Qualcomm Incorporated

Qualcomm Atheros Inc.

Felix Bitterli

James M Gardner

Kai Shi

Tevfik Yucek

Shahram Abdollahi-Alibeik

Tao-Fei Samuel Ng

Lalitkumar Nathawad

Patrick Kelliher

Richard Mosko

Burcin Baytekin

Suresh Chandrasekaran

Christopher Pisz

Mani Krishnan Venkatachari

A method and apparatus are disclosed for a wireless communication device capable of scanning for radar signals while detecting and/or receiving a wireless communication signal. The wireless communication device may include a plurality of local oscillator synthesizers to allow distinct frequency bands to be used for wireless communication signals and radar detection. In some embodiments, the wireless communication device may include a radar detection physical layer (PHY) circuit to detect the presence of radar signals within a received RF signal. The radar detection PHY may have limited functionality suitable primarily for radar signal analysis and not suitable for processing (decoding) communication signals.

Agile radar detection for wireless communications

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

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San Jose, CA, United States of America

Felix Bitterli