HISHAM S. ABDEL-GHAFFAR
hag66@hotmail.com
HISHAM S. ABDEL-GHAFFAR, PH.D, ENG.
hag66@hotmail.com
PROFILE
¨ 20 yrs experience in 2G/3G/4G mobile communication, wireless/ satellite systems, network protocols.
¨ 9 yrs experience in RF / traffic engineering, cell planning, network tuning/ optimization & location.
¨ 10 yrs experience in digital circuit design, DSP / microprocessor & HW/FW embedded systems.
¨ 6 yrs experience in analog, low-power, LF, RF Tx/Rx & filter design; power electronics & magnetics.
¨ 20 yrs experience in analytic / mathematical problem solving, SW programming (Matlab/ simulink/
C...), queuing theory, DSP algorithms, numerical simulation techniques, Bayesian / constrained /
combinatorial optimization techniques; recursive EM field evaluation (knowledge of FEM/BEM).
¨ Holds 2 US patents; published 2 patent applications (pending) and 12+ journal / conference papers.
PROFESSIONAL WORK EXPERIENCE
Senior Consulting Engineer – Wireless Systems
–
2120 Wordsworth Ct, Apt 202
Herndon, VA 20170
US CITIZEN
Mobile: 412-478-6577
Home: 703-544-1992
9/2015 – Present
¨ Running multiple consulting, design and implementation projects for top client in Stafford, VA,
providing mobile network survey equipment and open BTS architectures for mobile user tracking.
Ø Developed white paper and protocols for blind paging of target users and service redirection of
acquired users in CDMA2000 3G1x for management of interference to incumbent network.
Ø Implemented and tested CDMA2000 3G1x tracking protocol stack enhancement in C/C++ using
VMware-based Linux environment and BTS SDR board; supporting full BTS configuration with CDMA
channel lists, multi- neighbor lists and incumbent networks use cases.
Ø Developed user tracking support requirements for LTE stack including eNB radio, cell and HLR user
management parameters; tracking support features adapted from CDMA2K, GSM or UMTS; and LTE
specific tracking support features. Also prepared a C/C++ IDE using VMware-based Linux
environment for implementation and testing of integrated LTE user tracking stack.
Ø Designed the radio specifications requirements of a number of front end modules (FEM’s) for support
of LTE-FDD BTS in bands 1-31 and TD-LTE BTS in bands 33-44 for operation in multiple North
American, European, and Asia-Pacific markets.
Ø Worked with multiple third party vendor products and platforms including Octasic OCTBTS SDR,
Radisys eNode B stack, Cambridge Consultants API software, Range Networks OpenBTS and EPIQ
Solutions integrated software and hardware architectures.
Ø Worked with JIRA and Git / Stash suites for issue tracking and project / repository management.
Samsung Telecomm. America, Herndon, VA (through Worldlink-US)
Senior Systems Engineer – LTE
¨ Running multiple LTE RAN and Core projects for top Tier I client.
Ø Consolidated the eCSFB DRD document and supported the network-readiness testing (NRT) for
FDD-eCSFB test cases.
Ø Analyzed the RAN spurious emission device testing (SEDT); supported the NRT RAN regression
testing for LTE remote radio head (RRH) and analyzed LTE RAN link budgets.
Ø Contributed to FRD documents and road maps for multiple LTE features including FD-MIMO, Carrier
Aggregation (CA), SON and TDLTE for Rel. 11 and 12.
Ø Supported IOT testing for multiple devices including Novatel and sierra.
Ø Completed a study on LTE location services including PRS, OTDOA and AGPS.
Ø Completed a study on LTE relay options and UE mode PICO relays for Rel. 10–12.
10/2012 – 4/2015
HISHAM S. ABDEL-GHAFFAR
hag66@hotmail.com
Ø Completed a study on LTE RRC and MAC protocol management for Carrier Aggregation.
Ø Completed a study on Inter-MME S10 Interface 3GPP support and IOT connectivity & GPRS testing.
Nexius Solutions, Reston, VA
Principal Engineer – LTE
1/2012 – 9/2012
¨ Running multiple consulting projects for Sprint Corporation; namely Push-To-Talk over LTE
(QoLTE), Voice over LTE (VoLTE) and enhanced Circuit-Switched Fall Back (eCSFB).
