Resume

Graduate Assistant Electrical Engineer

Location:

Asbury Park, NJ, 07712

Posted:

July 31, 2021

Contact this candidate

Resume:

ZEBIBA SHIFA

** **** **** **** *****: 732-***-**** (Cell-908-***-****)

Wayside, NJ 07712 E-mail: adnzho@r.postjobfree.com

Profile: Electrical Engineer with experience in system engineering, testing, documentation, and maintenance of telecommunication hard- and software. Worked in the areas of system requirement definition, digital signal processing and network operation systems. Recognized for diligent, timely and accurate contributions.Experience includes

Definition of requirements for interfaces between GCP and other systems

Porting of DSP code for PSTN voice processing between different digital signal processor platforms

Validation and documentation of DSP code for voice enhancement products in PSTN networks

Verification of standard compliance of line echo cancellers in PSTN switches (4ESS and 5ESS)

Development, documentation and execution of test plans for Packet Voice Gateway Systems

Issuance and follow up on Modification Requests

Software system tests on AT&T Customer Data Information Systems

Expansion and maintenance of telecommunications switch support software

EXPERIENCE

10/07 – 10/17 AT&T: Systems Engineer

Support of GCP projects:

collecting user requirements from Tier I,

writing system requirements (Tier III) in form of HLDs and AIDs,

base-lining it with the development team using industry standard tools ( PRISM, RALLYand RequisitePro).

maintained web services

Supported database replications of INSTAR, USRP, NISE

Performed Time & cost analysis (T&C0, T&C1, and T&C2)

Provided support for production and testing of new features

05/07 – 10/07 Conexant Systems: DSL Modem Hardware Tester

Execution of test activities including hardware setup and breakdown.

Tested network performance of GDMT, ADSL, and ADSL2+ modems and verified their interoperability with DSL equipment from different vendors.

Setup of test stations with PCs, network traffic simulators, and other test equipment.

Loaded software and firmware images onto hardware using tools and web pages.

Ran and modified test scripts as required.

Evaluation and reporting of test results.

09/04 – 05/07 Brookdale Community College: Math Adjunct Faculty Member

Taught and tutored pre-calculus and calculus courses.

Designed, corrected, and provided feedback for tests and quizzes.

06/05 – 07/05 Avtech Institute of Technology:

Attended course in VOIP/Cisco IP Telephony.

Fundamentals of VOIP (Signaling, CIPT concept, Call Control Protocols, QoS)

Configuration and trouble shooting of Cisco Call Managers, Gateways, Unity Servers (Setup of telephony devices, voice interfaces, route plans, voicemail, call handlers)

01/00 – 03/03 Lucent Bell Labs: Digital Systems Techniques & Analysis Group, Holmdel, NJ

DSP engineer responsible for documenting, porting and testing DSP code.

Wrote detailed documentation of existing Lucent 16xx DSP code for voice enhancement products. These products include line echo canceller, acoustic echo control, noise reduction, and noise compensation as they are used in switches or Voice over Packet (VoP) gateways.

Ported voice enhancement algorithms from Lucent 16xx DSP code to fixed-point C code to achieve platform independent and bit-exact algorithm representation.

Tested bit exact C-code for echo canceller against ITU-T G.168 requirements.

Created test vectors for voice enhancement algorithms using fixed point C-code and verified performance of algorithms after they were ported to new DSP platforms.

Converted DSP code for DTMF and MF tone detectors from TI C54x platform to TI C55x platform. Reduced MIP count by taking advantage of improved instruction set of C55x family. Conducted regression tests and verified bit exactness with original code.

12/97 – 12/99 Lucent Bell Labs: Digital Systems Techniques & Analysis Group, Holmdel, NJ

Project leader for Echo feature team for the PVG (Packet Voice Gateway) product: Developed and documented test plan for the PVG echo canceller. Developed test scripts for the device driver group to test ECPR4 driver, TSI driver, and DSP driver of PVG. Evaluated performance of Echo Canceller ASIC ECPR4 and ECPR5 according to ITU standard G.168. The tests were conducted using Matlab, GLCOM T1 cards, and a laptop with docking station. Issued modification reports (MRs) into Sablime Database and followed up with the fixes.

Tested PVG-IP: provisioned ECPR4 chip using Cadenza II GUI; performed IP call setup using SARAS soft switch; conducted G.168 tests, performed subjective tests for IP calls using phones, hybrids, T1 test set and HP test set (CERJAC); tested loop back capability, continuity test, announcements, and tone generator; tested comfort noise and silence suppression on a per call basis using MATLAB scripts.

