Delay calibration algorithm design and implementation for envelope tracking (ET) power amplifier (PA)
1. Key contributor to build the ADS Ptolemy simulator for ET-PA.
2. Key contributor to migrate the algorithms into mass production.
Fast IQ imbalance calibration algorithm design and implementation
1. Propose and implement the joint transmitter and receiver IQ imbalance calibration algorithm for LTE FDD system based on the internal transmit loopback architecture.
2. Build the algorithm into the real product.
3. Submitted a patent based on the work.
Fast IIP2 factory calibration based on two tone testing
1. Propose and implement a fast search (search IIP2 calibration DAC code) algorithm for IIP2 factory calibration based on the internal loopback architecture.
2. Build the algorithm into the real product.
3. Published a patent by Samsung as a first author.
4. Employee of the month award because of the production support based on this algorithm.
IIP2 calibration based on adaptive signal processing algorithm
1. Propose and implement an adaptive IIP2 calibration DAC code searching algorithm based on the real-time LTE signals. IQ branch dependency information has also been considered to accelerate the searching speed.
2. Build the algorithm into the product as a candidate algorithm.
3. Published a patent by Samsung as a first author.