Ø Completed the QoLTE Feature Requirements Document (FRD). Started and completed the QoLTE
Detailed Requirements Design (DRD) document, submitted to client and vendors.
Ø Presented QoLTE Ph. II enhanced features based on eHRPD, RoHC and TTI bundling.
Ø Designed and completed QoLTE Basic LTE test plan and MOP’s document.
Ø Performed QoLTE Basic LTE testing and submitted test report - performing extensive testing using
many standard LTE test tools (xCAL, iPerf, QXDM, Aeroflex / EAST / Shenick, Spirent) in both
development and network readiness testing (NRT) labs.
Ø Completed an enhanced VoLTE trial description document with major enhancement for VoLTE
architecture, detailed IMS architecture, call / traffic models and procedures.
Ø Performed study for eCSFB system-level call model based on 3G1x service measurement (SM) data.
Ø Ongoing contributions to the eCSFB DRD document.
¨ Running multiple 3G/4G projects for Nexius Solutions:
Ø Wrote statement of work (SOW) project proposals: 1) EVDO hot spot / picocell traffic density analysis
using per-call data, service measurement data and Google Earth GeoVision mapping; 2) Improved
user location algorithm via post-processed per-call data; 3) Nexius integrated service offering vision.
Ø Prepared and taught an LTE overview (Air/RAN/Core) training workshop for Nexius employees.
Illinois Tool Works (ITW) – Technical Center, Glenview, IL
Principle Research Engineer – Wireless
2/2011– 9/2011
¨ Project Manager in charge of complete wireless IP network design for industrial welding applications
including mission critical control, weld management & information, streaming & activity tracking sensors.
¨ Designed multi-cell wireless welding network architecture for different topologies (construction, factory,
shops, farms) as an overlay on WiFi infrastructure network offering flexible associations, intra / inter weldcell
communication and Internet access for sensor data upload, browsing and diagnostics downloads.
¨ Designed an API messaging protocol based on DeviceNet industry standard for TCP/UDP transport.
¨ Analyzed available embedded design modules and vendors for WiFi ZigBee & Bluetooth technologies.
¨ Performed hardware baseband analysis of different weld product platforms (power sources, wire/gas
feeders, weld guns … etc) with various Atmel, Intel, TI, ARM DSP engines for wireless module integration
on UART and SPI interfaces.
¨ Managed test plans to measure RFI spectrum from arc welding of different technologies (TIG, MIG, Stick,
Plasma cutting). Assessed FCC parts 15, 18 for weld wireless waiver and wireless design options.
AT&T Labs – NSE Dept., San Ramon, CA (through Collabera Inc, NJ)
Wireless Network Management Consultant – LTE
10/2010 – 1/2011
¨ Responsible for OA&M / OSS configuration and performance management of AT&T 4G LTE wireless
network – Phase 1 (FFA) Rapid System Deployment with Ericsson, Cisco & ALU EPC and Ericsson &
ALU RAN equipment. EPC platforms included Ericsson SGSN-MME, ALU 7750 & Cisco 7613.
¨ Performed CLI data translation and requirement support analysis for the CM & PM XML interface based
on 3GPP 32.xxx TMN and Ericsson’s attributes for LTE MME. Data translation for CM included capacity,
mobility, equipment, fault & pool management and network, node, HW/SW, interface, SS7, SNMP & QoS
configuration; and for PM included Ericsson and ALU KPI/KQI analysis.
Self-Consultant, Wireless location / positioning services.
Tollgrade Communications Inc, Cheswick, PA – Smart Grid Dept.
4/2010 – 9/2010
4/2008 – 3/2010
HISHAM S. ABDEL-GHAFFAR
Senior Staff Engineer
hag66@hotmail.com
¨ Designed & built an indoor 3-phase vertical/ hor. overhead power lab (4kV/600A) for power factor/
quality (PF/PQ) testing and V/I fault emulation of smart grid MV sensors. Optimized capacitive PF tuning
for line mutual inductance model and eliminated EMI effects using custom-designed cable tray.
