Patent: April 24, 2018Assignee: Khalifa University of Science and TechnologyInventors: Arafat Jamil Al-Dweik, Youssef Iraqi, Mohammed Al-Mualla
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Patent number: 9912497Abstract: There is provided a computer-implemented method of estimating transmitted signals in a communication system, the signals being transmitted by a transmitter to a receiver over a communication channel having a channel response, the method comprising estimating the transmitted signals based on generated trial sequences minimizing the channel response between adjacent received signals. There is also provided a receiver, a signal detector device and a communication system adapted to estimated transmitted signals in a communication system by generating trial sequences and determining the generated trial sequences minimizing the channel response between adjacent received signals. The present invention is particularly adapted for OFDM communication systems.Type: GrantFiled: November 29, 2016Date of Patent: March 6, 2018Assignee: Khalifa University of Science and TechnologyInventor: Arafat Jamil Al-Dweik
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Publication number: 20170118051Abstract: The present invention proposes a demodulator device, a receiver and a demodulation method for M-ary amplitude shift keying systems (MASK) that requires partial knowledge of the CSI, namely, the channel attenuation coefficient. Therefore, the new demodulator, receiver and demodulation method do not require the knowledge of the channel phase shift. Consequently, no complicated channel estimation techniques are required, and the system will be very robust to the system impairments such as phase noise, I-Q imbalance, etc. In this sense, the new technique is denoted as semi-coherent demodulation (SCD). To reduce the complexity of the new SCD, a suboptimal demodulator is derived which has much lower complexity than the optimal while providing almost the same error probability.Type: ApplicationFiled: November 14, 2016Publication date: April 27, 2017Applicant: Khalifa Univ. of Sci., Tech. & Research (KUSTAR)Inventors: Arafat Jamil AL-DWEIK, Youssef IRAQI, Mohammed AL-MUALLA
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Publication number: 20170078116Abstract: There is provided a computer-implemented method of estimating transmitted signals in a communication system, the signals being transmitted by a transmitter to a receiver over a communication channel having a channel response, the method comprising estimating the transmitted signals based on generated trial sequences minimizing the channel response between adjacent received signals. There is also provided a receiver, a signal detector device and a communication system adapted to estimated transmitted signals in a communication system by generating trial sequences and determining the generated trial sequences minimizing the channel response between adjacent received signals. The present invention is particularly adapted for OFDM communication systems.Type: ApplicationFiled: November 29, 2016Publication date: March 16, 2017Applicant: Khalifa Univ. of Sci., Tech. & Res. (KUSTAR)Inventor: Arafat Jamil AL-DWEIK
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Patent number: 9596119Abstract: There is provided a computer-implemented method of estimating transmitted signals in a communication system, the signals being transmitted by a transmitter to a receiver over a communication channel having a channel response, the method comprising estimating the transmitted signals based on generated trial sequences minimizing the channel response between adjacent received signals. There is also provided a receiver, a signal detector device and a communication system adapted to estimated transmitted signals in a communication system by generating trial sequences and determining the generated trial sequences minimizing the channel response between adjacent received signals. The present invention is particularly adapted for OFDM communication systems.Type: GrantFiled: July 27, 2015Date of Patent: March 14, 2017Assignee: KHALIFA UNIVERSITY OF SCIENCE, TECHNOLOGY & RESEARCH (KUSTAR)Inventor: Arafat Jamil Al-Dweik
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Publication number: 20170033966Abstract: There is provided a computer-implemented method of estimating transmitted signals in a communication system, the signals being transmitted by a transmitter to a receiver over a communication channel having a channel response, the method comprising estimating the transmitted signals based on generated trial sequences minimizing the channel response between adjacent received signals. There is also provided a receiver, a signal detector device and a communication system adapted to estimated transmitted signals in a communication system by generating trial sequences and determining the generated trial sequences minimizing the channel response between adjacent received signals. The present invention is particularly adapted for OFDM communication systems.Type: ApplicationFiled: July 27, 2015Publication date: February 2, 2017Applicant: c/o Khalifa Univ of Science, Tech & Res (KUSTAR)Inventor: Arafat Jamil AL-DWEIK
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Patent number: 9509538Abstract: The present invention proposes a demodulator device, a receiver and a demodulation method for M-ary amplitude shift keying systems (MASK) that requires partial knowledge of the CSI, namely, the channel attenuation coefficient. Therefore, the new demodulator, receiver and demodulation method do not require the knowledge of the channel phase shift. Consequently, no complicated channel estimation techniques are required, and the system will be very robust to the system impairments such as phase noise, I-Q imbalance, etc. In this sense, the new technique is denoted as semi-coherent demodulation (SCD). To reduce the complexity of the new SCD, a suboptimal demodulator is derived which has much lower complexity than the optimal while providing almost the same error probability.Type: GrantFiled: August 3, 2015Date of Patent: November 29, 2016Assignee: KHALIFA UNIVERSITY OF SCIENCE, TECHNOLOGY & RESEARCH (KUSTAR)Inventors: Arafat Jamil Al-Dweik, Youssef Iraqi, Mohammed Al-Mualla