James Edwin Vian

Title: Innovations of James Edwin Vian

Introduction

James Edwin Vian is a notable inventor based in Westford, MA (US). He has made significant contributions to the field of technology, particularly in the area of signal processing. With a total of 4 patents to his name, Vian's work has had a considerable impact on various applications.

Latest Patents

One of Vian's latest patents is titled "Methods and apparatus for array-based compressed sensing." This invention involves an array-based Compressed Sensing Receiver Architecture (ACRA) that utilizes an antenna array with multiple antennas connected to several ADCs. These ADCs are clocked at different sampling rates below the Nyquist rate of the incident signals. By comparing the individual aliased outputs of the ADCs, it is possible to estimate signal component characteristics, including bandwidth, center frequency, and direction-of-arrival (DoA). Various digital signal processing techniques, such as sparse fast Fourier transform (sFFT), can be employed based on the type of detection or estimation required.

Another significant patent by Vian is "Method and apparatus for complex in-phase/quadrature polyphase nonlinear equalization." This invention focuses on complex polyphase nonlinear equalizers (cpNLEQs) that mitigate nonlinear distortions produced by complex in-phase/quadrature (I/Q) time-interleaved analog-to-digital converters (TIADCs). The cpNLEQs upsample the digital waveform emitted by the TIADC and separate it into upsampled in-phase and quadrature components. The processors in the cpNLEQs create real and imaginary nonlinear compensation terms from these components, which are then used to produce an equalized digital waveform suitable for further processing.

Career Highlights

James Edwin Vian is affiliated with the Massachusetts Institute of Technology, where he continues to contribute to advancements in technology and innovation. His work has been recognized for its technical depth and practical applications in the field.

Collaborations

Vian has collaborated with notable individuals such as Joel Irwin Goodman and Benjamin A Miller, further enhancing the impact of his inventions through teamwork and shared expertise.

Conclusion

James Edwin Vian's contributions to technology through his patents and collaborations highlight his role as an influential inventor. His work continues to shape advancements in signal processing and related fields.