¨ Invented analytic algorithm for Exact Computation of near/far electric field, potential & C-matrix of
overhead power lines; more accurate and flexible than Integrated-Soft Electro® FEM/BEM simulator. It
solves exact normalized geometry functions to allow immediate change or loss (floating) of cable BC’s.
¨ Designed a HW/FW PF measurement platform based on MSP430, including PFdisp, 2kHz PFtrue, V/I FT
algorithm via C-language IAR suite, clock & A/D Mux design, modular Tchebechev LPF and multi-gear
services; interfaced via SRAM, spi-flash & ProASIC3 FPGA to either WiFi or 900 MHz meshing radio.
¨ Designed & tested a capacitive, self-equalized HV measurement circuit with line diagnostic feature.
¨ Analyzed & tested a PQ upgrade scheme including magnetic core gap-linearization, triac gate control as
anti zero-cross distortion circuit, surge current acquisition / protection and low current management.
Arab Academy for Science & Technology (AAST), Cairo – ECE Dept.
Associate Professor
4/2003 – 2/2008
¨ Designed and Taught courses on: signals & systems – probability & random processes – commun.
networks – mobile communication – digital communication – satellite communication (grad course).
¨ Conducted research on UMTS–WLAN interworking, CDMA Multi-user detection, wideband equalization
of fading channels, hidden Markov models, OFDM / MC-CDMA, LTE, WiMAX. Supervised projects on
CDMA P/A clipping, UMTS RF network planning, GPS algorithm & RxFE design via HFSS & Xilinx FPGA.
¨ Head of the communications courses group and communications labs.
Lucent Technologies, NJ
Member of Technical Staff (MTS)
¨ 3GPP UMTS Architecture & Perf Dept, Mobility Solutions, Whippany, NJ
6/1997 – 2/2003
8/2001 – 2/2003
Ø Engineered and dimensioned CPU resources for U- & C-plane signaling protocols (NBAP, ALCAP, RLC/
MAC, DCH-FP) for Node B OneBTS main controllers; for a typical traffic mix or GPRS PDP data.
Ø Analyzed RF KPIs & CAC for multiple CS/PS services & call flow scenarios (34.108 conformance).
Designed a UMTS overload control algorithm with dual reporting periodicity (pub #20050043034).
¨ Performance Analysis Dept,
Bell Labs, Holmdel, NJ
3/1998 – 8/2001
Ø Dimensioned / planned Lucent’s 3GPP/UMTS OneBTS ASIC resources, top-down & bottom-up, with
traffic analysis covering support of CPCH, DSCH & DCH via RLC, MAC & RRC protocols. Designed a
queuing-based DSCH scheduling algorithm and a server-processor resource sharing algorithm for
assignment of ASIC Tx modules in softer handover (patent no. 8,279,782 B2, Oct. 2, 2012).
Ø Invented a minimum link delay RNC – Node B node synchronization algorithm using AAL5/ATM
timing cells with accuracy better than NTP (patent no. 7,765,422 B2, Jul. 27, 2010) and an inter – Node
B node synchronization algorithm based on DCH-FP (pub # 20030210713) under UTRAN TS25.402.
Ø Analyzed reliability models for ATM & DSP-based platforms of 2G/3G nodes with 5 9’s availability.
Ø Designed & analyzed a joint EbNo / RSSI-based overload control algorithms for IS-95 CDMA RL.
Ø Implemented real time link-level (LLS) Matlab simulator to design hard or hamming-window P/A
clipping algorithms for IS-95 BTS DL. Achieved more than 8dB to dramatically cut down the PA cost.
¨ Global Wireless Group,
Consumer Products, Holmdel, NJ
Ericsson Communications Canada, Mississauga, ON – PCS 1900 Dept.
RF Engineer
6/1997 – 3/1998
Ø Prepared field test plan for OMAHA CDMA PCS handsets and coordinated with CDG & TR45.5.
Ø Taught a course and led a Matlab/SPW modeling & simulation project on IS-95 air interface.
