Stefan Hamrin

Title: The Innovations of Stefan Hamrin

Introduction

Stefan Hamrin is a notable inventor based in Åkersberga, Sweden. He has made significant contributions to the field of wireless communication and signal processing. With a total of 2 patents, his work reflects a deep understanding of complex technological challenges.

Latest Patents

One of his latest patents is titled "Signaling structure for wireless communication network." This invention discloses a method of operating a radio node in a wireless communication network. The method includes communicating based on a signaling structure that pertains to a time domain interval and comprises a plurality of symbol time intervals. Each symbol time interval is associated with a cyclic prefix interval of a cyclic prefix interval type from a set of at least two types. The first type corresponds to a first number N of processing samples, while the second type corresponds to a second number M of processing samples, where M is larger than N. Both N and M are multiples of a base factor B. The disclosure also pertains to related devices and methods.

Another significant patent is "Digital predistortion of non-linear devices." This invention describes a method and apparatus for compensating for nonlinearities in a non-linear device that manipulates a signal. Shortly before an initial discrete power increase is applied to the device, a first pre-distortion function is generated based on a first set of DPD parameters and applied to the signal. After a predetermined time period following the initial power increase, the first pre-distortion function ceases to be applied, and a second pre-distortion function is generated based on a second set of DPD parameters. This second function is then applied to the signal. Shortly before a subsequent discrete power increase is applied, the first pre-distortion function is again generated and applied.

Career Highlights

Stefan Hamrin is currently employed at Telefonaktiebolaget LM Ericsson (publ), a leading company in telecommunications. His work at Ericsson has allowed him to contribute to advancements in wireless communication technologies.

Collaborations

Throughout his career, Stefan has collaborated with talented individuals such as Spendim Dalipi and Tobias Johansson. These collaborations have further enriched his innovative endeavors.

Conclusion

Stefan Hamrin's contributions to the field of wireless communication and signal processing are noteworthy. His patents demonstrate a commitment to advancing technology and addressing complex challenges in the industry.