Visali Mushunuri
Nallagandla
Summary
Highly-motivated employee with desire to take on new challenges. Strong work ethic, excellent technical and problem solving skills. Adept at working effectively, unsupervised, and quickly mastering new skills.
Overview
11
11
years of professional experience
Work History
Senior Systems Engineer
Constelli Signals
Hyderabad
03.2024 - Current
- Served as Technical Lead for development of device replacement software development in Python, implementing TCP/IP communication, and ICD-based data structures for seamless system integration.
- Designed and Developed Best Data Selector algorithms in MATLAB for PCM and analog telemetry streams; authored the Preliminary Design Document (PDD) for the Best Source Selector.
- Developed Test Plan and Test cases document for testing BDS and developed automation framework in MATLAB.
- Implemented Python modules to convert recorded telemetry data into IRIG Chapter 10 format structures.
R&D Engineer
Nordic Semiconductor
Hyderabad
08.2018 - 11.2023
- Verification of Coex Hardware (Wi-Fi and BLE): Verified Packet Traffic Arbitrator (PTA) module logic design for sharing medium between BLE and Wi-Fi. Verification of its functionality post integration with PHY. Involved in Pre-silicon phase Coex hardware testing using PYTHON scripts.
- Implemented and tested Coexistence manager and driver modules in embedded C that helps to handle requests in LMAC and host level and assign priority windows to handle traffic in more efficient way.
- Tested PTA logic on Nordic nRF7002 board integrated with Wi-Fi module for different Wi-Fi and BLE roles. Validated its throughput performance using two RF box setup, where nRF7002(Wi-Fi+BLE) and nRF5340 (BLE) are connected using wired setup and placed in two separate RF boxes and are operated for different Wi-Fi and BLE SNR values.
- Test Plan development and testing of PER (packet error rate) for minimum required SNR for 802.11b/n/ac/ax standards on simulator.
- Read RX vector from memory in embedded C and parsing it using python scripts for 802.11b/n/ac/ax standards. Verified CFO estimation and compensation values for different packets of 802.11n.
- Testing and validation of Clear Channel Assessment (CCA) duration for 802.11b/n/ac/ax packets (both successful and failed) on emulator. Verified CCA duration for unsupported frames and two combined packet cases.
- Tested Jammer module and 802.11ax 20 in 40MHz cases on simulator and emulator.
- Designing Fine Time Measurement (FTM) verification algorithm for t1, t2, t3 and t4 using Rx Vector output and timers available.
Baseband Engineer
Innovation Communication Systems
Hyderabad
09.2017 - 08.2018
- Tested 802.11g(Wi-Fi) OFDM TX and RX paths in MATLAB. Tested individual modules like Scrambler/descrambler, Interleaver/Deinterleaver, Convolution Encoder, Mapper, FFT/IFFT, Channel Estimation in MATLAB.
- Developed test bench in Verilog and tested TX path in Verilog. Integrated MAC and PHY layers in Verilog.
- Supported hardware team in implementing 802.11g OFDM in RTL. Explaining concepts to juniors in RTL team.
Developer
TCS Innovation Labs
Bengaluru
07.2015 - 08.2017
- Worked on LTE - LAA for designing listen before Talk mechanism similar to WiFi 802.11 for co-existing with other WiFi networks.
- Presented a paper on Listen Before Talk technique in LTE-LAA (Licensed Assisted Access), "Fair and Efficient Listen Before Talk (LBT) Technique for LTE Licensed Assisted Access (LAA) Networks", 31st IEEE International Conference on Advanced Information Networking and Applications (AINA-2017) in Taiwan, March 27- 29, 2017
- Porting MultiPath TCP (MPTCP) and testing and comparing its throughput performance with different variants of TCP in resource constrained devices (Rpi boards)
- Worked on Robotic Operating Systems for Optimal allocation of resources for resource constrained robotic nodes in IoT environment. Implementation is based on ROS service client for requesting resources from a Fog Node. Implemented and Tested with RPi boards
Education
Artificial Intelligence And Machine Learning
Great Lakes Institute
Online01-2024
Some College (No Degree) - Python For 5G MU, Massive MIMO And MmWave MIMO
IIT Kanpur
OnlineMaster's - Advanced Communication Systems
NIT Warangal
05.2015
Bachelor's - BE
Anil Neerukonda Institute of Technology And Scienc
Visakhapatnam04.2013
High school or equivalent - MPC
Sasi Junior College
04.2009
Skills
- Python
- C, C
- Shell Scripting
- Embedded C
- Verilog basics
- MATLAB
- Linux
- STK Level 1 Certification
Languages
Telugu
First Language
English
Advanced (C1)
C1
Accomplishments
- Stood first in M.Tech. 1st semester with an SGPA of 8.4
- Got an All India Gate rank of 1060 in 2013
Timeline
Senior Systems Engineer
Constelli Signals
03.2024 - Current
R&D Engineer
Nordic Semiconductor
08.2018 - 11.2023
Baseband Engineer
Innovation Communication Systems
09.2017 - 08.2018
Developer
TCS Innovation Labs
07.2015 - 08.2017
Some College (No Degree) - Python For 5G MU, Massive MIMO And MmWave MIMO
IIT Kanpur
Master's - Advanced Communication Systems
NIT Warangal
Bachelor's - BE
Anil Neerukonda Institute of Technology And Scienc
High school or equivalent - MPC
Sasi Junior College
Artificial Intelligence And Machine Learning
Great Lakes Institute