11/1995 – 6/1997
¨ RF Network Design: Performed dimensioning of RF traffic, BSS capacity and H/W requirements for A-bis
& A interfaces. Designed cell plans & link budgets for omni- & clover-leaf clusters with different clutter &
coverage (outdoor, indoor, vehicle). Evaluated antenna specs; imported antenna patterns, clutter & terrain
data into EET design tool. Evaluated coverage maps (RSSI, C/I, C/A) & used EET to tune & optimize
client Microcell-123 pre-launch cell sites. Performed field tests with Ericsson’s TEMS & supported site
HISHAM S. ABDEL-GHAFFAR
hag66@hotmail.com
tuning of antenna height, bearing, downtilt & power calibration. Provided design audits for state-of-the-art
GSM RF plans. Provided technical guidelines for PCS-1900/IS-95 site collocation.
¨ RF Regulatory Standards: Represented Ericsson at Industry Canada RABC Ad hoc for the LPCS
Standard Radio Systems Plan, providing technical analyses on spectrum & interference management for
UPCS/LPCS (PCS1900, IS-95, IS-136, aka TR46, TSB PN3777) - GSM A/I standardization T1P1.
¨ RF Product Manager: Evaluated product cycle and responded to RFIs, RFPs, RFQs for Ericsson CMS
40 BSS, including RBS type approval, MCPA, TMLNA / TTLNA, active antennas, distributed antenna
systems (DAS), indoor multicast systems/ leaky feeders, inter-modulation/ cross-modulation distortion, Rx
sensitivity, repeaters, WLL (FC/CTS/CATV), mobile office, EMI, Health & safety, FH trials.
SKILLS
¨ 2G/3G/4G/5G Mobile Communications, Satellite and Wireless Systems
Ø Proficient in LTE Rel. 8-10; working knowledge in LTE 11-13; overlooking 5G radio access proposals.
Ø Proficient in UMTS/3GPP/LTE C/U-plane MAC/RRC protocols, synchronization, overload / CAC, HSPA,
scheduling, resource sharing, interoperability, architecture & PTT protocols for iDEN/ EVDO/ LTE.
Ø Competent in GSM and IS-95 / 3GPP2 / CDMA2000 systems in all layers.
Ø Knowledgeable in OFDMA, SC-FDMA, MC-CDMA, H-ARQ, STBC / MIMO, SDR and IMS for 4G.
Ø Knowledgeable in satellite systems, architecture, positioning, control, orbital theory & link budgets.
Ø WLAN 802.11x CSMA/CA, 802.16 Wimax, LTE evolution, UMTS/WiFi coupling (M-IP4/6, m-SCTP,
SIP). WLL, UPCS, & 802.15 WPAN (Bluetooth, ZigBee) networks
¨ RF Engineering, Network Design, Optimization, Regulatory Issues
Ø Proficient in traffic engineering, hard/soft link budgets, cell/capacity/frequency plans, site selection/
collocation, RF tuning/ optimization/ ACP (Planet-EV, Atoll), location services, hot spot analysis.
Ø Multipath fading channels, antenna diversity, hard / soft handover, radio spectrum measurement.
Knowledgeable in FCC (parts 15, 18, 24) & IC/CE RF/ EMI regulatory requirements.
¨ Physical Layer / Digital Modulation
Ø Extensive link-level simulation of IS-95 / other A/I in fading channels.
Ø Digital Tx, Rx, pre-distortion, equalizer design; BB detection & up/down conversion.
Ø Wireless digital modulation (MSK/GMSK, π/4-DQPSK, MPSK, MQAM, MFSK).
¨ Network Switching and Protocols
Ø 802.3 LAN, CAN, CSMA/CD/CA MAC. TCP/UDP, IP suite (ICMP/ARP/DHCP), Routing (RIP/OSPF,
inter-AS EGP/BGP). Queuing theory, ATM I.363/366.x AALx & Broadband HFC/ DSL.
Ø Trained on Ericsson AXE 10 & LU 5ESS space-time / soft Switches. Self-trained Cisco CCNA, CCNP
¨ MicroProcessors/ MicroControllers/DSPs
Ø Command of TI MSP430, Intel MCS-51 & Z80 for I/O, communication & embedded design.
Knowledgeable in Intel X85/86, Motorola MC6800 μP and ARM7 family.
