Ayman Abdel-Samad Email & Phone Number

Waterloo, Ontario, Canada

Waterloo, Ontario

Waterloo, Canada

• Added multi-RAT support to RRC connected measurements module while integrating LTE stack with legacy 2G-3G stacks. Implemented a generic measurements adapter between control planes of 2G, 3G and lower layers.• Joint ownership of RRC Connected module during certification and testing. Proposed and supervised the implementation of a Python tool to convert text ASN.1 into a browse-able format.• Extensive debugging of numerous and often complicated full system issues in conformance… Show more • Added multi-RAT support to RRC connected measurements module while integrating LTE stack with legacy 2G-3G stacks. Implemented a generic measurements adapter between control planes of 2G, 3G and lower layers.• Joint ownership of RRC Connected module during certification and testing. Proposed and supervised the implementation of a Python tool to convert text ASN.1 into a browse-able format.• Extensive debugging of numerous and often complicated full system issues in conformance, inter-operability, field and custom developed tests.• Led the design and implementation of a data-plane stress testing framework on host and device. This framework dramatically improved stability and performance. Also helped identify various optimizations in order to achieve desired throughput within MIPS budget.• Worked with Standards team to review and respond to proposed RAN contributions. Filed several patents for improved solutions to problems brought up in RAN or discovered in field testing. Show less

Waterloo, Canada

• Core member of LTE protocol stack development team. Co-designed and implemented memory framework to ensure zero-copy in LTE data-plane. Implemented orphan-tracking and leak detection functionalities. Jointly managed overall data-plane memory and MIPS performance. Developed drivers for hardware accelerators and supervised the porting of data-plane from host to hardware platform and then through multiple chip revisions.• Implemented MIMO ML equalizer for LTE Matlab link level simulation… Show more • Core member of LTE protocol stack development team. Co-designed and implemented memory framework to ensure zero-copy in LTE data-plane. Implemented orphan-tracking and leak detection functionalities. Jointly managed overall data-plane memory and MIPS performance. Developed drivers for hardware accelerators and supervised the porting of data-plane from host to hardware platform and then through multiple chip revisions.• Implemented MIMO ML equalizer for LTE Matlab link level simulation. Worked on interface specification, high level design and message sequence charts. Worked on setting up a host-based development environment against Anite DT framework. Fully implemented MAC layer and host L1 adapter. Wrote extensive regression scripts/functions to achieve high code coverage. Debugged conformance tests on Anite host-based CT framework and on device.• Responsible for 2G radio certification of BlackBerry protocol stack on new hardware platform. Verified performance of physical layer DSP library on new platform compared to legacy platform and reference Matlab link level simulation. Investigated AFC, AGC, modulation detection and DARP equalization, etc. This work resulted in numerous fixes and performance improvements and ultimately contributed to shipping of product on schedule. Several trade secrets to improve SACCH and FACCH decoding and mitigate co-channel interference were internally filed. Show less

Kuala Lumpur, Malaysia

• Developed radix-2 and 4 FFT/IFFT, time synchronization, carrier frequency offset estimation and preamble identification for WiMAX. Also developed joint frame-synchronization and channel estimation, RSSE equalization and soft value generation, whitening matched-filtering using Levinson-Durbin algorithm, carrier frequency-offset estimation, automatic frequency and timing control and CORDIC algorithms for rotation and arctangent for GPRS and EDGE.• Complete fixed-point implementation and… Show more • Developed radix-2 and 4 FFT/IFFT, time synchronization, carrier frequency offset estimation and preamble identification for WiMAX. Also developed joint frame-synchronization and channel estimation, RSSE equalization and soft value generation, whitening matched-filtering using Levinson-Durbin algorithm, carrier frequency-offset estimation, automatic frequency and timing control and CORDIC algorithms for rotation and arctangent for GPRS and EDGE.• Complete fixed-point implementation and optimization for GPRS and EDGE receivers. Provided bit-accurate Matlab models to assist in RTL verification. Wrote detailed design documents in support of designed algorithms and assisted in gate-count reduction efforts. Show less

Duisburg Area, Germany

Worked on optimum linear transmit processing based on partial channel knowledge in MIMO communication systems. The concept of robustness (offering the best performance for the worst-case mismatch) was used to design robust transmit eigen-beamformers which were combined with orthogonal space-time block codes to benefit from inaccurate channel feedback without sacrificing the rate.

Chapel Hill, North Carolina

Worked on the development of the IEEE 802.11a baseband solution based on a parallel 2x2 DSP core. This included a fast parallel 64-point IFFT/FFT algorithm, a robust and efficient timing recovery algorithm, course and fine carrier-frequency offset estimation, channel estimation, and pilot tracking.

Greater Minneapolis-St. Paul Area

Conducted research in the area of radar search strategies which resulted in the formulation of the off-line beamform design problem and the design of beamforms for optimal off-line radar target localization using multi-dimensional constellations obtained by rotations of Simplex structures. Also, introduced a recursive geometrical optimization approach for adaptive beamform design and constructed a hierarchical radar target localization scheme in addition to introducing optimal off-line and… Show more Conducted research in the area of radar search strategies which resulted in the formulation of the off-line beamform design problem and the design of beamforms for optimal off-line radar target localization using multi-dimensional constellations obtained by rotations of Simplex structures. Also, introduced a recursive geometrical optimization approach for adaptive beamform design and constructed a hierarchical radar target localization scheme in addition to introducing optimal off-line and dynamic strategies for target localization and resource allocation. Show less

Toronto, Canada Area

Giza, Egypt

Worked on the topic of Arabic phonetic speech segmentation; a pre-processing stage for speech verification. This phonetic segmentation system was built using C language. The system included computing the LPCs using the Levinson-Durbin recursion, constructing a codebook for Arabic phonemes using vector-quantization, estimating the parameters of the HMM models using the Baum-Welch algorithm and phonetically segmenting Arabic words using the Viterbi algorithm with concatenated HMM models.

Designed and developed micro-controller based systems for data acquisition and control using Zilog Z8 micro-controller assembly language.

Doctor Of Philosophy (Phd), Electrical Engineering, Gpa 4.0

Master'S Degree, Electrical And Electronics Engineering, Gpa 3.57

Bachelor'S Degree, Electrical, Electronics And Communications Engineering, Gpa 3.93