Michael J Mccloud

US Patent:

8005128, Aug 23, 2011

Filed:

Aug 17, 2007

Appl. No.:

11/893707

Inventors:

Gagandeep Singh Lamba - Woodinville WA, US
Tommy Guess - Lafayette CO, US
Michael McCloud - San Diego CA, US
Anand P Narayan - Boulder CO, US

Assignee:

Rambus Inc. - Sunnyvale CA

International Classification:

H04B 1/00

US Classification:

375144, 375130

Abstract:

A receiver in a CDMA system comprises a front end processor that generates a combined signal per source. A symbol estimator processes the combined signal to produce symbol estimates. An S-Matrix Generation module refines these symbol estimates based on the subchannel symbol estimates. An interference canceller is configured for cancelling interference from at least one of the plurality of received signals for producing at least one interference-cancelled signal.

US Patent:

8155254, Apr 10, 2012

Filed:

Dec 18, 2008

Appl. No.:

12/337632

Inventors:

Junqiang Li - Sunnyvale CA, US
Je Woo Kim - Cupertino CA, US
Matthias Brehler - Boulder CO, US
Michael McCloud - San Diego CA, US

Assignee:

Qualcomm Incorporated - San Diego CA

International Classification:

H03D 1/04

US Classification:

375346, 375260

Abstract:

Techniques for the adjustment of a position of Fast Fourier Transform (FFT) window are provided. The adjustment may be based on the condition that the length of channel impulse response is larger than the length of cyclic prefix. The technique may determine a position of the FFT window that attempts to maximize carrier-to-noise (C/N) ratio value measured at the receiver.

US Patent:

8284875, Oct 9, 2012

Filed:

Jan 15, 2010

Appl. No.:

12/688760

Inventors:

Jong Hyeon Park - San Jose CA, US
Michael L. McCloud - San Diego CA, US
Brian C. Banister - San Diego CA, US

Assignee:

Qualcomm Incorporated - San Diego CA

International Classification:

H04L 27/06

US Classification:

375341, 375260, 375267, 375340, 375344, 375345, 375347, 455 75, 455101, 455119, 455132, 4551731, 4551821, 4551822, 4551921, 4551922, 4552321, 4552341, 455296, 455500, 4555621, 370334, 341173, 714794, 714795, 714796

Abstract:

Certain embodiments of the present disclosure provide a method for frequency-domain gain control in system utilizing orthogonal frequency division multiplexing (OFDM) multiple input multiple output (MIMO). The proposed method reduces the complexity of the system while maximizing the internal accuracy of the OFDM MIMO decoder and preserving the performance of the system.

US Patent:

8331504, Dec 11, 2012

Filed:

May 4, 2009

Appl. No.:

12/435076

Inventors:

Yingqun Yu - San Diego CA, US
Farrokh Abrishamkar - San Diego CA, US
Divaydeep Sikri - Woking, GB
Michael McCloud - San Diego CA, US

Assignee:

Qualcomm Incorporated - San Diego CA

International Classification:

H03D 1/04

US Classification:

375346

Abstract:

Systems and methods for multi-user interference cancellation are provided. In one aspect of the disclosure, an apparatus is provided. The apparatus comprises a processing unit configured to process received chips into received symbols for a plurality of users and a detection unit configured to detect user symbols from the received symbols. The apparatus also comprises an interference cancellation unit configured to compute multi-user interference using the detected user symbols and to remove the computed multi-user interference from the received symbols. The apparatus further comprises a redetection unit configured to redetect user symbols from the received symbols with the computed multi-user interference removed.

US Patent:

8391338, Mar 5, 2013

Filed:

Oct 29, 2010

Appl. No.:

12/916439

Inventors:

Gagandeep Singh Lamba - Woodinville WA, US
Tommy Guess - Lafayette CO, US
Michael McCloud - San Diego CA, US
Anand P. Narayan - Boulder CO, US
Prashant Jain - Longmont CO, US

Assignee:

Rambus Inc. - Sunnyvale CA

International Classification:

H04B 1/00

US Classification:

375148, 375130

Abstract:

A receiver in a CDMA system comprises a front end processor that generates a combined signal per source. A symbol estimator processes the combined signal to produce symbol estimates. An S-Matrix Generation module refines these symbol estimates based on the sub channel symbol estimates. An interference canceller is configured for cancelling interference from at least one of the plurality of received signals for producing at least one interference-cancelled signal.

US Patent:

8416733, Apr 9, 2013

Filed:

Jun 28, 2010

Appl. No.:

12/825146

Inventors:

Shivratna G. Srinivasan - San Diego CA, US
Michael L. McCloud - San Diego CA, US
Remi J. Gurski - San Diego CA, US
Sunil Kumar Kandukuri Narayana - San Diego CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04B 7/212

US Classification:

370324, 370210

Abstract:

Techniques for performing time tracking in a communication system utilizing a cyclic prefix are described. In an aspect, a receiver may detect for large timing errors based on early and late received samples obtained with early and late FFT windows, respectively. The receiver may derive first and second channel impulse response (CIR) estimates based on the early and late received samples, respectively, determine an early channel energy based on the first CIR estimate, determine a late channel energy based on the second CIR estimate, compute an update amount based on the early and late channel energies, and update the FFT window position based on the update amount. In another aspect, the receiver may perform time tracking with an inner time tracking loop (TTL) and an outer TTL. The receiver may update the FFT window position in coarse steps with the outer TTL and in fine steps with the inner TTL.

US Patent:

8457263, Jun 4, 2013

Filed:

Aug 8, 2011

Appl. No.:

13/205320

Inventors:

Gagandeep Singh Lamba - Woodinville WA, US
Tommy Guess - Lafayette CO, US
Michael McCloud - San Diego CA, US
Anand P. Narayan - Boulder CO, US

Assignee:

Rambus Inc. - Sunnyvale CA

International Classification:

H04B 1/00

US Classification:

375346, 375130

Abstract:

A receiver in a CDMA system comprises a front end processor that generates a combined signal per source. A symbol estimator processes the combined signal to produce symbol estimates. An S-Matrix Generation module refines these symbol estimates based on the sub channel symbol estimates. An interference canceller is configured for cancelling interference from at least one of the plurality of received signals for producing at least one interference-cancelled signal.

US Patent:

8503591, Aug 6, 2013

Filed:

Aug 19, 2008

Appl. No.:

12/193995

Inventors:

Divaydeep Sikri - Woking, GB
Farrokh Abrishamkar - San Diego CA, US
Michael McCloud - San Diego CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04B 1/10

US Classification:

375350, 375144, 375148, 375346, 375341, 375262, 375260, 375265

Abstract:

A method for suppressing interference in a wireless communication is provided. The method comprises receiving a burst of symbols, generating a plurality of timing hypotheses for the burst of symbols, and calculating, for each timing hypothesis, a plurality of weights for an interference suppression filter based upon a subset of the burst of symbols. The method further comprises, for each timing hypothesis, filtering the subset of the burst of symbols using the interference suppression filter with the corresponding plurality of weights, and selecting one of the plurality of timing hypotheses corresponding to a selection criteria. The method further comprises equalizing and decoding the filtered burst of symbols based upon the selected one of the plurality of timing hypotheses.

Address:

4747 Niagara Ave, San Diego, CA 92107

VIN:

JH4CU26669C023284

Make:

ACURA

Model:

TSX

Year:

2009