Ø Knowledge of VHDL for Xilinx and Actel ProASIC3 FPGA-based system design.
Ø Knowledgeable in Lucent DSP 16xx and familiar with TI TMS320C2x/5x/6x.
¨ Hardware, Circuit & Artwork Skills
Ø Strong experience of analog circuit design, switching, power electronics & magnetics.
Ø Strong skills of μC digital design with flash/SA ADC, SRAM/EPROM, JTAG & S/P I/O.
Ø Strong experience of PCB fabrication (dark room processing; UV exposure … etc), Circuit testing,
debugging & EEPROM programming. PCB artwork (ACAD, ORCAD, PADS) and RF PCB, μ-strip,
antenna design (Zealand, HFSS).
Ø Command of trouble shooting & fault tracing principles; top-down and bottom-up.
¨ Software Skills
Ø Competent in simulation and programming SW (Matlab / Simulink, MathCAD, Opnet, Visual Studio,
C/C++) besides Visual Basic, Fortran. Familiar with System View, Maple & LabVIEW. Proficient with
MS DOS & Windows office apps.
Ø Experience with SUN UNIX apps (X/Open win, CLI, VI, LaTeX, SC, SPW), Linux & parallel
computing. Knowledge of web design, Perl, HTML, Java, Oracle, PeopleSoft, SQL.
¨ Electro-mechanical & Biomedical Control
Ø Proficient in transient analysis/ simulation & delay control for motor-relay systems.
Ø Work experience of step motor and servo motor control with microchip PIC18x μC.
Ø Knowledgeable in switched mode (buck / boost) power supply converters.
Ø Understanding of biomedical signals & image processing w/ strong observation.
HISHAM S. ABDEL-GHAFFAR
hag66@hotmail.com
¨ Soft skills:
Ø Outstanding communication skills & proven capability to supervise & coach others. Interfaces
effectively with associates, peers, staff & executives.
Ø Excellent team work ethics in single / multi discipline environments.
EDUCATION
Ph.D in Electrical Engineering
–
Univ. of Toronto, Canada,
November 1995
¨ PhD Qualifying Exam: Ranked First in ECE qualifier class (mark 92%). GPA: 3.9/4
¨ PhD Courses: Communication networks (A) –Data communications (A) – Error control codes (A) –
Mobile communications (A) – Stochastic processes (A+) – Statistical communications (A+).
¨ Research Assistant: Conducted research funded by Information Technology Research Center (ITRC)
of Ontario, and by NSERC on optimum design of diversity receiver structures for spread spectrum mobile
communication using different multipath channel state information. Gained strong knowledge of 1G/2G
cellular & PCS systems (AMPS, IS54/41/136, GSM and IS-95), as well as FDMA/TDMA/CDMA signal
processing, cell planning and frequency planning.
¨ Teaching Assistant: Tutored B.Sc courses: Communication systems - Applied science - Signals &
systems - Electrical fundamentals - Probability. Supervised Communication systems & Electronics labs.
M.Sc in Electrical Engineering
¨ Researcher:
–
Ain Shams Univ, Cairo, Egypt
June 1990
Designed and implemented a Front-to-End digital image codec as asynchronous,
full-duplex ITU DTE communication system using 8031 mP working in either PCM or Walsh-Hadamard
transform block coding and used for remote monitoring or storage/retrieval of video images. Prepared
PCB layout using ACAD and performed PCB fabrication, testing and debugging from A-Z. Strong
background in digital mP-based circuit design, I/O interfacing and EPROM programming.
¨ Assistant Lecturer: Tutored courses on: Communication systems – Information theory - Antennas -
Digital communications - Electronic circuits - Digital pulse circuits - Electronics & microwave labs.
Supervised B.Sc. projects on: PAL/SECAM Color TV Pattern generator - Data acquisition system using
Zilog Z80 mP - Video digitizer and controller for PC monitors - Electronic blood pressure meter.
B.Sc in Electrical Engineering
–
¨ Grade: “Distinction with Honor Degree”
Ain Shams Univ, Cairo, Egypt
GPA: 3.89 / 4.
