DR. MARK S WALLACE, MD
Osteopathic Medicine at Arbor Dr, San Diego, CA

8472306, Jun 25, 2013

Jun 10, 2010

12/813461

J. Rodney Walton - San Diego CA, US
John W. Ketchum - San Diego CA, US
Steven J. Howard - San Diego CA, US
Mark Wallace - San Diego CA, US

QUALCOMM Incorporated - San Diego CA

H04J 11/00, H04B 7/216

370208, 370335, 370342

In one aspect of a multiple-access OFDM-CDMA system, the data spreading is performed in the frequency domain by spreading each data stream with a respective spreading code selected from a set of available spreading codes. To support multiple access, system resources may be allocated and de-allocated to users (e. g. , spreading codes may be assigned to users as needed, and transmit power may be allocated to users). Variable rate data for each user may be supported via a combination of spreading adjustment and transmit power scaling. Interference control techniques are also provided to improve system performance via power control of the downlink and/or uplink transmissions to achieve the desired level of performance while minimizing interference. A pilot may be transmitted by each transmitter unit to assist the receiver units perform acquisition, timing synchronization, carrier recovery, handoff, channel estimation, coherent data demodulation, and so on.

2010016, Jul 1, 2010

Mar 9, 2010

12/720017

Steven J. Howard - San Diego CA, US
John W. Ketchum - San Diego CA, US
Mark S. Wallace - San Diego CA, US
Jay Rodney Walton - San Diego CA, US

QUALCOMM INCORPORATED - San Diego CA

G06F 17/16, G06F 7/487

708204, 708235, 708504

For eigenvalue decomposition, a first set of at least one variable is derived based on a first matrix being decomposed and using Coordinate Rotational Digital Computer (CORDIC) computation. A second set of at least one variable is derived based on the first matrix and using a look-up table. A second matrix of eigenvectors of the first matrix is then derived based on the first and second variable sets. To derive the first variable set, CORDIC computation is performed on an element of the first matrix to determine the magnitude and phase of this element, and CORDIC computation is performed on the phase to determine the sine and cosine of this element. To derive the second variable set, intermediate quantities are derived based on the first matrix and used to access the look-up table.

8489107, Jul 16, 2013

Feb 18, 2011

13/030183

J. Rodney Walton - San Diego CA, US
Mark S. Wallace - San Diego CA, US
Steven J. Howard - San Diego CA, US

QUALCOMM Incorporated - San Diego CA

H04Q 7/20

4554522, 4555621

Techniques to schedule downlink data transmission to a number of terminals in a wireless communication system. In one method, one or more sets of terminals are formed for possible data transmission, with each set including a unique combination of one or more terminals and corresponding to a hypothesis to be evaluated. One or more sub-hypotheses may further be formed for each hypothesis, with each sub-hypothesis corresponding to specific assignments of a number of transmit antennas to the one or more terminals in the hypothesis. The performance of each sub-hypothesis is then evaluated, and one of the evaluated sub-hypotheses is selected based on their performance. The terminal(s) in the selected sub-hypothesis are then scheduled for data transmission, and data is thereafter coded, modulated, and transmitted to each scheduled terminal from one or more transmit antennas assigned to the terminal.

8160183, Apr 17, 2012

May 4, 2010

12/773722

John W. Ketchum - San Diego CA, US
Mark S. Wallace - San Diego CA, US
J. Rodney Walton - San Diego CA, US
Steven J. Howard - San Diego CA, US

QUALCOMM Incorporated - San Diego CA

H04L 23/02, H03H 7/30, H04N 7/12, H04J 3/00, H04J 1/00

375341, 375229, 375265, 375262, 370480, 370497, 370498, 370529

For eigenmode transmission with minimum mean square error (MMSE) receiver spatial processing, a transmitter performs spatial processing on NS data symbol streams with steering vectors to transmit the streams on NS spatial channels of a MIMO channel. The steering vectors are estimates of transmitter steering vectors required to orthogonalize the spatial channels. A receiver derives a spatial filter based on an MMSE criterion and with an estimate of the MIMO channel response and the steering vectors. The receiver (1) obtains NR received symbol streams from NR receive antennas, (2) performs spatial processing on the received symbol streams with the spatial filter to obtain NS filtered symbol streams, (3) performs signal scaling on the filtered symbol streams with a scaling matrix to obtain NS recovered symbol streams, and (4) processes the NS recovered symbol streams to obtain NS decoded data streams for the NS data streams sent by the transmitter.

8194563, Jun 5, 2012

Apr 26, 2010

12/767648

J. Rodney Walton - San Diego CA, US
Mark S. Wallace - San Diego CA, US

Qualcomm Incorporated - San Diego CA

H04B 7/00

370252, 370310, 370468

In a MIMO system, rate control is achieved with an inner loop that selects rates for data streams sent via a MIMO channel and an outer loop that regulates the operation of the inner loop. For the inner loop, SNR estimates are obtained for each data stream based on received pilot symbols and/or received data symbols. An effective SNR is derived for each data stream based on the SNR estimates, a diversity order, a MIMO backoff factor, and an outer loop backoff factor for the data stream. The rates are then selected for the data streams based on the effective SNRs for the data streams. The outer loop adjusts the outer loop backoff factor for each data stream based on the performance (e. g. , packet errors and/or decoder metrics) for the data stream.

8416725, Apr 9, 2013

Feb 9, 2010

12/703144

Rashid Attar - San Diego CA, US
Mark Wallace - San Diego CA, US
Qiang Wu - San Diego CA, US
Jun Ma - San Diego CA, US

Qualcomm Incorporated - San Diego CA

G08C 17/00

370311

An apparatus and method for transmit power savings comprising determining a rate of a previous frame; determining if a current frame is an ALWAYS-ON frame, wherein the current frame temporally succeeds the previous frame; and either ignoring every other reverse link power control (RLPC) bits received on a forward power control subchannel (F-PCSCH) or applying every RLPC bits received on the F-PCSCH. In one aspect, the apparatus and method for transmit power savings comprising using a rate determination algorithm (RDA) to determine a rate of a previous frame; detecting a pilot gating pattern at the end of the previous frame; comparing the rate of the previous frame to a threshold; determining if a current frame is an ALWAYS-ON frame; and declaring the current frame to be a 0 bps frame and puncturing the F-PCSCH to a predetermined frequency.