Tested PVG-ATM under various software loads: evaluated two way echo cancellation using subjective and objective testing; tested protection switching functionality of ECPLIs; tested Active-Active functionality of SCs; prepared Demo for two way echo cancellation over PVG-ATM.

Completely assembled and tested PVG-IP (T1 and E1) frame for delivery to Docomo in Japan

Collected facts from several individuals and documents and completely revised factory test plan for PVG system (SC, ECPLI, DSPLI, ACE); conducted diagnostic tests and thereby collected and documented software parts which are compatible to each other; trained associates in the Merrimack Valley factory in conducting diagnostic tests and the associated trouble shooting.

02/97 – 11/97 AT&T Contractor, DSPA Group, AT&T Labs, Holmdel, NJ

Designed objective tests for evaluation of tone disabler of Line Echo Canceller. Developed test vectors to determine frequency sensitivity of tone disabler. Output signals were evaluated using Matlab.

Designed tests to determine quantization distortion of AT&T Network Echo Canceller, TrueVoice, and SoundScan.

03/96 - 01/97 AT&T Contractor, BCS-CDIS Group, AT&T, Middletown, NJ

Developed and executed software system tests on AT&T Customer Data Information Systems (CDIS). AT&T planned to use CDIS for billing, servicing and provisioning of telephone lines.

Tested CDIS software for maintenance of customer database entries. Tested functions include adding, modifying and disconnecting access of local customers to the 4ESS Switch.

04/95-02/96 AT&T Contractor, CONNECTVU-ATP Group, AT&T Bell Labs, Middletown, NJ

Developed software on CONNECTVU-ATP, an AT&T Network Systems product for telecommunications configuration management. This software manages switch configuration databases, sophisticated user interfaces including expert systems and workflow management functions. It also offers users a variety of relational database capabilities, including network-wide queries, reports, and batch changes.

Used C/UNIX and Informix 4GL, SQL, and ESQL/C to build new and maintain existing telecommunications switch support software. Used the following systems and tools: HP-UX 9.04, Solaris 2.4, Informix 5.04 and 7.1, Sablime (an SCCS-based source code control system form AT&T), and Korn shell.

08/94 - 04/95 Member of Technical Staff, TIRKS System Test Group, Bellcore, Piscataway, NJ

Created a user-friendly menu-driven system for regression testing of TIRKS (Trunk Information Record Keeping System). The program shows the status of the test cases and allows the user to print a specified report during the regression testing process. This was developed using Informix SQL, C, and Korn shell in a SunOS 4.1.x environment.

Responsible for all metrics tools and release tracking software, including daily reports and analysis of test tracking reports. Used Korn shell, C, Informix SQL.

06/94 - 08/94 Programmer, Circuit Development Group, Bellcore, Piscataway, NJ

Created automated scripts (in MYNAH) for regression testing of circuits during various stages in their design.

Used Information Management System (IMS) to gain access to Trunk Integrated Record Keeping System (TIRKS) database and screens

TECHNICAL SKILLS

Languages: Matlab, C, Assembler for TI DSP C55x, Assembler for Lucent DSP 16xx, Informix 4GL, SQL, and ESQL/C, Korn Shell, FORTRAN, Pascal.

Operating Systems: SunOS, HP-UX, Solaris, MS-DOS, Windows

Software: Visual C++, TI Code Composer, FrameMaker, Sablime

Hardware: Lucent Echo Canceller, PacketVoiceGateway, Sun workstations, HP workstations, IBM PC'

01/94 - 05/94 Graduate Assistant, Image Processing Laboratory, NJIT, Newark, NJ

Applied FFT to spatial resolution and quantization of digital images.

Performed statistical analysis for noise reduction of digital images.

Master's Thesis in Motion Compensation Using Correlation-Feedback.

01/93 -05/94 Member of Communications Systems and Signal Processing Laboratory, NJIT

Simulated Levinson-Durbin recursion, Butterworth and Chebyshev filters, and Max filter on a Sun Workstation using C/UNIX.

Developed a model of a human heart using simulation methods on a PC using FORTRAN.

09/92 - 12/93 Graduate Assistant, Education Opportunity Program, NJIT

Taught programming in FORTRAN to a class of 39 pre-freshmen in classroom and in lab.

Tutor in Circuits, Probability and Random Signals, Calculus, Algebra, and Differential Equations.

ACADEMIC EXPERIENCE