Part-Time Positions during Masters’ Research Period:
¨ Biomedical Engineer:
¨ Hardware Systems Engineer:
AWARDS AND HONORS
¨ Canadian Information Technology Research Center (ITRC) Scholarship for one year (94/95).
¨ Univ. of Toronto Open Doctoral Fellowship for 3 consecutive years (91/92, 92/93, 93/94).
¨ Univ. of Toronto Differential Tuition Fee Waiver Scholarship for 2 years (91/92, 92/93).
¨ Medal and Certificate of Honor from the Engineers' Syndicate in Cairo, for ranking First of B.Sc. class.
¨ Monthly honorary stipend from the Ministry of High Education in Cairo for 5 years of university.
¨ Member of the Association of Professional Engineers of Ontario (PEO), Oct 1996.
¨ Member of the IEEE, July 92, and IEEE-TCPC (Tech. Committee on Personal Comm.), Nov. 94.
INDUSTRIAL TRAINING
MEDICANCY Consultants,
June 1985
Rank: “First” in B.Sc class.
¨ B.Sc Project: “Design and Implementation of NTSC Color Sync Generator”. Grade: “Distinction”.
Cairo, Egypt
MRC Computer Systems Inc, Cairo, Egypt:
(3.5 years):
Solved & fixed electronic, electromechanical & motor control problems in medical equipment: X-ray
machines, ECG monitors, defibrillators, anesthetic machines, vaporizers, ventilators, optical
refractometers; different models. Strong understanding of biomedical signal processing.
(3 years):
Maintained an Interdata mini-computer with 2M-student database, including OS32/16 CPU, Perkin Elmer
1100 terminals, Printronix 600 printers, Trident T80 disk drives, Pertic mag tapes.
HISHAM S. ABDEL-GHAFFAR
hag66@hotmail.com
¨ Lucent Technologies' technical courses including (Learning and Performance Center, NJ):
- "IMT-2000 RTTs & cdma2000", August 1998.
- "Optical Communications: Technology and Applications", April 1998.
- Besser Associates "RF Transceiver Design", February 1998.
- "DSP16XX Architecture, Instruction Set and Development Tools", January 1998.
- "ATM and Broadband Applications", October 1997.
- "Modern and High Speed (SONET/SDH) data Communications", Oct. 1997.
¨ “The Wireless Local Loop - Network and Application Solutions for Successful Execution of Cost-effective
Business Plans”, International Commun. for Management (ICM) Conference, Chicago, IL, Feb 11-12, 1997.
¨ “Demystifying Electromagnetic Interference from Wireless Telephones”, Spectrum Sciences Institute
(APREL labs) Seminar, Nepean, Ontario, July 22, 1996.
¨ Electromagnetic Compatibility Workshop, Biomedical Eng. Group, McGill Univ, Montreal, Jan 18, 1996.
¨ Ericsson’s technical courses for PCS-1900 CMS 40 system (E-TEC, Richardson, TX, and Mississauga,
ONT, Jan-Aug 1996):
- CMS 40 System Courses: Introduction - AXE 10 O&M - RBS 2000 O&M - BSC O&M - OSS.
- RF Engineering Courses: Cell Planning - EET user course 1 - Advanced EET user course 2.
¨ “Finance and Accounting for Non-financial Managers”, Professional Development Institute (PDI), Univ. Of
North Texas, offered in Toronto, July 24-26 1996.
¨ “Time Management: first things first - 7 habit organizer”, Covey leadership workshop, Toronto, April 1996.
US PATENTS
¨ H. Abdel-Ghaffar, W. Ahmed, A. Sampath, S. Nanda, “Systems and methods for the assignment of a plurality of
processors to a plurality of data servers”, US Patent Number 8,279,782 B2, October 2, 2012.
¨ H. Abdel-Ghaffar, “Method of determining a time offset estimate between a central node and a secondary
node,” US Patent Number 7,765,422 B2, July 27, 2010.
PATENT APPLICATIONS
¨ H. Abdel-Ghaffar, J. Mueckenheim, “Method of providing or receiving cell load information using at least dual
periodicity”, US Patent Application 10/645,856; pub # 20050043034, February 24, 2005.
