Rf System Team Lead

Ramtin Rohani

RF system & Architecture Engineer

Mobile:+1-202-***-****

U.S Citizen

Los Angeles CA

Email:******.******@*****.***

Senior RF System & Architecture Engineer with 17+ years working in complex application, infrastructure integration initiatives across various Satellite communication and Telecommunication industries. With formal Electrical and Mechatronic Engineering Degree, I have applied my detailed knowledge, best practice framework and methodologies together with my enterprise experiences focusing on planning and Design, control, risk & issues management.

As an experienced and skilled Team Lead RF System Engineer and/or Architecture Engineer, succeeds in engaging people, stakeholder management, project delivery and complex multi environment deployments.

I have acknowledged as a project leader and agile thinker addressing complex project and technology challenges, delivering operational and business value changes by managing clients, vendors and teams to deliver and achieve results.

Role titles: Senior RF system Engineer, RF Team Lead, technical Program Manager

Professional capabilities:

Multi stream program management at enterprise level

Planning: Feasibility, Scheduling, Budgeting, Resource and Vendor resources planning, E2E Deployment

Deployment Management: Leading multifaceted teams, Technology and/or Vendor

Technology: 3G CDMA, UMTS, OFDMA,4G 4G LTE, 5G Massive MIMO and 5G ULTRAWIDE, Satellite Communication, Microwave

Strong Background with RF Link budget, RF Radios and amplifier, RF antenna and design RF network

Strong Knowledge and background of 3GPP, FCC, 5G NR RAN Protocol such as L1, L2, L3

Strong Knowledge of UDP, TCP, HTTP

Experienced with in depth knowledge of concepts such as Beamforming, Massive MIMO, LTE-NR interworking & co-existence, 5G Numerologies

Software Packages &Tools:

RF Design Tools: Atoll, Planet EV

RF Optimization& Post Process Tools: eDAT (ALU tool), Ericsson TEMS, XCAL Quick look, MDR. Actix

Post Process tools: Ericsson TEMS, XCAL Quick look, MadMax, MDR, Agoop, Tableau, Wind catcher

MapInfo, Siterra, MS office and Excel, Visio, Google Earth Pro

Data Entry for complex projects such as RF Data sheet AutoForm, 3GIS

Programing Language:

Python

Career Summary:

Date

Roles

Organisation

June 2023- June 2024

RF system and Architecture Engineer (Consultant)

Southern California Edison

Feb 2021 – June 2023

Senior RF system Engineer – 4G, 5G (consultant)

Verizon Wireless

Sep 2017 – Apr 2020

RF System lead Engineer - 4G,5G (consultant)

Sprint

Feb 2015 – Jun 2017

RF Lead Design/ Engineering Manager- 2GEO Project Nationally (consultant)

Sirius XM Satellite Radio

Jul 2011- Jan 2015

Lead RF system Design Engineer- 4G LTE (consultant)

Alcatel-Lucent

Feb 2011 - Jul 2011

RF DAS Engineer- 3G, 4G (consultant)

AT&T

Nov 2009- Dec 2010

Senior RF Optimization and Performance- 4G LTE (consultant)

Alcatel Lucent

Oct 2007- Oct 2009

Program Manager/ Development Manager (consultant)

ZTE U.S. A

Education and Training:

Bachelor of Electrical Engineering

University of South Australia

Employment and Professional History:

Organisation

Southern California Edison

Senior RF system and Architecture Engineer

Achievements and Responsibilities

Created the deign plan and RF requirements for engineering team

Conduct link budget analysis for RF systems to determine signal strength, interference level, and overall network performance

Provide details about the design to RF engineering team, suggest solution to the RAN vendor reference to the issues

Performed spectrum analysis and frequency planning to mitigate interference and enhance network capacity

performed various tests to analysis the antenna’s performance for CBRS 5G bands

create MOP for RF Engineer to calculate the KPI for the call quality and capacity

Calculate radio power for High-band Low-Band & Ultra-wide-Band frequency

Organisation

Verizon Wireless

Senior RF Design Engineer

Achievements and Responsibilities

calculate the RF KPI for the call quality and capacity

Assist senior RF engineers in conducting link budget analysis

Calculate radio power for High-band Low-Band & Ultra-wide-Band frequency

Complete design plan for low bands such as 700Mhz, 850Mhz and High band such as CBRS, C-Band, PCS, AWS, AWS3 and also mm-Wave 28Ghhz, responsible to pick equipment’s such as antennas and the Radios

Organisation

Sprint

Lead RF Design Engineer

Achievements and Responsibilities

Designing and analysing and optimizing the RF network and parameters, KPIs

Create different antennas with different pattern and gain as test antenna in design tool to run various test cases for different spectrum and different topography

Used live traffic data from true call to troubleshoot for the area with high rate of drop calls and low throughput data.

