Resume - Radio Network Engineer :: WiMAX Technologies

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Resume Title:

Radio Network Engineer

Contact Information

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Work Experience

Experience level:

5-10 years

Profile/Cover Letter:

HIGHLIGHTS OF QUALIFICATIONS

• Over 9 years experience in broadband mobile wireless (BMW) telecommunications
• Expertise in RF network design, planning and optimization
• Excellent knowledge in channel propagation models: indoor, outdoor, LOS, NLOS, SISO and MIMO
• Proficient in the use of network engineering tools: A9155, NPO; driving test tools: COUEI X-CAL/X-CAP and protocol analyzer: K18, Ethereal
• Familiar with the use of lab test equipment: oscilloscopes, signal generators, logic analyzers, vector signal analyzers and wireless channel emulators
• Excellent knowledge in WCDMA and WiMAX standards, especially on PHY and MAC layers
• Proficient in the use of simulation tools: MATLAB, SPW and COSSAP
• Excellent knowledge in all IP radio access network (RAN) architecture
• Able to take the initiative, hard-working, a professional team player, ability to quickly master new technology and cooperative
• Doctoral degree in electrical engineering

SKILLS AND EXPERIENCE

Radio Network Engineering

• Built up the first commercial fixed WiMAX for China Mobile through Alcatel-Lucent in China
• Developed radio network deployment guidelines and technical documentation for customers and outsource partners, including deployment management methodology, RF network deployment guidelines, site selection, design guidelines and network optimization guidelines
• Accomplished two network field trials for mobile WiMAX in China, one in Shanghai city for internal test platform and the other in Tianjing city for China Mobile
• Oversaw evaluation and optimization of radio networks
• Built up tool chain for RF network engineering, which included RF network design and planning tools, drive test tools, network protocol analyzers and application servers
• Performed network planning, coverage prediction and performance evaluation by using A9155
• Performed driving test and network optimization by using COUEI’s X-CAL/X-CAP, Ethereal and Tektronix K18
• Defined radio indicators and counters to be implemented in Alcatel-Lucent WiMAX NPO (network performance optimizer)
• Supported presales departments on telecom KPIs for WiMAX technology

E2E Solution and Customer Service

• Provided and promoted WiMAX E2E solutions to China operators: China Mobile, Netcom and Telecom
• Held regular meetings with China Mobile research center and issued technical reports such as feasibility study report on mobile WiMAX for CMCC to boost WiMAX E2E solutions
• Prepared test specifications such as fixed/mobile WiMAX equipment specifications and lab and field test specifications for China Mobile to test and assess fixed/mobile WiMAX in lab and field trial networks

• Prepared WiMAX RFI/RFP responses to operator customers
• Established and maintained excellent customer relationships by providing regular follow-up and support

System and Algorithm Design

• Designed L1/L2 system architecture for pre-WiMAX systems, including radio frame structure, physical channel design, multiple access technologies, random access technologies, power control, radio resource allocation, DL/UL transmitter and receiver and RF interfaces
• Designed digital baseband algorithms for OFDMA systems, including digital AGC, band-pass filter, timing synchronizer, OFDM symbol detection, frequency synchronizer, FFT and IFFT, channel equalizer, PAPR reduction and FEC Codec
• Implemented link level and system level simulation using fixed-point, evaluated system capacity and transmitting performance
• Researched some of the latest technologies used in WiMAX and 3GPP LTE, including MIMO and AAS technologies, inter-cell interference mitigation technologies and frequency-selective scheduling, evaluated the performance in simulations

Training

• Educated and trained up to 100 new staff engineers on fundamental theories of wireless communication networks
• Educated and trained up to 50 staff engineers on fundamental theories of OFDM/OFDMA technologies
• Educated and trained up to 10 RF engineers on mobile WiMAX network optimization and radio algorithms
• Trained RF engineers on mobile WiMAX network optimization in field trial networks