¨ H. Abdel-Ghaffar, “Estimating time offset between link points in a communication network operating in
frequency division duplex mode,” US Patent Application 10/142,768; pub # 20030210713, Nov 13, 2003.
PUBLICATIONS
JOURNAL PAPERS:
1) A. M. Sareh, H. Abdel-Ghaffar and M. H. Elnarekh, “Performance of multi-stage detectors in synchronous
CDMA mobile communication system”, Mansoura Univ. Engineering Journal, Egypt, Vol. 31, No. 4, Dec. 2006.
2) H. Abdel-Ghaffar, “Analysis of Synchronization Algorithms with Time-Out Control Over Networks With
Exponentially Symmetric Delays,” IEEE Trans Commun, Vol 50, No 10, Oct. 2002.
3) H. Abdel-Ghaffar, Ericsson Canada “RABC/PCS Standards (Power Limits)”, February 1996, in TR-46
Technical Service Bulletin PN-3777 (Licensed PCS to PCS Interference), October 1996.
4) H. Abdel-Ghaffar and S. Pasupathy, “Suboptimal, Partially Coherent Detection Over Multipath / Multichannel
Rayleigh Fading,” European Trans. Telecommun. (ETT), vol. 7, No 2, March-April 1996.
5) H. Abdel-Ghaffar and S. Pasupathy, “Asymptotical Performance of M-ary and Binary Signals Over Multipath /
Multichannel Rayleigh and Rician Fading,” IEEE Trans. Commun, vol. 43, No. 11, Nov. 1995.
6) H. Abdel-Ghaffar and S. Pasupathy, “Performance of the Noncoherent BiQuadratic and GLRT Receivers Over
Two-Path Channels With Known Amplitudes and Rayleigh Fading,” IEEE Trans. Veh. Technol., vol. 44, No. 4,
Nov. 1995.
CONFERENCE PAPERS:
1) N. Abdel-Karim & H. Abdel-Ghaffar, “Operational Sensitivities of Northeastern US Grid to Wind Power
Integration Scenarios,” accepted for presentation in the IEEE Power & Energy Society general meeting, 25-29
July 2010, Minneapolis, Minnesota, USA.
HISHAM S. ABDEL-GHAFFAR
hag66@hotmail.com
2) H. Abdel-Ghaffar, Hanna A. Ebrahim, Ahmed A. Khalifa “Efficient Mobility Management Protocols for
Integrated UMTS and Outdoor WLAN 802.11g”, Proceedings of the International Wireless Commun. and
Mobile Computing (IWCMC) Conference, 6-8 Aug. 2008, pp 552-558, Crete Island, Greece.
3) H. Abdel-Ghaffar, Hanaa A. Ebrahim, Ahmed A. Khalifa, “Performance evaluation of real-time applications for
vertical handover between WLAN 802.11g and UMTS”, Proceedings of the 3rd IEE Mobility Conference, 25-27
October 2006, Bangkok, Thailand.
4) H. Abdel-Ghaffar, “The minimum link delay algorithm – An enhanced mechanism for macroscopic
synchronization of telecom network nodes”, Proceedings of the 46th IEEE International Midwest symposium
on circuits & systems, Cairo, Egypt, Dec. 27-30, 2003.
5) H. Abdel-Ghaffar and S. Pasupathy, “Analysis of the BiQuadratic and BiLinear Noncoherent Receivers Over
Two-Path Rayleigh Fading With Known Amplitudes” Proceedings of the 45-th IEEE Veh. Tech. Conference,
Chicago, Illinois, July 26-28, 1995.
6) H. Abdel-Ghaffar and S. Pasupathy, “Partially Coherent, Suboptimal Detectors Over Rayleigh Fading Diversity
Channels,” Proceedings of the GLOBECOM' 94 3rd Comm. Theory Mini-Conf. (CTMC), San Francisco,
California, Nov. 27 - Dec. 1, 1994.
7) H. Abdel-Ghaffar and S. Pasupathy, “Asymptotic BER Analysis Over Rayleigh and Rician Fading Diversity
Channels,” Proceedings of the 17-th Biennial Symposium on Communications, Queen's Univ., Kingston,
Canada, May 29 - June 1, 1994.