Responsible to select a suitable antenna for design of different Frequency bands and different morphology.

ACP run, link Budget analysis & create Traffic Map data.

Propagation analysis and RF parameter validation, suggestion for RF parameters to achieve higher performance for the design. 5G Massive Mimo

Organisation

Sirius XM Satellite Radio-

Lead Engineer/Engineering Manager (RF terrestrial Design)

Achievements and Responsibilities

RF terrestrial Engineer of the Sirius-XM Satellite Radio on 2GEO (Satellite) Project

Timing the repeaters reference to core site and satellites signal to terrestrial.

Calibrate the Radios for collection of the Satellite and terrestrial radio signal prior to launch the sites.

Analyse drive test log, find area with low quality signal, propose the final solutions to improve the network and create site report for higher management level.

Locate the mutes (signal losses), analyze the mutes logs based on the locations and durations to find the issue for cause of the mutes and propose the solution and fix the network.

Daily monitor sites report for any trouble tickets or alarm by working with NOC team

Worked closely with construction team and managers to make sure each stage has been completed within the guidelines and sites design are passed without any error such as (using correct cables and jumper size for repeaters with different Antenna power, antenna location, clear line of sky for GPS, cabinet environment and all other equipment)

Organisation

Alcatel-Lucent (AT&T 4G Design& Optimization)

RF System & Architecture Engineer

Achievements and Responsibilities

Developed and plan design for 4G LTE network Washington DC metro area, VA, MD.

Studied the market to come up with feasible solution for best design layout for entire region also selecting the most reliable equipment’s such as Radios, antenna and so on..)

Calculate the link budget for required spectrum and bandwidth

Calculated data to create traffic maps, Created ACP, Monte Carlo simulations, Analysis propagation and calculate KPIs.

Generate and evaluate coverage and interference prediction maps.

Calculate and evaluate the effects on the received signal of path-related impairments.

Support RF team team with different aspects of design regards to any RF parameters setup and Develop and analyse sectors to improve coverage and capacity.

Find area with capacity issue, study the Traffic data and provide the solution with technical proposal.

Calculate the efficiency of various multiple-antenna schemes, analyse the trade-offs involved in selecting from among them.

Organisation

AT&T

RF Design Engineer, DAS Project

Achievements and Responsibilities

Design Capacity and coverage (3G and 4G) for South Texas Markets.

Design and planed venues for iDAS, oDAS on UMTS and LTE network.

Overview of Events and Venue Analyses. Data intensity and market share for different Venue such as: Sport, concert, hospital, office, hotels and convention.

Organisation

Alcatel- Lucent-

RF Optimization Engineer

Achievements and Responsibilities

Post process and analysis drive test data to optimize LTE sites

Monitor and Improve KPIs – Retainability, Accessibility, Throughput, IRAT, Inter/Intra eNB HOs.

Reduced, eliminated Pilot pollution area, Troubleshoot areas with poor RF performance.

Site verification, Prepare and present close out reports

Configure network components, analyse LTE network KPI’s

CS Fall Back and CS Retainability KPI analysis using UE and MME traces.

Neighbor list analysis, adding or removing neighbors’ reference to any overshooting or interface

Organisation

ZTE U.S.A

Program Manager/ Development Manager

Achievements and Responsibilities

Established working relationship with Business Unit (BU) leadership and managed agreed detailed business implementation schedules and enablement plans.

Responsible to complete the milestone over 270 test cases, worked closely with Motorola and Samsung team to insure the completion of all the test cases (over the Air and in IOT lab)

Organized cross-functional teams, prioritized resources, and managed projects to completion in matrix environment with responsibility for several simultaneous projects.

Managed critical events and issues to resolution. Provided high-level overviews, process and system flows, and technical brief presentations to customers’ Senior Management,

Projects included: WiMax device test (USB Dongle) through iIOTlab and ND lab

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