Recent Employer:	Alcatel-Lucent
Job Title:	Senior System Engineer
Start Month/Year:	08/2005
End Month/Year:	09/2007
City:	Shanghai
Country:	China
Description:	Senior System Engineer – Alcatel-Lucent Shanghai Bell Co., Ltd. 2005 - 2007 ‧ Responsible for WiMAX system architecture and End-to-End Solutions, and network engineering, and accomplished two Mobile WiMAX trial networks and many Fix WiMAX commercial networks for telecom operators in China ‧ Responsible for WiMAX field trial and radio network engineering, including network design, planning and optimization.  CMCC Fix WiMAX (802.16d) field trial and network engineering in Chongqing City.  CMCC Mobile WiMAX (802.16e) field trial and network engineering in Shanghai City  Participating in WiMAX network engineering on-job training in Alcatel-Lucent France ‧ Responsible for technology development, performance evaluation and product strategies on WiMAX and 3GPP LTE technologies.  MIMO and AAS technologies used in WiMAX and LTE.  Inter-cell Interference Mitigation technologies for OFDMA systems.  Frequency selective Scheduling for 3GPP LTE ‧ As the leading representative of the company, I participated in many international and national standard groups and forums, such as 3GPP, CCSA and FuTURE FORUM, and leveraged the research achievements in the standard groups.

Recent Employer:	Han Wang Technologies, Inc.
Job Title:	System Architecture
Start Month/Year:	10/2002
End Month/Year:	08/2005
City:	Wuhan
Country:	China
Description:	‧ Successfully accomplished one China national 863 project, Future Technology for Universal Radio Environment (FuTURE) for next generation mobile communication systems. Main achievements include.  Designed the air-interface framework based on TD-OFDM (Time Division and Orthogonal Frequency Division Multiplexing), including time slots, frequency sub-carrier division, frame structure, physical channels and spreading methods.  Designed the receiving algorithm for downlink and uplink receiver, including digital AGC, band-pass filter, timing synchronizer, frequency synchronizer, channel equalizer and channel decoder.  Completed the algorithm simulation and FPGA implementation of the transmitter and receiver of the prototype. ‧ Developed AirMasterTM – Wireless Broadband Internet Access System based on UTRA TD-CDMA Technologies, and took the responsibilities of system architecture design and product management. ‧ Developed PW200, WCDMA/PHS Dual Mode 3G Handset, for UTStarcom Telecom Company. I am responsible for the system design of 3G mobile handset including system requirement specification (SRS), software and hardware architecture. The handset has been produced in high volume and debuted on market in 2005 Q3.

Recent Employer:	Han Wang Technologies, Inc.
Job Title:	Algorithm and System Designer
Start Month/Year:	05/2002
End Month/Year:	10/1999
City:	Wuhan
Country:	China
Description:	‧ Built up a test-bed of Broadband Mobile Wireless IP Network, PDMA (Packet Division Multiple Access), at Huazhong University of Science and Technology in China.  Designed the system architecture, base-band algorithms and performed the system simulation and evaluation.  Implemented the prototype of PDMA products.  Built up a trial network with two base stations and four terminals at Huazhong University of Science and Technology in China.

Recent Employer:	Shanghai Bell Company Ltd
Job Title:	Algorithm Engineer
Start Month/Year:	07/1998
End Month/Year:	09/1999
City:	Shanghai
Country:	China
Description:	‧ Performed some standard work and algorithm researching in 3G systems, such as PN scrambling, OVSF code spreading, Rake receiver, Viterbi decoder, power control, and hard/soft/softer handover.

Education & Training


Education Level:	PhD
School Name:	Huazhong University of Science and Technology
Major:	Electronics Engineering
City:	Wuhan
Country:	China
Graduation Date:	21/10/2002
Description:	Not Specified

Education Level:	Master's Degree
School Name:	Wuhan University
Major:	Electronics Engineering
City:	Wuhan
Country:	China
Graduation Date:	21/07/1998
Description:	Not Specified

Education Level:	Bachelor's Degree
School Name:	Wuhan University
Major:	Electronics Engineering
City:	Wuhan
Country:	China
Graduation Date:	21/07/1995
Description:	Not Specified