Qualcomm Incorporated

Atheros Communications, Inc.

Qualcomm Atheros Inc.

Richard Mosko

Ning Zhang

Kai Shi

Tevfik Yucek

Tao-Fei Samuel Ng

Meriam Khufu Ragheb Rezk

Felix Bitterli

Adrian Harold Chadd

This disclosure includes systems and methods for detecting radar signals by performing an initial spectral analysis to identify candidate radar signals and subsequently determining whether any candidate radar signals are false detections using a secondary analysis.

Systems and methods for detecting radar signals

This disclosure is directed to wireless or wired multiple-input multiple-output communication systems, in which a transmit symbol vector and a set of soft decision metrics are estimated using a reduced complexity maximum likelihood (ML) detection method based on a receive symbol vector and a QR decomposition of a set of permuted channel matrices. The QR decomposition can be performed by a series of CORDIC operations. Preferably, the modified receive vector and upper triangular matrix streams are scaled by a weighting vector to help compensate for transmit and receive side noise. Also preferably, the soft decision metric set related to the reliability of transmitted bits is normalized.

System and method for providing reduced complexity maximum likelihood MIMO detection

A method and apparatus for detecting radar signals in single and multiple (extension) channel wireless network frequencies uses spectral and DC analysis. Spectral images produced through a Fast Fourier transform may be captured and analyzed to determine if any radar signals may be present within the selected wireless network frequencies. A plurality of spectral images may also be analyzed to determine if frequency shifting radar signals are present as well. DC analysis of the power contained at the wireless carrier frequencies may detect radar signals that may be centered near those frequencies.

Radar detection for wireless communication devices

Growing community of inventors

Santa Clara, CA, United States of America

Richard Mosko